| JEMC said: I have a doubt that I'm sure some of you wil be able to answer me: Do IBM and AMD processors differ much from a performance perspective? I know that AMD suffers compared to Intel due to having a lower IPC, but what about IBM? Do IBM processors have a higher IPC than AMD's like Intel does? I'm asking because we all know that WiiU's IBM CPU is much slower than the Xbox360 IBM one and that it's performance won't be the same. It will be lower. But with the PSwhatever and nextbox going with AMD the comparisons will be harder to make. |
I think that someone here recently did some math on it:
360 - 2.0IPS/cycle/core * 3 cores * 3.2GHz = 19.200MIPS
WiiU - 2.3IPS/cycle/core * 3 cores * 1.243125GHz = 85776MIPS
But WiiU's CPU is out of order execution, and Xenon is in order, so that can cut that number (19200) by a quite lot in some cases.
As for AMD, current CPUs have some 3.5-4 IPS/cycle/core, and Intel is all the way up around 9.
http://en.wikipedia.org/wiki/Instructions_per_second
