The AMD FX 8150 ships at a clock speed of 3.6ghz, which is markedly faster than the last generation X6 1100T flagship, which was clocked at 3.3ghz.
We overclocked both the Core i5 2500k and Core i7 2600k systems to the same 4.6ghz clock speed as the AMD FX 8150 processor, by changing the multipliers, leaving the FSB at reference speeds, and memory at 1600mhz. This negates the clock differential between all the chips.
When the clock speeds are matched the performance differential between the Core i5 2500k and FX 8150 is very close, 7.29 points compared to 7.32 points, in favour of the FX 8150. It is worth reiterating that the FX 8150 has eight physical cores while the Core i5 2500k only has four.
Surprisingly, even at 4.3ghz, the last generation Phenom II X6 1100T outperforms both the Core i5 2500k and FX 8150 – scoring 7.51 points. This is particularly interesting on an architectural level as the FX 8150 has two extra physical cores when compared to the X6 1100T.