GX623 Fan hits higher RPM only when GPU is @ 105 degrees C ?

Hi, I've been doing some tests on my GX623 laptop. All clocks are at default, my motherboard BIOS is v1.0s and am stressing the GPU with Furmark. I notice that the main fan reaches higher rpm(can't tell how many %, I'd assume 90) only when the GPU has reached an unacceptable temperature of 103-105oC(read with RivaTuner) and the CPU- 88oC(read with speedfan). First of all I'd like to ask if this is common for other GX623s? If not then maybe it's my bios ? Either way, I do not believe that the laptop has been designed this way and would appreciate any help.

Bleh, I decided to open the lappy and see what's up inside. It's 1 year old so I thought that there might be some dust in it- there was. The was so much, that the fan was unable to blow the air out at all. Anyway, I cleaned up the heatsink and then decided that it'd be best to change the thermal paste as well. As I was doing that, I noticed that the CPU's thermal paste was rock-hard, there was no way that was conducting heat properly. Anyway, after having replaced all the thermal paste (with some not-so-great Spire Silvergrease pro) and having cleaned up the heatsink and fan, I decided to do some testing. Temperatures after stressing with Prime 95 and Furmark for 30 minutes: (RivaTuner)GPU:80oC (SpeedFan)CPU with turbo on: core1: 88oC core2: 85oC. Now, I haven't measured the CPU temperature before, but this seems a bit on the high side... Has any other GX623 owner done CPU heat measurements with turbo on ?

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If you live near an Apple Store, make a Genius Bar appointment to have the computer tested. Supposedly there is no charge for testing. Use 2nd link if not near an Apple Store or aren’t in the US.
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