OCZ VX Memory + DFI nForce4 = DDR533 at 2-2-2@ 2005/03/05
If you are a raving enthusiast, you will have to have OCZ VX memory. If you are considering a DFI nForce4 purchase, then VX should be at the top of your memory list. If you want top performance, then you should at least consider OCZ Gold VX even if it requires a DDR Booster to run. Yes, OCZ PC4000 VX Gold is that good!
//very strong words from Anandtech