If you're going to be playing games on it, I'd recommend going with a SS40G instead. They are better suited for gaming, get better performance (which you'll see in the benchmarks)

The SS51 isn't even out yet, how did they do benchmarks with it? :-)

Reasons I like the SS51:
USB 2 and Firewire
SPDIF sound
Heatpipe processor cooling
Newest SIS chipset supporting DDR333, and 533mhz bus

The P4 right now has matured very well, and is begining to show awesome peformance leaps. AMD is falling behind with the Athlon now, and I will no longer consider them until they get the Hammer based chips out. Even with their recent revisions to the Athlon, it's pushes out a ton of heat. I love the competition that AMD is giving to Intel, but for now Intel has the better platform for a system I plan on keeping for a while. If my system wasn't just begging for a replacement, I'd wait on the Hammer.