Kind of a noob question, but this is my first time trying to OC and gpu. Stock clocks are 650/900. I have it up to 700/950, around what the lower level stock OCed ones are at. Temperatures without adjusting the fan are at 55 idle and around 66 after playing TF2 for an hour or so. The card is fine in any games I have tried, but it does artifact in the firefly forest in 3DMark. My main question is, even though the temperatures seem in check still, would getting a better cooling solution such as the accelero S1 help me to OC it any higher or am i just hitting the limits of the card?