kajabla :
It is technically true that his processor has 8 physical cores and yours has only four. Performance is all that matters, though (see above).
Pinhedd, can I see a source for that 2.5x IPC claim? I don't think it's accurate. Intel CPUs are definitely ahead in IPC right now, but not 2.5x.
It's almost exactly 2.5 times
i7-2600 @ 3.4 Ghz (3.5Ghz with turbo, but Dhrystone is pretty hard on the TDP) = 128,000 MIPS
128,000 MIPS / 4 cores = 32,000 MIPS per core
32,000 MIPS per core / 3,400 Mhz = ~9.4 Instructions per core per clock
FX-8150 @ 3.6 Ghz (up to 3.9 Ghz with full turbo, but Dhrystone is pretty hard on the TDP) = 108,000 MIPS
108,000 MIPS / 8 cores = 13,500 MIPS per core
13,500 MIPS per core / 3,600 Mhz = ~3.75 Instructions per core per clock
I'm under the impression that AMD's turbo is more aggressive than Intel's so I'll compute it at 3.9 Ghz as well
13,500 MIPS per core / 3,900 Mhz = ~3.46 Instructions per core per clock
Now we compare the IPC
9.4 / 3.75 = 2.5x
9.4 / 3.46 = 2.7x
So it's arguably somewhere in the range of 2.5 times the IPC, which is in agreement with what we know about the architecture
The MIPS page on Wikipedia has a bigger list and a similar conclusion
http://en.wikipedia.org/wiki/Million_instructions_per_second