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Comments

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Apple Sells More Than 10 Million New iPhones In First 3 Days

edxwelch Re:10 Million? (206 comments)

I heard the microwave charging doesn't work too well

about two weeks ago
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NVIDIA Launches Maxwell-Based GeForce GTX 980 and GeForce GTX 970 GPUs

edxwelch Re:Still 28nm (125 comments)

I doubt that.
TSMC 20nm will be ready for GPUs a lot sooner than their 16nm process. The only reason there are no 20nm GPUs yet is because the initial ramp was fully booked out by Apple.
Meanwhile, a comparison of Apple's 20nm A8 density versus 14nm Core M, indicates Intel's 14nm may not have such a density advantage as they claim: https://www.semiwiki.com/forum...

about two weeks ago
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Why the iPhone 6 Has the Same Base Memory As the iPhone 5

edxwelch More beer! (262 comments)

The explaination is quite simple: more beer!
If you buy the 16GB instead of the 64GB you have and extra $100 left over to spend on beer!

about two weeks ago
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NVIDIA Launches Maxwell-Based GeForce GTX 980 and GeForce GTX 970 GPUs

edxwelch This is bad for AMD (125 comments)

The GTX 970 is as fast as AMD's flagship R9 290X, much more power efficient and is $170 cheaper. This means AMD will have to knock down prices by a huge amount and
they are sort of depending on graphics revenue to break even, because of falling CPU marketshare.

about two weeks ago
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NVIDIA Sues Qualcomm and Samsung Seeking To Ban Import of Samsung Phones

edxwelch Interesting article on Semiaccurate about this (110 comments)

Previously, Nvidia said that it would license it's Kepler GPU cores to third parties. Semiaccurate maintains that this licensing program was in fact bogus and was conceived purely to justify future patent trolling activities. Semiaccurate also claims that
Nvidia tried to "shakedown" Apple with the same patents and Apple subsequently gave the contract for the Mac Pro GPU to AMD as punishment.

about a month ago
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Could Tech Have Stopped ISIS From Using Our Own Heavy Weapons Against Us?

edxwelch ISIS took a strange turn (448 comments)

I must say ISIS took a turn that no one was expecting: after much success as a post-metal band and releasing 4 albums, they decided to re-emerge as Islamic terrorist group in Iraq.

about a month ago
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Ask Slashdot: the State of Free Video Editing Tools?

edxwelch Re:Blender (163 comments)

If it was to be intutitive, at least they should have the basic commands accessable from the menu. For instance, to cut the track can only be access via a secret shortcut.

about a month ago
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Ask Slashdot: the State of Free Video Editing Tools?

edxwelch Re:Blender (163 comments)

blender is good for video editing, but there's no way on earth that you could call it initutive. The quirky UI takes a steep learning curve.

about a month ago
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Apple Reveals the Most Common Reasons That It Rejects Apps

edxwelch Re:Things Apple Apparently Enforces at Random (132 comments)

Yeah, there's a lot of garbage apps, for instance apps that just display a single jpeg and game engine demos that have been repackaged. These never get rejected. It's pretty obvious that Apple is using an automated app approval system

about a month ago
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AMD Releases New Tonga GPU, Lowers 8-core CPU To $229

edxwelch Re:Sigh. (98 comments)

It has much less power consumption than the R9 280 though. It would be more interesting as a laptop version

about a month ago
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Research Shows RISC vs. CISC Doesn't Matter

edxwelch Re:The article is bad - mfg technology dominates (161 comments)

From the origonal paper www.cs.wisc.edu/vertical/papers/2013/hpca13-isa-power-struggles.pdf (which ExtremeTech does not link to):

Technology scaling and projections:
Since the i7 processor is 32nm and the Cortex-A8 is 65nm, we use technology node characteristics from the 2007 ITRS tables to normalize to the 45nm technology node in two results where we factor out tech-
nology; we do not account for device type (LOP, HP, LSTP).
For our 45nm projections, the A8â(TM)s power is scaled by 0.8Ã-- and
the i7â(TM)s power by 1.3Ã--. In some results, we scale frequency
to 1 GHz, accounting for DVFS impact on voltage using the
mappings disclosed for Intel SCC [5]. When frequency scal-
ing, we assume that 20% of the i7â(TM)s power is static and does
not scale with frequency; all other cores are assumed to have
negligible static power. When frequency scaling, A8â(TM)s power is
scaled by 1.2Ã--, Atomâ(TM)s power by 0.8Ã--, and i7â(TM)s power by 0.6Ã--.
We acknowledge that this scaling introduces some error to our
technology-scaled power comparison, but feel it is a reasonable
strategy and doesnâ(TM)t affect our primary findings (see Table 4).

about a month ago
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Research Shows RISC vs. CISC Doesn't Matter

edxwelch Wrong conclusion (161 comments)

If you look at the graph "raw average energy normalised" you see that the ARM A9 core has the lowest energy score -> that clearly shows ARM being the most efficient and hence the conclusion is completely wrong.
Still the test is very interesting. I would like to see it updated with latest CPUs

about a month ago
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AMD Launches Radeon R7 Series Solid State Drives With OCZ

edxwelch Re:This is something I wanted for a long time (64 comments)

CPU performance is worse than Haswell and IGP is better - that's what I said. Motherboards are about the same price

about a month and a half ago
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AMD Launches Radeon R7 Series Solid State Drives With OCZ

edxwelch Re:This is something I wanted for a long time (64 comments)

They don't anymore. Kaveri is about same price as i3 Core/pentium Haswell, but with more power draw and less performance. Where AMD win is the IGP, which always has been better

about a month and a half ago
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AMD Launches Radeon R7 Series Solid State Drives With OCZ

edxwelch This is something I wanted for a long time (64 comments)

I'm glad to see AMD is using their development budget wisely and not wasting it on other stuff, like it making their x86 cores competitive versus Intel

about a month and a half ago
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Processors and the Limits of Physics

edxwelch Re:what diminishing returns? (168 comments)

Not really, because the tech is improving all the time. At 20nm the have high-k metal gates and at 16nm FinFETs.

about a month and a half ago
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Processors and the Limits of Physics

edxwelch what diminishing returns? (168 comments)

Each semiconductor node shrink is faster and more power effiecient than the previous. For instance, TSMC 20nm process is 30% higher speed, or 25% less power than 28nm. Likewise, 16nm will provide 60% power saving than 20nm.

about a month and a half ago
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Switching Game Engines Halfway Through Development

edxwelch Unreal doesn't work well on iOS (127 comments)

He claims that Unreal engine works well on iOS, but this is not really true. Basic features like dynamic shadows are not supported at all and performance is pretty poor - you really need a A6 based device to run it well.

about a month and a half ago

Submissions

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Intel flops on Android compatibility

edxwelch edxwelch writes  |  about 5 months ago

edxwelch (600979) writes "Intel claim that 75% of all Android apps in the market are pure Java and don't feature any native ARM code. Using their binary translator they hope to bring compatibilty up to 90%.
However, a new report conducted by ARM disputes this. They ran a survey of the Android app market and found that only 20% of the top apps are pure Java, 30% are native x86, 42% require binary translation and 6% do not work at all on Intel's platform. To make matters worse the level of compatibility is falling. They also found that running an app in binary translation mode takes a huge performance hit."
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OpenGL 4.4 already has DirectX 12 and Mantle-like features

edxwelch edxwelch writes  |  about 6 months ago

edxwelch (600979) writes "The announcement of DirectX 12 was a big focus of attention at GDC yesterday. The new API will bring Mantle-like low level access to the hardware, reducing the CPU overhead.
The OpenGL talk "Approaching Zero Driver Overhead in OpenGL", on the other hand, received considerably less media attention. The OpenGL camp maintains that the features to reduce CPU overhead are already present in the current version. They suggest using the extensions such as, multidraw indirect combined with bindless graphics and sparse textures, OpenGL can get the similiar "close to the metal" performance as Mantle and DirectX 12."
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Intel engaged in below cost selling

edxwelch edxwelch writes  |  about 8 months ago

edxwelch (600979) writes "An analyst at Bernstein Research has found that Intel is selling their tablet Bay Trail chips to OEMs below cost, concluding that after end rebates, Intel’s tablet revenues are likely to be “close to zero,” while profits will be negative.
Intel has responded that the “special costs” Intel is incurring are not pushing down gross margin.
Intel needs to offer the subsidies to OEMs building $199-$299 devices to bring the bill of materials down and make them competive with cheaper chips from the likes of MediaTek and Rockchip."

Link to Original Source
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Kavari details emerge

edxwelch edxwelch writes  |  about a year ago

edxwelch (600979) writes "Details of Kavari, AMD's new APU were revealed at APU13 today. The desktop version will go on sale on 14th January 2014. It will have two Steamroller CPU cores and a GPU with 512 SPs (equivalent to Radeon HD 7750). A demo was showing Kavari running Battlefield 4 at twice speed of a Core i7 4770K with GT630."
Link to Original Source
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AnTuTu benchmarks optimized to favour Intel

edxwelch edxwelch writes  |  about a year ago

edxwelch (600979) writes "A recent report by ABI research showed Intel's Clover Trail+ outperforming SoCs from Samsung, Qualcomm and Nvidia.
However, a EETimes article casts serious doubt about the validity of the report, in particular the AnTuTu benchmark used to test the chips.
"Going from the 2.9.3 version of the AnTuTu benchmark to the 3.3 version, the overall AnTuTu scores increased 122 percent, and the RAM score increased 292 percent for the Intel processor, while the scores for the Samsung processor increased only 59 percent and 53 "
To top things off, somebody analyzed the assembler code in the AnTuTu benchmark and found clear evidence that the benchmark had been tweaked to favour x86 processors."
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The real reason Firefox lost to Chrome: Firefox 4

edxwelch edxwelch writes  |  more than 2 years ago

edxwelch (600979) writes "In November last year Chrome overtook Firefox in market share for the first time. What people don’t realise is that the release of Firefox 4 caused a large part of the decline.
Firefox 4 was a major new release and came with a brand new Javascript engine and HTML5 parser. Unfortunately, these new features came with major memory leaks and performance bugs. The result was that if you used Firefox 4 for an extended period of time the browser would eventually become unresponsive, making it virtually unusable."

Link to Original Source
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Making iPhone games "battery friendly"

edxwelch edxwelch writes  |  more than 4 years ago

edxwelch (600979) writes "An article I wrote for GameDev (http://www.gamedev.net/reference/programming/features/iPhoneBatSave) shows how we made our iPhone game "Armageddon Wars" battery friendly by dynamically throttling the frame rate during game play"
Link to Original Source

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