The i5 will perform better because it is more efficient cores just because it has 8 cores doesn't mean it is better. I tried to save by going the 8320 and a top of the line motherboard and have to say all the benches are close but when it came to real world computing the AMD was no where near the Intel chip but to say the least the performance was so poor for me overclocked or not I took a loss and bought an Intel and should have spent the extra in the beginning but I thought I could save and only see marginal performance drop but for me that was not the case.
Michael