02-21-2015, 10:57 PM
When I say "manycore CPU" I'm talking about a Xeon Phi-like accelerator, such as if Adapteva ever made the 4096-core variant of their Epiphany chip that they claim they can make.
If you saw Katja Malvoni's talk at Passwords14, you know the 64-core Epiphany pulls 4812 c/s on bcrypt while drawing only 2W of power. Adapteva claims the 4096-core version only draws 80W, and if the performance scales linearly (it should based on the 16-core vs 64-core speeds) then the 4096-core version would pull 308 KH/s on bcrypt. That's 44x-56x faster than today's GPUs & high-end CPUs on a fraction of the power.
I imagine Intel will also release a version of the Phi that will be worthwhile for password cracking at some point in the future, even if it does take them 6 years like it did Nvidia
If you saw Katja Malvoni's talk at Passwords14, you know the 64-core Epiphany pulls 4812 c/s on bcrypt while drawing only 2W of power. Adapteva claims the 4096-core version only draws 80W, and if the performance scales linearly (it should based on the 16-core vs 64-core speeds) then the 4096-core version would pull 308 KH/s on bcrypt. That's 44x-56x faster than today's GPUs & high-end CPUs on a fraction of the power.
I imagine Intel will also release a version of the Phi that will be worthwhile for password cracking at some point in the future, even if it does take them 6 years like it did Nvidia