Temperature Problem on my Q9550

Hello, I just got an Assembled Pc and I installed Os By myself and something I crumpled ... My cpu is constantly 35C ° to 50C ° even on minimum use (eg Crysis, NFS Undercover ect ...). Can you help me because I do not understand these temperatures.

I give you my config because it can help you:

Psu: Be Quiet Dark Power Pro 650W
Case: Cooler Master 932 HAF
Motherboard: Gigabyte GA-X48T-DQ6
Ventilator: Cooler Master V8
Processor: Core 2 Quad 9550
Memory: G. Skill Kit Extreme3 2 x 1 GB PC10600 HK
Graphics Card: ATI Radeon 4870 gigabyte
Hard Drives: W WD Caviar Blue 640gb.

my previous motherboard runs at 29C °, I thought that the problem come the establishment of thermal paste because being a novice in this area i dont understand this
pls Help.

you know, your temperatures are the normal for a Quad Core
So in my opinion, no hassle to for you

For the thermal paste, just a thin layer (a grain of rice) is sufficent to use.

For me, temperatures are good, nothing to fear

You should check with software Like Occt2a or Intelburn Test. not with games that do not load the CPU.

thank you guys for your answers.