The manufacturers of each provide utilities on their sites for overclocking.
As wonderful as some people may portray a 3rd party (like riva tuner) i wouldn't trust my expensive hardware to them -so i would stick to the manufacturers if they provide them.
Erm, is it just me or does anyone else see a slight hardware mismatch here? Eighteen Gb of ram and one 5770?,
Wouldn't it have made more sense to save xxx hundred dollars by having maybe just 4/8Gb and upgrading to X-fired 5970's instead?
I think this may be an attempt at a J.M. System especially seeing as Op obviously wants to impress with clocking,but seems none too bothered about learning how to do it,
I hate to say it, I really do but, Pebcak.