My graphic card sapphire x1800xt 256MB is going more than 100 c when i run ATI tool scan for artifacts test.My Mobo is Asus p5ld2 Vm se and PSU is powerone 640W(got today from funky).I dont know why it is happening .I overided the temps with ati tool and cabinet is kept opened even though it is idealing at 75C and at load keeps on increasing.Please any one help me getting rid of these temps.