7800 Go now idles at 80 C

Hey all, I have a Dell Inspiron E1705 (or 9400) that is about 3 years old. 6 months ago my 7900 Go died and Dell replaced it under warranty with a 7800 Go. Originally, it idled at 50 C with slow fan and only went up to 80 C playing games. Now it idles at 80 C with slow fan, and only goes down to 72 C with high fan. This heat increase is also very noticeable at the location of the card.

It doesn't seem likely that dust would cause this much of a difference, so maybe there is a problem with the gpu or fan? If anyone has any ideas or advice, I appreciate it.

 

Check the clocks (use GPU-Z, rivatuner, etc) to see if its downclocking properly while idle.

 

I have used RivaTuner to change the clocks, but I ultimately left them stock 250/658. When I noticed the temperature problem, i set it to low power which is 100/658, but it didn't help.

 

Same laptop here and recently I noticed the bottom would get hot enough to about cook food on. Found some instructions online and disassembled it. The fans had big, ole, nasty dust bunnies (2 cats who seem to shed all the damn time did not help). Took it outside, stood way back and let loose with a can of air. Crikey the dust cloud was gnarly.

In the 2yrs I've had it I only sprayed the vents being leery to take it apart. I am glad I finally did what a mess. Anywho I also added an NC2000 laptop cooler from NewEgg, now the bottom barely warms up.

I would "assume" the techs would have cleaned it when replacing the cards but maybe not?

Also wouldn't a 7800 be a downgrade? Does not seem right if it failed under warranty to replace with a weaker part...

 

Either gpu chip is a defective part, just a matter of time before this one goes !

In other words...............temporary fix !

http://www.insidetech.com/news/articles/2748-dell-hp-lists-reveal-defective-nvidia-mobile-gpus

Hate to burst your bubble..................had an HP with the 7600go, that took a crap and Hp said "Kiss off" !

Why I owned a Sager now...............will never buy namebrand again !

 

Im guessing the main problem for you is that there is dust clogging up your laptop, causing the fans to (basically) do nothing. Google the dell service manual for ur machine and clena out the fans or just use a can of compressed air like resu did. Hope this helps.

 

Thanks for the tips, I guess it would be a good idea to clean it out. The laptop cooler also sounds like a good idea, since my laptop has always been fairly hot as a desktop replacement. That article about the defective NVIDIA gpu's is pretty interesting, that might explain what happened to my previous gpu. Without the warranty, I would have had to pay $250 for a new gpu on ebay. I'll blow some air in the vents to see how much dust there might be, then maybe I'll contact Dell about the defective gpus...