1st , What's the specs of your gfx card
2nd, Nvidia or Ati
3rd ,Model gfx card that you have
4th ,Cooling solution for your gfx card
5th ,Is your card overclocked?
I have a ATI 5970 gfx card with 4096MB GDDR5(4,800Mhz) and my card seems to run all the games
at 60 degrees with or without vsync enabled.I have the standard air cooling system on my card.My gfx card is overclocked at the moment +500Mhz overclocked.