XFX 9800GX2 Temperatures Problem

[Dark-Zomby]

Sorry for my english.

First of all my system:

Windows Vista Ultimate x64-bits
Core 2 Quad Q6600 @ 3.00GH'z
XFX 9800 GX2 at 640MH'z ( Core ) no overclocked
6.00GB DDR2 Ram 800MH'z

A few days ago my graphics card reaches when i was playing games 115ºC, And i was getting only 7,300 GPU points on the 3D Mark Vantage. The guys of NVidia forum recommended me to change the case and the power supply, I buyed the Antec Nine Hundred Two and the Corsair TX850W, and then i get 10,500 GPU Points and only 80ºC at full gaming and 60-65 idle ( with all fans of the case, CPU and graphics card at 100% ), but ONLY on CRYSIS ( i think only ) when i play with 0xAA Very High and 1680x1050 i get more than 100ºC and the performance low a lot, what the cause? can you all help me? Please.
My room is on 28-29ºC, i think is hot, but playing games like The Sims 3 or Prototype at maximum settings the temperature are normal.
And when i play crysis and the temperatures ups the temperatures up and low everytime to 20 and 40ºC, again and again...
Thanks again

[Cybermancer]

Crysis pushes your GPU more than other games do. It's the same for everyone. Hence, temperatures are higher than when playing other games.

Besides that, Crysis is a very demanding game and still brings the most powerful current systems to their knees.

100C is very hot, but I reached those temperatures in Crysis with my old 8800GTs sometimes, too. You could try to clean your card with a can of compressed air to get rid of dust inside of it, or you could also reapply some thermal paste on the chip itself.

[N00bst3r]

Yeah id suggest giving the card a clean, my old 7950GX2 would reach over 110c easy if it was pretty dusty (but also to its very $hit HSF). Give it a clean and stick some decent thermal paste on the chip. That should help lower overall temps.