G50Vt Temp Problem (9800M)

Hoping someone can give me some ideas.. i know this is an old laptop..

i had done a xbox 360 for windows wireless usb mod (where i embed the unit into the machine) and during this i had to remove the heatsink for hte CPU and GPU.

after putting it all back together i repasted the CPU and GPU and when i started the machine i first noticed that my temps were just runnign higher..

My GPU is idling at 65C and under unigen benchmark hitting 102C.

i took apart the laptop and a reapplied the thermalpost, this time triple checking good contact.. (Artic Silver 5 being used)..

i first boot up and i think i've got it, idling at 45.. but sure enough i boot a game.. exit and let the laptop sit for a while and i'm now idling at 65C again.. unigen benchmark 102C..

anyone have any ideas? before i did this i was idling between 45 and 52 and toping out in Furmark at 95-98..

my next step is to try and beef up the copper heatsink with some copper plating but i really just want to get it working as well as the OEM pasting.. (back from an asus RMA it worked spectacular)

Thanks

 

Probably should try ICD7 for your machine, it's much thicker so don't need to worry about contact issue. But if you do go for ICD7 try not to repaste with it more than 3 attempts, otherwise it might leave scratches on the die as you know how tough a diamond is.

Also how much thermal paste did you use? Sometimes too little results in some area of the die not covered by the thermal paste and that's definately going to build the heat up. And how did you apply the thermal paste? Pea method?

 

Are the screws tight enough? if they are a little loose the copper will not make a good contact and the computer will heat up, i had that problem once, might be worth a check

 

Did you scrape off the thermal pad? Did you clean the heatsink and GPU IHS with rubbing alcohol? You need more paste to replace a thermal pad than you would to repaste, unless you use copper shims (see the sticky and search for "copper"). Without copper shims you may not have enough contact even with thick paste.

If you didn't scrape off the pads and just added thermal paste, there's your problem.

You need to make sure you aligned the heatsink properly and evenly torqued down the screws when you put it back on.

Also, check your CPU temps. If they are massively higher that may be part of your problem, since it is a shared heatpipe.