Crazy temps after heatsink "upgrade"

[Blitzen]

Load temps after night of folding:


Idle temps from 2 weeks ago:


Could it just be the weather?

The weather is the likeliest thing i would say.

My idle and load temps have increased by 4-5 degrees since it turned warmer/humid.

Mobo and gpu hit 47C and 71C respectively whilst running ATI tool!!!!
This is with the case door off too!!!! and the window is blowing cool air in to room and is right next to the pc!!

There no way this pc will be stable if I had the door on...

SIM
In your sys specs it says 'Very dusty Antec Sonata'.

Is it very dusty inside aswell? If so, there the problem lies fella.

[SiM]

Well it used to be dusty, but it is cleaner now

[SiM]

OK well I changed my 9800gtx for a 7600gs and the temps have plummeted. It is a bit cooler here in London than it was in my room at uni (small room gets hot easily)... but even accounting for that temps are comfortable. I might take the thermalright chipset cooler off, and stick the zalman back on with the zalman bracket, then I can use the thermalright one on my P5K

Edit: actually it can't go on the P5K as that all the heatsinks are joined up