That is not normal.
What is your OS, CPU, video card, video driver version and how much Watt does your PSU output? How hot does the GPU get and how are you cooling it?
Thanks for your reply. Here is more info:
OS: Windows 7 32bit
CPU: E8400 @ 3GHz
Vid Card: XFX 7850 DD 1GB
PSU:OCZ 600w ModXtreme Pro
Vid Driver: 13.1 catalyst
GPU Temp: 60 C at full load
Core Clock: 1045
Mem Clock: 1310
GPU Usage:99%
No Overvolting
Stock XFX Double D Cooler (2 fans, copper pipes etc)