2.6 with this combo?

[MBrown]

EPoX EP-9NPAJ SLI + (Opty 170 plus the rest in my sig minus the MSI mobo and 3500+) = 2.6ghz overclock likely?

 

[Ricemarine]

More than likely you're guaranteed past 2.4 GHz. 2.6 GHz is possible, but hey, luck of the draw.