I'm overclocking my Asus GTX 780 Direct CU II with msi afterburner. When I run furmark to test it, the clock rate starts off at 1228 and the power is 75W, but then once the temperature gets over 50C, the rate starts to decrease, and eventually drops as low as 1149mhz and 63W. There's no risk of overheating, as the temperature never gets over 65, even when stress testing for an hour, so I was wondering if there's a way to prevent it from reducing the clock rate. Maybe have it stay at 1228 until it reaches 70 degrees? Thanks in advance!