Let me start with the difference of the 4600 +10% and the 4800 +8%.
On the ASUS A8N, you can OC with % increase. The main difference between the two is the L2 cache, only that. The 4600 with 512KB x 2 and the 4800 with 1MB x 2. both run @ 2.4 Ghz. That explains the small difference in performance between the two. I only was able to OC the 4800 by 8%, more than that it would crash. The 4600 could handle a little more, 10%. On the P5B, just change the multiplier and the frequency (example: 10 X 340 Mhz)
About my installation:
All the tested computers were fresh Windows XP 32 installed, with all SPs. On the 4 GB RAM computers, the OS would only recognize 3 GB, but that did not matter, because I took 2 GB and tested with the same results (the 2GB were dual channel). After the fresh Windows install, nothing but the Photoshop was installed (of course of the Adobe SPs). I did all that myself, so there is very little margin for discrepancies. The BIOS were all checked for the best performance. I rechecked when OC, and constantly monitored the temperature on them.
Why do I use this method for benchmarking?
I’ve been using this, since Photoshop 6, and as many of you suggested, this is a common and known test in the Photoshop forums. This is not my invention.
My final point is: are the tests being published correct? If this specific test gives the edge to the AMD, does anyone tried any other test that the Intel was not as good? Please, I don’t deserve to be banned for my questions and affirmations, I just want some help, as I mentioned before. This is a real question, not some foolish joke. I have a job, and would not waist my time and yours too. Maybe someone have a coherent explanation.
I am willing to answer all your questions about this matter. Maybe this could help me, and many other users. If I did not answer as fast as you post, is because I have to work too, sorry for that.