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Pentium 4 631 Overclocked to 8 GHz

ScuttleMonkey posted more than 6 years ago | from the smokin dept.

Hardware 271

Andreas writes "There are always those who are willing to take things one step further than others. A group of guys known as OC Team Italy is one of them. They recently pushed an Intel Pentium 4 631 to over 8000MHz using an ASUS P5B with modified voltage regulation and liquid nitrogen. Overclocking is cool and all, but this extends beyond what some would perhaps call useful. Still a milestone though."

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Sheesh... (4, Funny)

creimer (824291) | more than 6 years ago | (#17716238)

All the trouble those Italians do to cook sausage without burning it.

Re:Sheesh... (1, Funny)

644bd346996 (1012333) | more than 6 years ago | (#17716530)

I think the whole cooking aspect of P4s is way under-explored. Sure, everybody knows you can cook an egg with one, but has anybody used one to heat a wok, for example? Silicon stir fry! On a more realistic note, those processors could be great for sous-vide [wikipedia.org] cooking if they are water cooled.

Re:Sheesh... (2, Funny)

Anonymous Coward | more than 6 years ago | (#17717250)

I've always had a strange desire to see someone freebase off a P4...

Re:Sheesh... (1)

creimer (824291) | more than 6 years ago | (#17717354)

People been doing that since the original Pentiums. That paste underneath the CPU fan isn't what you think it is.

I just farted (-1, Offtopic)

Anonymous Coward | more than 6 years ago | (#17716240)

I just shit my pants, actually.

Re:I just farted (1, Offtopic)

heauxmeaux (869966) | more than 6 years ago | (#17716302)

Ahhhh, the old follow-through. A classic, to be sure.

direct link to photos of setup (5, Informative)

Bananatree3 (872975) | more than 6 years ago | (#17716244)

To save thoughs who just want to see the setup pictures [xtremesystems.org]

photo mirror (5, Informative)

Bananatree3 (872975) | more than 6 years ago | (#17716376)

setup1 [imageshack.us]

setup2 [imageshack.us]

Thermometer at -192 deg.C [imageshack.us]

photo of screen at 8000.7MHz [imageshack.us]

CPU-Z verified [imageshack.us]

Why no benchmarks? (1)

XO (250276) | more than 6 years ago | (#17716942)

Why are there no useful benchmarks? Danger of cooling system dying off?

Re:Why no benchmarks? (4, Funny)

gad_zuki! (70830) | more than 7 years ago | (#17717402)

Because a P4 at 8ghz benches close to an athlon at 2.

Re:direct link to photos of setup (4, Funny)

ArcherB (796902) | more than 6 years ago | (#17716392)

All that smoke in a couple of those pictures... Was that from the nitrogen or that pack of Camels sitting there?

"Smoking kills" (-1, Offtopic)

omnirealm (244599) | more than 6 years ago | (#17717236)

The packet of cigarettes in this image:

http://www.pctuner.info/test/results/2007012219014 4_setup.jpg [pctuner.info]

Contains the phrase (in Italian), ``Il fumo uccide.'' Translated into English, that reads, ``Smoking kills.'' Can you imagine something that bold and straightforward being printed on a carton sold in the U.S.? I think this illustrates the level of influence that the tabacco industry has in American politics, in comparison to other countries.

Re:"Smoking kills" (1, Offtopic)

shaitand (626655) | more than 6 years ago | (#17717358)

I don't think there is anyone over the age of 5 in the United States who isn't aware of the negative health problems related to smoking. Perhaps there was an issue once long ago with people not being aware of the dangers (like the 50's?) but in modern times there is more false information and overblown statistics in the anti-smoking campaign.

Re:"Smoking kills" (0, Funny)

Anonymous Coward | more than 6 years ago | (#17717390)

I always thought that it was cool to have those texts in the smoke packs. We also have "smoking cauces lung cancer" here in Finland. I was secretly hoping the next patch of punchlines would include "with these you do ugly and horrible death" and "these are the nails in your coffin". Also Alcohol definately needs its own warning labels. Imagine a Carlsberg with a text "no free buddies at AA".

Re:direct link to photos of setup (3, Funny)

oraclese (1039520) | more than 6 years ago | (#17716490)

If I was cooling a CPU with a shoddy setup like that and using a coolant that could freeze and shatter my skin, I'd probably be a bit nervous, too (see ash tray on right hand side of first pic).

spelling (0)

Anonymous Coward | more than 6 years ago | (#17716492)

thoughs
I know spelling isn't a big deal on slashdot, but come on, that has got to be the worst misused variant of "though" I've ever seen!

or, (0)

Anonymous Coward | more than 6 years ago | (#17716572)

just a spelling varient on "those" :p

Too easy! (-1, Offtopic)

Anonymous Coward | more than 6 years ago | (#17716248)

Let's see who can hold out the longest without making a Beowulf cluster joke.

Re:Too easy! (1)

BurningPi (1032288) | more than 7 years ago | (#17717418)

Aw, crud. I can't resist now.

Imagine how hot a Beowulf cluster of those could get!

And why are they running W95? Don't they know that it'll BSOD Much faster?

HEIL HITLER (0, Insightful)

Anonymous Coward | more than 6 years ago | (#17716258)

Heil....HeilHitlerHe.. #In Memory of Adolf Hitler# ..Heil....HeilHitlerHe
Heil....ilHitlerHeil.... We will always remember ....Heil....ilHitlerHeil
Heil....Heil............. and cherish you. Your .....Heil....Heil........
Heil....Heil............. acts of selflessness ......Heil....Heil........
Heil....Heil........... will be passed down from ....Heil....Heil........
HeilHitlerHeilHitler... generation to generation. ...HeilHitlerHeilHitler
HeilHitlerHeilHitler... The lies that dishonor your .HeilHitlerHeilHitler
........Heil....Heil..... name will be vanquished. ..........Heil....Heil
........Heil....Heil.... You were a true patriot ............Heil....Heil
........Heil....Heil.... and a lover of all men, ............Heil....Heil
HeilHitlerHe....Heil... all races, all religions. ...HeilHitlerHe....Heil
ilHitlerHeil....Heil.. #In Memory of Adolf Hitler# ..ilHitlerHeil....Heil

Re:HEIL HITLER (2, Funny)

RyuuzakiTetsuya (195424) | more than 6 years ago | (#17716850)

Spring time for hitler and germany!

Deustchland is happy and gaaaaaaay!

Just in Time! (5, Funny)

LiquidCoooled (634315) | more than 6 years ago | (#17716262)

Thats just in time!

Vista is released in a couple of days, we need at least one machine up to spec.

Re:Just in Time! (0, Informative)

Anonymous Coward | more than 6 years ago | (#17716358)

I'm running Vista on my 1.8 GHz dual core AMD Turion 64 Acer Ferrari 1000 with 1.75 GB of RAM and a 256 MB ATI Radeon right now. Vista and Office 2007 are very responsive and the UI is very good.

Re:Just in Time! (5, Funny)

Anonymous Coward | more than 6 years ago | (#17716482)

*sigh* You and your facts. What do you think this is, Digg?

Re:Just in Time! (3, Funny)

LiquidCoooled (634315) | more than 6 years ago | (#17716540)

Digg?
You mean Duck!
That place has comment moderation down to an art!
One person spams, he gets modded down, but them the 400 replies all telling him he is being blocked are left modded up (because users would see it as a slight and have an argument about why they got downmodded and that will get upmodded and eventually you get to the next actual reply of something and some other fucker jumps in the way and it all starts again.

Thank you, Mr. Gates! (1, Funny)

Anonymous Coward | more than 6 years ago | (#17716732)

Your wise and impartial comments are always appreciated!

Re:Just in Time! (4, Funny)

Copid (137416) | more than 6 years ago | (#17717212)

I'm running Vista on my 1.8 GHz dual core AMD Turion 64 Acer Ferrari 1000 with 1.75 GB of RAM and a 256 MB ATI Radeon right now.
What, that old thing?

Re:Just in Time! (3, Funny)

GweeDo (127172) | more than 6 years ago | (#17716464)

Naw, they used the integrated video and lost all Aero Glass features :(

The problem with high clock is not just heat ... (5, Informative)

vlad_petric (94134) | more than 6 years ago | (#17716270)

It's also how fast your circuits can switch, and how fast the signal can travel on the wires. The execution core of a Pentium 4 also happens to be double-pumped (i.e., it performs operations on both edges of the clock signal). Essentially, those ALUs would be switching at 16GHz ... I, personally, take this with a grain of salt.

Re:The problem with high clock is not just heat .. (5, Interesting)

ettlz (639203) | more than 6 years ago | (#17716354)

Indeed. Light travels just under 2 centimetres in the 16 GHz period. The Pentium 4 core is not much smaller than this... it seems like they're pushing their luck on order-of-magnitude estimates alone.

Re:The problem with high clock is not just heat .. (0, Redundant)

suv4x4 (956391) | more than 6 years ago | (#17716618)

Indeed. Light travels just under 2 centimetres in the 16 GHz period. The Pentium 4 core is not much smaller than this... it seems like they're pushing their luck on order-of-magnitude estimates alone.

Actually it travels around 18.7 meters in that 16GHz period. It'd travel just under 2 cm for a 16 THz chip.
You're making light way too slow. If it were THAT slow, then even 100 MHz chips would be impossible.

So: yea, sorry to break it for you, but a 16 THz chip maybe will never be possible (unless it's super tiny, I guess...).

Re:The problem with high clock is not just heat .. (1)

Kufat (563166) | more than 6 years ago | (#17716698)

Nope.
16 GHz = 16 billion Hz = 16 billion cycles per second.
((1 second) / 16 billion) * c = 1.87370286 centimeters

One foot per nanosecond is the famous rule of thumb, and 16ghz is 16 cycles per nanosecond. (One nanosecond = one billionth of a second, using US terminology. 10**-9.)

Re:The problem with high clock is not just heat .. (3, Informative)

ettlz (639203) | more than 6 years ago | (#17716708)

f = 16 GHz = 16 × 10^9 1/s gives a period t = 1/f = 0.0625 × 10^(–9) s. Distance x = ct = 3.00 × 10^8 m/s × 0.0625 × 10^(–9) s = 0.019 m. But yes, a THz chip would be seriously up-fucked.

Re:The problem with high clock is not just heat .. (0, Redundant)

FST777 (913657) | more than 6 years ago | (#17716826)

I might be wrong, but for all I know, light has nothing to do with it. We're not talking photon-computing, right?

How fast electrical signals travel through the wires is depending on the material the wires are made of. Light has nothing to do with it. I highly doubt that the conductors used are up to the 16GHz challenge, but they might be at those temperatures.

Re:The problem with high clock is not just heat .. (2, Informative)

Ford Prefect (8777) | more than 6 years ago | (#17716890)

How fast electrical signals travel through the wires is depending on the material the wires are made of. Light has nothing to do with it.

While light itself may not have anything to do with it, the speed of light c most definitely has. It's the upper speed limit for, well, everything. Including propagation of signals.

Re:The problem with high clock is not just heat .. (1)

dagamer34 (1012833) | more than 6 years ago | (#17717016)

Yep, funny stuff happens when you try to move things faster than the speed of light. Gotta start talking about Quantum Mechanics and Einstien's theory of relativity to make sense of it all. :P

Re:The problem with high clock is not just heat .. (1)

FLAGGR (800770) | more than 6 years ago | (#17717172)

Yep, funny stuff happens when you try to move things faster than the speed of light. Gotta start talking about [...] Einstien's theory of relativity

I wouldn't consider "it's impossible" funny stuff. You either get a divide by zero or a divide by an imaginary number.

Re:The problem with high clock is not just heat .. (1)

Talchas (954795) | more than 7 years ago | (#17717398)

Even then it doesn't really make sense most of the time.

Re:The problem with high clock is not just heat .. (0)

FST777 (913657) | more than 6 years ago | (#17717062)

Isn't that the supposed upper speed limit for objects? Electric signals in a wire can go faster than the electrons are moving, or so I think (electrons "hopping" to atoms, as such not travelling the width of the atom, etcetc... might be terribly wrong here). If that is true, electrical signals can in theory travel faster than light.

I once heard of a experiment at CERN (I think) where they managed to push a particle beyond the speed of light in that enviroment, creating a light-wave very much akin to an ultrasonic boom. Don't know the details.

Re:The problem with high clock is not just heat .. (1, Informative)

Anonymous Coward | more than 6 years ago | (#17717114)

> Isn't that the supposed upper speed limit for objects? Electric signals in a wire can go faster than the electrons are moving, or so I think (electrons "hopping" to atoms, as such not travelling the width of the atom, etcetc... might be terribly wrong here). If that is true, electrical signals can in theory travel faster than light.

Despite all this, in theory, electrical signals do not travel faster than light.

> I once heard of a experiment at CERN (I think) where they managed to push a particle beyond the speed of light in that enviroment, creating a light-wave very much akin to an ultrasonic boom. Don't know the details.

Look up cherenkov radiation. The particle in question might have gone faster than c in that medium, but it didn't manage to go faster than the speed of light in vacuum.

Re:The problem with high clock is not just heat .. (0)

Anonymous Coward | more than 6 years ago | (#17717226)

The electron pressure pulse (read:signal travels very close .99 ?? to the speed of light)
The electrons themselves would be lucky to move a single millimeter down a wire every 10 seconds (includes wires in your home power system (DC and AC but in AC they just go back and forth at 50Hz), etc) thats why were using the speed of light here

Re:The problem with high clock is not just heat .. (5, Informative)

Tim C (15259) | more than 6 years ago | (#17717038)

The speed of light in a vacuum (c) is the absolute maximum speed at which information can travel. It doesn't matter how much you cool the chip or what materials you make it out of, given our current understanding of physics* you can't push anything through it faster than 3*10**8 m/s. That gives you an absolute cannot-be-bettered upper limit for the distance that your signal can move in one cycle.

(* which might be wrong, but no-one's managed to prove it wrong yet)

*Light* has nothing to do with it, it's relativity and the *speed* of light in a vacuum that's important.

Re:The problem with high clock is not just heat .. (1)

norton_I (64015) | more than 6 years ago | (#17717274)

Light has everything to do with it. Light is a wave in the elctromagnetic field, changes at which propogate at c in a vacuum. Signals travel down "wires" at somewhat less than c (typically 65-80% * c), dependant on the dielectric constant of the insulator around the wire as well as the geometry of the conductor. In general, the electrons move much slower than this, with instantaneous velocities of a small fraction of c and drift velocities on the order of a few cm/s.

Re:The problem with high clock is not just heat .. (1)

Bromskloss (750445) | more than 6 years ago | (#17717346)

So: yea, sorry to break it for you, but a 16 THz chip maybe will never be possible (unless it's super tiny, I guess...).
Or asynchronous in some way, perhaps.

Re:The problem with high clock is not just heat .. (1)

Jan Brunner (863857) | more than 6 years ago | (#17717022)

I have thought a bit about this before. Actually, electromagnetic waves travel even slower than the speed of light in silicon because the relative permittivity of about 10 limits the speed to around a third of it.

The conclusions I reached are that CPU design has to take this speed into account and that this is probably one of the reasons why big chips need some kind of staged pipeline system.

Re:The problem with high clock is not just heat .. (4, Interesting)

indigest (974861) | more than 6 years ago | (#17716378)

The extreme cooling they are doing is not just for removing the heat generated by the chip. As temperature decreases, the mobility of charge carriers increases, allowing for a faster circuit. In fact, if they were to run a supercooled chip at the nominal clock frequency, they would have hold time violations and the chip would not work. In other words, the data would propagate so quickly that it would corrupt the previous piece of data.

Re:The problem with high clock is not just heat .. (1)

fossa (212602) | more than 6 years ago | (#17716854)

As I understand, semiconductor conductivity is dominated by the number of charge carriers, not by their mobility (as in metals), and the number of charge carriers generally decreases with temperature due to lack of thermal exitation. Does this becomes unimportant when doping is used to control the number of charge carriers? And either way, isn't the speed of transmission fairly constant?

Re:The problem with high clock is not just heat .. (1)

indigest (974861) | more than 7 years ago | (#17717412)

Gate and metal delays will both be important for this processor, but I would guess that the total delay between registers would still be dominated by gate delays (about 70-80%). You are right that drift velocity has a linear correlation with dopant concentration. However, this linearity ends when the doping level is too high or the electric field is too strong; such a situation is called "velocity saturation" and occurs at about 10^7cm/s. Otherwise, you could just increase your doping level (or voltage) and get an infinitely fast transistor!

That was an interesting point you brought up about how charge carriers vary with temperature. As long as the temperature remains above a certain point, there is enough thermal energy for ALL the electrons/holes to leave their parent atoms. I know that for Arsenic this number is -173C but I don't know any others. Liquid nitrogen has a boiling point of about -200C, but I doubt the transistors would actually get so cold that the carriers stop moving completely. Anyhow, if that happened, then we wouldn't be reading this news story on /.

Mobility does decrease with temperature; the explanation that I have been taught is that lattice vibrations prevent the charge carriers from moving freely as the temperature goes up. It is possible that the velocity saturation limit goes up when the chip is so cold, but that is more of a physics issue than an electronics one so I don't know. The intuition could be that the lattice is so stable that higher currents are enabled. Alternatively, it is possible that the circuits do not nominally operate anywhere near velocity saturation and the supercooled regime accomplishes the same effect as increasing the voltage (without fear of breakdown/shoot-through) or increasing the dopant concentration (without a decrease in carrier mobility).

By the way, I forgot to mention that increasing dopant concentration has the side effect of decreasing the carrier mobility. So that is another reason why increasing the doping level beyond a certain point would not give you a faster transistor.

In other words, the speed of transmission is not constant. Hope that answered your question!

I would be happy with just only.... (1, Interesting)

Anonymous Coward | more than 6 years ago | (#17717076)

... a nice stable 4.0 GHz on simple air cooling out of a P4 and also without having to overvoltage it too much. I think that would be just about as much processor horsepower as you could actually utilize in an x86 platform machine for practical general use and gaming too. I have a 3.4GHz P4 (a socket 478 at that) that'll do a good stable 3.8GHz on air cooling with a big copper Thermalright heatsink and a panaflo 92mm fan that doesn't sound too much like a vacuum cleaner running. It does put out an incredible amount of heat however, and I can run it at 4.0GHz on this same air cooling setup but only for very short period of time (maybe 1 to 2 minutes max before it overpowers the heatsink's capacity to dissipate the heat. I'm sure it would be plenty stable if I used water cooling, but that's a hassle and I don't want to risk a leak damaging my machine. Lately I've just been running it at the stock 3.4GHz speed because it just makes too much heat at 3.8 GHz though it does definitely give me a gaming advantage in UT2004 at the higher speeds.

Overclocking is so 2001... (3, Insightful)

Anonymous Coward | more than 6 years ago | (#17716308)

Get with it guys, now it is about making silent fanless but powerful systems....

Not creating a CPU that sucks down 300W+, has one core and generally sucks.

Re:Overclocking is so 2001... (1)

galenoftheshadows (828940) | more than 6 years ago | (#17716414)

My thoughts exactly. Why not just get a few cores, it's probably cheaper than all the liquid N2 they're gonna burn through.

Re:Overclocking is so 2001... (2, Interesting)

Jaktar (975138) | more than 6 years ago | (#17716456)

Silent. Fanless. Oil Filled.

http://www.tomshardware.com/2006/01/09/strip_out_t he_fans/ [tomshardware.com]

I appreciate what these OC'ers are able to accomplish. Though their cooling system is not a viable solution for every day computing, I for one am amazed they've achieved this level of OC.

That's not so fast (0)

Anonymous Coward | more than 6 years ago | (#17716326)

I once clocked a 286 to 30mhz! It caught fire and burned an entire city to the ground.

Re:That's not so fast (1, Funny)

Anonymous Coward | more than 6 years ago | (#17716362)

Damn you! [wikipedia.org]

Hurmph. (2, Insightful)

RyoShin (610051) | more than 6 years ago | (#17716360)

Overclocking is cool and all, but [8Ghz] extends beyond what some would perhaps call useful.
Come back in a decade or two and trying saying that. :)

Re:Hurmph. (4, Funny)

Tumbleweed (3706) | more than 6 years ago | (#17716566)

>> Overclocking is cool and all, but [8Ghz] extends beyond what some would perhaps call useful.

> Come back in a decade or two and trying saying that. :)

Oh, I'm sure noone would ever need more than 8gHz...

Re:Hurmph. (1)

Josh Ovki (1054622) | more than 6 years ago | (#17716970)

Didnt people once say we would never need 512MB of disk space? We are now using terabites and you can get more than 4GB that you can carry in your pocket. If it can be done, one day there will probly be a need for it. I personaly thinks its good what they have done, because it proves that it is possible. Maby their style of doing things wont become a home thing, but you must admire these guys for acctualy DOing it.

Re:Hurmph. (0)

Anonymous Coward | more than 6 years ago | (#17717118)

excuse me for asking, but are you like a retard or something?

Re:Hurmph. (1)

ScottyH (791307) | more than 6 years ago | (#17717144)

I'm reasonably sure he was joking.

Re:Hurmph. (2, Interesting)

Tumbleweed (3706) | more than 6 years ago | (#17717228)

ScottyH wins!

And whoever moderated my joke as 'Interesting' must be smoking crack. Geez.

Re:Hurmph. (1, Funny)

Anonymous Coward | more than 6 years ago | (#17717164)

Do you write comments on youtube in your spare time?

link [xkcd.com]

Re:Hurmph. (0, Redundant)

jrobinson5 (974354) | more than 6 years ago | (#17717254)

Hell, 640 kb ought to be enough for anyone.

Re:Hurmph. (1)

LotsOfPhil (982823) | more than 6 years ago | (#17716752)

Overclocking is cool and all, but [8Ghz] extends beyond what some would perhaps call useful.
Come back in a decade or two and trying saying that. :)
I think they meant that the whole pouring-liquid-nitrogen-on-the-processor thing might not be applicable to most consumers.

Re:Hurmph. (1)

The Dotmeister (1043252) | more than 6 years ago | (#17717070)

I can hear the buzz...

8Ghz should be enough for everyone

Re:Hurmph. (1)

shaitand (626655) | more than 7 years ago | (#17717422)

I don't know if the poster meant that 8ghz wouldn't be useful or that any method of overclocking that requires liquid nitrogen is not useful.

Is it.. (-1, Redundant)

mastershake_phd (1050150) | more than 6 years ago | (#17716396)

Is it fast enough for Vista?

Why not 8 GHz? (3, Interesting)

Snowgen (586732) | more than 6 years ago | (#17716402)

Is 8000 MHz supposed to sound more impressive than 8 GHz?

I'm just confused as to why it was worded so oddly.

Re:Why not 8 GHz? (4, Funny)

camperdave (969942) | more than 6 years ago | (#17716518)

They just didn't want people thinking that they meant 8192MHz, I guess.

Re:Why not 8 GHz? (3, Insightful)

Chandon Seldon (43083) | more than 6 years ago | (#17716758)

Hz is a SI unit, so it's *always* powers of 10 and *never* powers of 2. The only special case is bits/bytes, which aren't SI units so there's an argument for the bastardized binary SI-esque prefixes.

Re:Why not 8 GHz? (3, Informative)

evilbessie (873633) | more than 6 years ago | (#17717064)

They have infact already designed and approved (IEC and IEEE) them, it's just that no one uses them really, so they look out of place. Basically the words change to Kibi, Mebi, Gibi, Tebi, Exbi, Zebi and Yobi; http://en.wikipedia.org/wiki/Binary_prefix [wikipedia.org] to signify increases of 2^10 rather than the decimal 10^3. You also add an i so it's GiB or Mib.

But all I thought when I read the story was of the reasoning of turning Mars into a giant space ship, whilst wiping out your own civilisation. "Because it's cool".

Re:Why not 8 GHz? (1)

Chandon Seldon (43083) | more than 6 years ago | (#17717176)

Yea, and if they had chosen something that people could say without looking like a retard then they might have gotten somewhere. Unfortunately, "I just picked up an extra 512 mebibytes of RAM for my computer" sounds really, really dumb.

I'll stick with my "bytes are not a SI unit, so megabyte can mean 2^20 bytes" argument.

Re:Why not 8 GHz? (4, Funny)

ToxikFetus (925966) | more than 6 years ago | (#17716586)

Maybe they're just trying to avoid HDD manufacturer nomenclature, where 8 GHz actually equals 7451 MHz.

Re:Why not 8 GHz? (5, Funny)

SmlFreshwaterBuffalo (608664) | more than 6 years ago | (#17716780)

Personally, I would've gone with 8,000,000,000,000,000 nHz.

8GHZ and still not as fast (1)

fishyfool (854019) | more than 6 years ago | (#17716412)

as my core2 duo e6600 oc'd to 3.4 GHZ Big Smile.

Re:8GHZ and still not as fast (0)

Anonymous Coward | more than 6 years ago | (#17716598)

Right... because 2 cores * 3.4 ghz is greater than 8 ghz how?

3.2ghz * 2 = 6.8ghz

6.8ghz 8

I am glad there is a math test to post on /.

Re:8GHZ and still not as fast (3, Funny)

Buzz_Litebeer (539463) | more than 6 years ago | (#17716652)

I think you have a misconception of how dual processor machines work. I do not think it means what you think it means.

Re:8GHZ and still not as fast (1)

joshetc (955226) | more than 7 years ago | (#17717420)

In just about all single-threaded synthetic benchmarks a 3.4ghz core2duo would outperform an 8ghz P4 though.

Re:8GHZ and still not as fast (1, Insightful)

Anonymous Coward | more than 6 years ago | (#17716664)

Didn't we get rid of the "Ghz is the only thing that matters" line of thinking after Intel left netburst?

Re:8GHZ and still not as fast (1)

lysergic.acid (845423) | more than 6 years ago | (#17716718)

are you sure that's how it translates over? just clockspeed * number of cores?

Re:8GHZ and still not as fast (5, Informative)

be-fan (61476) | more than 6 years ago | (#17716834)

It's about performance, not MHz. Let's use SPECint as the metric. SPECint_rate scales almost perfectly with both clockspeed and core count. A P4 gets about 6.5 SPECint_rate/GHz/core, while a Core 2 gets about 11.5 SPECint_rate/GHz/core. So an 8 GHz P4 would get a score of 51.68, while a 3.4 GHz Core 2 would get 78.2.

The P4's single-core results would be substantially higher than the Core 2's single-core results, though. Interestingly, it points to what the P4 was originally designed to do: achieve high performance through high clockspeed. If process technology had met Intel's original projections, we'd have 6+ GHz P4s by now that would have been competitive with current Core 2 chips.

Re:8GHZ and still not as fast (1)

cibyr (898667) | more than 6 years ago | (#17717004)

Someone was sucked into intel's P4-era marketing. His Core 2 is not faster in terms of MHz, but faster in terms of actually doing calculations. For which the Core 2 chips kick ass. If it really was all about MHz then Intel would never have given up on netburst for the Core architecture.

Wrong... (1)

sterno (16320) | more than 6 years ago | (#17716828)

First of all, core 2 duo would be two cores at 3.4Ghz so even in a totally perfect world, you're at best getting a collective 6.8Ghz. Furthermore, it isn't a perfect world. There's a certain amount of overhead in distributing tasks to each processor. Furthermore, the performance is limited based on how well threaded the applications are that you're running. A badly threaded application will likely never be faster than that 3.4Ghz on one core.

dag yo (0)

snarfbot (1036906) | more than 6 years ago | (#17716500)

fast and sexy, id hit it.

i wonder what kind of framerate it would get in quake 1 rendered in software.

"Smoking kills" (3, Funny)

feranick (858651) | more than 6 years ago | (#17716534)

Funny the pack of cigarettes with the government mandatory sign: "Il fumo uccide" (smoking kills...) besides the smoking board...

7,6 GHz with Pentium II ? (3, Interesting)

What the Frag (951841) | more than 6 years ago | (#17716602)

What I'm more curious about is how the frak they managed to get a FSB of 1,5 GHZ on a Pentium II 333 MHZ
http://valid.x86-secret.com/show_oc.php?id=159352 [x86-secret.com]

Re:7,6 GHz with Pentium II ? (1)

TheRealMindChild (743925) | more than 6 years ago | (#17716746)

The CPU identifier is bullshit. The Pentium II certainly didnt support SSE3, or any SEE for that matter.

Re:7,6 GHz with Pentium II ? (1)

ThisNukes4u (752508) | more than 6 years ago | (#17716786)

In that pic it says that it is capable of MMX, SSE, SSE2, and SSE3. I highly doubt that picture is true, seeing as how PII's only had MMX. Unless CPU-Z makes some assumptions about that by looking at the clock speed.

Not useful? (0)

Anonymous Coward | more than 6 years ago | (#17716612)

Since when is increasing CPU OPS not useful? Can new drugs be designed on the fly now? Do we have games that have Lord of the Rings level computer graphics rendered in real time? Until they can get me a holodeck and do molecular computation for drug design in real time .. then dont tell me that 8 GHz is more CPU than we ever need.

I don't think they meant that. (3, Insightful)

DRAGONWEEZEL (125809) | more than 6 years ago | (#17716806)

Everyone knows bigger MHZ is still king. It's just scale. How much you can do with the given clock cycle. I think they meant that it is not practical to run a processor at 3x it's normal rating using Liquid N as a coolant. It's only useful for the duration of the Liquid N supply, and that is a small Finite amount of time. Secondly, they overclocked the CPU but not Ram(according to CPUV which showed the ram @ 533 mhz) So we have the old bottleneck situation again...

The real question here is "Does MC Lag during battle?"

Almost there! (1)

arodland (127775) | more than 6 years ago | (#17716814)

We were supposed to have those 10GHz Pentium 4s last year. Well, it's a start.

Bill sez... (1)

A440Hz (1054614) | more than 6 years ago | (#17716842)

8GHz and 640kB are all anyone will ever need. (Yes, I've read Snopes about this)

Shortly there after... (3, Funny)

Tmack (593755) | more than 6 years ago | (#17716844)

...in its exceedingly fast speed, it developed AI and became aware. It quickly started amassing great stores of knowledge and began solving many previously unsolvable problems of the world, and then suddenly went silent and refused to respond to any further input...

Tm

They use CPU-Z to monitor. Looks like a cool tool (1)

viking80 (697716) | more than 6 years ago | (#17716846)

I notice that they use CPU-Z to monitor this CPU. Seems like a pretty good tool to monitor the CPU. Get a copy here http://www.cpuid.org/ [cpuid.org]

And as a harware engineer: As long as you dont boost the voltage too much (Which these guys prpbably did), you can not damage anything, so go for it.

Re:They use CPU-Z to monitor. Looks like a cool to (1)

pm (11079) | more than 6 years ago | (#17717322)

>> As long as you dont boost the voltage too much (Which these guys prpbably did), you can not damage anything, so go for it.

The thermal stress caused by varying rates of thermal expansion for silicon, the resin underfill and the package puts a a lot of stress of the flip-chip bumps cycling between "room temp" and cryogenic temperatures. I'm not so sure that I'd say this isn't going to damage anything.

There'd like be no problem if you do it a couple of times, but over more thermal cycles, I'm certain the some of the bumps would start to shear from metal fatigue. There's been studies of flip-chip designs on Mars examining long-term reliability of the bump solder connections thermally cycled from day to night, and most conventional design last less than 100 cycles. If you design for this, you can fix it but I am pretty confident that the Pentium 4 was not designed for cryogenic cycling.

Sheesh (0)

Anonymous Coward | more than 6 years ago | (#17716874)

8000 mhz should be enough for anyone...

does it make sense ? (1)

smutas (782635) | more than 6 years ago | (#17716884)

does it make sense ? and power usage ? Just some more Watts ? I think that "smart" way is the right one.

Forget nitrogen, go for broke with (1)

jackstack (618328) | more than 6 years ago | (#17717304)

HYDROGEN! At a boiling point of -252C, they should be able to get about 60 degrees cooler. They should be able to run even faster. I can't imagine any other concerns.

It's Spaceball One! (1)

BadEvilYoda (935532) | more than 7 years ago | (#17717414)

They've gone to plaid!

What is really hard to believe... (1)

theendlessnow (516149) | more than 7 years ago | (#17717416)

What is really hard to believe is that only 2 days after the successful overclock, Microsoft sent him (for free) a Ready for Vista decal for his PC.
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