I have an i3 540 @ stock speed on a gigabyte h55m s2v mobo with 4 gb 1333 mhz ram. In the next few days i plan on geting another 4 gigs and a 260x. I want to know will my cpu botleneck the gpu and if so can i overclock such a low end cpu and mobo and to what degre? I dont want high tempratures so should i buy a 7$ deep cool theta 115 cooler or do i need a 20$ rajintek rea heatsink? I guess i would not go a lot over 4ghz.