Unleash the underlying hardware. With comprehensive overclocking tools to push the limits on front side bus (FSB) speed and support for higher memory speeds, the NVIDIA nForce 680i SLI MCPs were designed for overclocking. 

To my experiance, overclocking is a big bad problem to motherboards and ect ect.
I dont know much about how a computer works, allthough i can put one together blindfolded. Imho i'd get the EVGA nForce 680i SLI NVIDIA.

I run an AMD, so pentium isnt a stronghold of mine =\
Another thing thats nice is you can push 2GB RAM (if you get 4x 512MB cards)

Graphics wise, NVidia isnt that good, i run ATI (Raideon) and iv'e never had a problem with them, NVidia i had in my last  computer and it was absolute pants.

Also its SATA compatable... So information is sent/recieved faster than normal IDE. Always an added bonus for stuff like that

You can connect 2 sets of speakers AND a stereo to you pc if you get this board, thats some kickass sound you will have :P

Khan!