Cheap GPUs Rendering Strong Passwords Useless
Depends on the algorithm used to hash the pass and the way the attack works. I believe ighashgpu bruteforces it by generating all possible hashes and simply comparing them to the collected hashes. One password or a thousand - you only have to do it once. It's the same as using rainbow tables, without the need to have tons of storage. But again, it all depends on the algorithm.
Gravity Lamp Grabs Green Prize
With a system of pulleys?