I am running BOTH intel & amd d/c cpu's. Through benchmark tests (pc mark '02 & '05) the biggest difference that i see is the memory controllers. The Intel scores MUCH higher on memory than amd.
SPECS
Intel AMD
Gigabyte GA965p-ds3 skt 775 Asus M2N-E skt AM2
E6600 2.4 Ghz X2 4600 2.4 Ghz
2 Gig Corsair DDR2-800 2 Gig Corsair DDR2-800
Gforce 7600 GT OC Gforce 7900 GS
2-80 gig Sata2 Raid O 1-80 gig Sata 2
2-250 gig Sata2 2-250 gig Sata2
1-500 gig Sata2
1-DVD-Rom 1 DVD-Rom
2-Sata DVD-RW 2-Sata DVD-RW
Both are running stock speeds (no overclocking), both have factory supplied drivers, XP Pro SP1.
PC Mark 2002 scores:
Intel - CPU-9,484, memory-30,184 HDD-N/A (don't know why that happened)
AMD - CPU-7,928, memory-11,291, HDD-1387
As far as encoding, burning, and multi-tasking goes, they appear to be about the same! Only slightly noticable time differences. Gaming definitly goes to the AMD, but that one has the bigger video card in it, so it's not really a fair fight there. The last run on PC Mark '05 was as follows:
Intel - 6245 - with all of my normal startup programs running!
AMD - 8735 - with a fresh install and no other programs loaded
Which is better...........
it's just to damn hard to say. Both are smokin' fast, and do any job that i throw at them. Both setups were easy to work with, went together w/little to no problems, and come on when i hit the power button!!!!!!!!