I just got this new Gigabyte GTX 560 last Saturday and I put it under some stress test like furmark, OCCT etc and the card gets very hot (around 90C as high as it gets). I'm running stock thermal paste and a stock heastink which has 6 heat-pipe with 2 fans. Iwas hoping not to tamper with the heatsink and just run stock but i'm starting to wonder if it's the thermal compound and if it's low quality with poor heat transfer. What should I do? Go ahead and replace the heatsink with aftermarket or just the thermal paste?