Firstly, graphics cooling, the Zalman VF900Cu, its a beast of a copper solution with heatpipes, and by far the most effective cooler ive ever seen, possibly even coming close to outdoing water, its quiet too. Tested on a 7800GT under full load, the 900cu returned a truely impressive load temp of 41c, now thats impressive.
as for your OC woes, what RAM do you have? if youonly have cheap RAM that will be why you cant OC, cheap RAM is made to specification, nothing more, nothing less. but if yougive us as much detail about your components as possible, in particular, RAM settings and make, mainboard and CPU stepping im sure we can help you eek something out of it
