Need A Mobo and CPU (Advice)

[roninblade]

Well i just bought a Mobo and CPU, all i care about the mobo is that it is sli capible and works well with the 7800GTX chipset. For the CPU i need one that will go well with my 7800GTX and will overclock well. Thanks. Also i only have a gig of Muskin Value ram. should i upgrade that?