This is hard. CPU 'clock cycles' are not equivalent. This is why Amazon uses a very specific processor and year to create their ECU. The 2007 1.2Ghz processors all road on 800Mhz FSBs, which limited the amount of memory bandwidth (among other things). Whereas modern CPUs and the much better/faster busses of today mean that you can feed the CPU much faster.
My point isn't that you shouldn't do it, it's simply that it's tricky.
If I had to make a recommendation it would be to baseline off of the Amazon ECU.
--Randy
On Oct 25, 2009, at 7:56 PM, Sam Johnston wrote:
I think you've touched on an interesting point there which ties in to the "need" for a universal compute unit