Hi just want to no what is the most I can go up to with a i7 950 overclock stable on air cooling the 2 coolers am looking at are Prolimatech Megahalems Rev B and Thermalright Venomous X I was interested in the Noctua NH-D14 Dual Radiator But to big and kinda heavy.
First the cooler....I am not sure about the Venomous X, but I use the thremalight 120 eXtreme Rev C and couldn't be happier with it. I haven't researched the Venomous X. The local PC shop here actually stocks the 120, in this poh dunk town, so I got it. It is big, but easy to install, very easy, and works even easier....fired right up first try and temps dropped like crazy. Also it has a push/pull configuration that I am using. I am not sure about your case and mobo, but on mine the pull fan lines right up with the 120mm case exhaust fan and sucks all that nasty heat right out of the case.
As to speeds to attain, I would say 4.0 - 4.2 is in range. I am running a 930 with the Thermalight at 70C +/- depending on ambient case temp.