hiya Mace,
about the Ninja review statement: I don't know if you will break any speed records either...but the FSB goes up to 300 and I've yet to hear an AMD board hitting a stable 300 (600Mhz effective) yet... =) I can clock my XP2500 straight up to 220x10 without even messing around in it. I've not yet had the time to really dive into how far I can get this thing to go.
I don't know of what limitations he is talking about other than a complaint that 2.8v on the vdimm isn't enough. Again, I am at 220x10 with Buffalo DDR400 CH-5 @ 2.7v. With the latest BIOS...its a cinch to overclock.
As for RAM, I cannot recommend the HyperX PC3500 or PC4000 (or the PC3700) as I am seeing issues crop up with it (not just DFI NF2 issues either).
But I can recommend Buffalo DDR3200 (BH-5 or CH-5 chips) as being monster RAM. No heat spreaders, but I have had no need for them yet.
I can also recommend the TWINX Corsair modules. I do not have any of these, but the lab in Taiwan has tested them and they are good clockers.
GEIL Golden Dragon is highly recommended as being excellent RAM. GEIL blue-shielded RAM is very problematic in ASUS, Giga, DFI NF2 boards (and a few others). DO NOT BUY THE BLUE SHIELD RAM FOR NF2. It might work...but why take the chance?
OCZ makes excellent memory also. I can ask the lab if you have a specific module in mind.
TwinMOS is probably the best RAM I have seen to date. The CH-5 and the TMD chips are awesome.
I also advise buying twin-packs of RAM, guaranteed to run in dual-chan mode. I have never had a problem just buying two at once at same time and getting them to work in dc...but again, err on the safe side.
If you have any other questions, please don't hesitate to ask me =)
Travis