CPU temp increased days after new heatsink install

[vinh]

I am using a Gigabyte GA-7DPXDW-P with a pair of AMD MP 2400+ processors. The CPU temperatures were Originally around 55 and 60 degrees Celcius for CPU-0 and CPU-1 respectively with the stock AMD heatsinks and fans that came with the CPUs.
I recently installed a pair of Vantec AeroFlow VA4-C7040 heatsink/fan combo on my dual cpu's. I used heatsink compound that I bought from a local CompUSA store that had the label, "Artic Silver" (not/not "Artic Silver III") on the package. The CPU temperatures immediately dropped to around 39 and 43 degrees Celsius for CPU-0 and CPU-1 during the first three to five days after I installed the Vantec fan/heatsink. However, five days after the Vantec fan/heatsink installation, the cpu temperatures climbed to 49C (CPU0) and 56C (CPU1). The two CPUs' temperatures have stabilized at those numbers, but I don't know why they would have risen by ten degrees Celsius like that. Can anybody offer any tips or advice as to why the temperatures would have gone up -- especially when they were fine for almost a whole week after the new fans/heatsinks/heatsink compound were installed?

I used the instructions from Artic Silver's webpage to apply the heatsink compound.

I'm using an Antec Truepower 480W power supply; the case is a Lian Li PC6002COM case with plenty of airflow.

I'm new to the world of heatsink and cpu coolers...

 

[error_911]

leads me to believe that there was some sort of residue left on the CPU or heatsink surface which affected the contact between both surfaces... RE-APPLY ! Make sure that you clean the CPU and heatsink's surfaces with rubbing alcohol and a cotton swab or gaus pad and let it DRY for a good 15-20 minutes.. and don't touch either surface. Then you can re-apply and you should be fine.

<b>I like big butts - and i <i>can</i> lie</b>

 

[LCARS]

And make sure that the layer of Artic Silver is paper thin.