Here's my setup:
DFI LanParty UT NF4 SLI D
AMD Opteron 165 @ 2.4 Ghz
Zalman Fatality Heatsink 120mm
2GB Gskill DDR500 @ 3-4-4-8 1T and 267Mhz
2x36GB 10K WD-Raptor, 1x80GB 7.2K WD-Caviar
BFG 8800 GTX, 768MB GDDR3
Silverstone ST60F 600W PSU
Antech 900 Chasis
This is a link to a review to the ram that I currently use.
http://www.ocforums.com/showthread.php?t=450629&highlight=DFI+RAID
I am in complete agreement with this guy. I currently have this ram clocked to 267Mhz running 1:1 with my CPU @2.4GHz. It's been stable in gaming for months. Both ram and CPU are at STOCK Voltage.
I can easily run the CPU at 2.6 with a divider, and would probably get 280-290 MHz out of these chips for a 1:1 ratio at 2.6GHz with some tweaking. Add to this, the fact that this set of ram is priced very competitively, and there is really no question that it is the best choice. Other than that, the Mushkin Redline PC4000 is pretty much made for this mobo/cpu combo as well.
Hope this helps.