This is the memory I use:
I can run this memory stable for benchmarking at 470mhz (235 FSB in 2:1 mode) at 2-2-2-5 timings. My FX then runs at 2.585 Ghz (2.2 Ghz stock). I can boot in Windows at 476mhz (238 FSB in 2:1 mode) at 2-2-2-5 timings, but can't use 3D applications. Other stuff runs flawlessly. For every day use I run rock solid stable at 460 mhz (230 FSB in 2:1 mode) at 2-2-2-5 timings.
For every day use with decent air cooling (I have lots of upgrade and extra fans in my case) you can probably run it rock stable 24/7 at 450mhz (225 FSB in 2:1 mode) with 2-2-2-5 timings. That is if you are lucky and get premium and matched sticks. When doing my due diligence I found only one person on the web that had issues with this memory (not matched sticks). All other users report very good to great results.
I got mine from www.monarchcomputers.com
FX 51 100% Pure Air / 2K3 = 8309