Out of the box, 450FSB is about the best you can expect, with mods to the Memory and NB chipset voltage, and the L-12 mod on the
CPU, it is capable of 500FSB.
Sooo...If you leave it stock, some good PC3500, if you mod it, PC4000 is what you want.
Geil Platinum DDR500 that I use is running at 520FSB on a box stock DFI Lan Party using CAS 3-4-4-8, and gives me 3.8GB/s memory bandwidth on Sandra, vs 2.4GB/s using Kingston HyperX at 333FSB and CAS 2-2-2-5
EDIT: Try New Egg, they have it for 152$
http://www.newegg.com/app/ViewProduc...144-516&depa=1