Greetings! My machine is currently running a 8600GT (roughly four years old) which has the acoustic properties of a hoover at the best of times. Unfortunately, over the past few months it has developed an infuriating habit of breaking into a sustained growling noise when booted, which can only be stopped by either violently slapping the top of the PC case (a method of decreasing effectiveness and likely detrimental to other hardware) or leaving the machine for a few minutes, allowing the GPU to idle and enabling the fan to slow down enough to stop the problem. Whilst replacing the cooler would normally be my method of choice for solving the issue, the graphics performance is already atrocious (screen has native resolution of 1920x1080, not a chance of this whilst gaming). I plan on replacing the sorry thing with an HD5770 (I would go for a 1gb GTX460, but very low budget due to sailing and upcoming uni). However, a friend told me that the bottleneck created by my Pentium E2200 and Asus P5B (unable to clock beyond 2.5GHz, currently attempting to find a solution) would effectively negate any tangible benefits of the card. In short, is he correct?