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Heating Issues with Nvidia BFG 9800 GT qgb

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July 31, 2009 6:13:01 AM

so i just finished building my new budget gaming pc, and i was playing around with it for alittle bit. I downloaded TF2, and when i went to play it , as soon as i joined a match, the whole system restarts, then it restarts again and again. I shut it down, and think i'm just tired and crazy. I come back the next day, install fanspeed, and see that when i start TF2 or Neverwinter Nights 2, the GPU goes from around 48 degrees Celsius, to around 70 and up. I'm still not sure why that is resetting the system, Because i went into maintenance and made sure auto reset was off. Does this happen to other computers when the GPU overheats? Is my card defective or do i just need bette air flow? ( I have 5 fans in the case 2 -120s and 3 -80s). I even brought the computer down to the cold basement and it still reset, I'm stumped, i read reviews saying the card ran hot, but not saying that it ran hot enough to restart the system every couple seconds.
Any suggestions or diagnoses would be GREATLY appreciated
o rite
my build (if this helps at all):
case-RAIDMAX AZTEC ATX-619WUP Black/ Blue SECC Steel ATX Mid Tower Computer Case 500W Power Supply - Retail

GPU-BFG Tech BFGE981024GTOCE GeForce 9800 GT OC 1GB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card ... - Retail

Processor-AMD Phenom II X4 940 Deneb 3.0GHz Socket AM2+ 125W Quad-Core Black Edition Processor Model HDZ940XCGIBOX - Retail

Motherboard-GIGABYTE GA-MA790X-UD4P AM3/AM2+/AM2 AMD 790X ATX AMD Motherboard - Retail

Memory-CORSAIR 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model TWIN2X4096-6400C5 - Retail

Hard Drive-Seagate - Barracuda 1TB Internal Serial ATA Hard Drive
July 31, 2009 7:24:15 AM

70C GPU should not cause this. Much more likely the cheap PSU.
July 31, 2009 12:57:01 PM

^+1

someone should make a sticky on PSU tiers
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August 1, 2009 2:31:41 AM

I just tested the case with a radeon x1600 512 card, and in TF2 it never reset,
so this makes me think the BFG card is not getting enough cooling.
What type of cooling unit would be best for this?
August 1, 2009 6:11:36 AM

I'm pretty sure the 9800GT will hit over 90C without issues. If the fan is spinning it shouldn't get that hot, unless some voltage regulation has failed.

You can buy an air cooler for it:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
That's a good one but I don't think it's a good bet right now.
August 1, 2009 6:01:29 PM

Now i tried the radeon x1600 512 and after around an hour of playing neverwinter nights 2 , it reset. When we opened the case and checked the card, it basically burned to the touch. Also, if the problem was the power source, wouldn't i see signs of the power source being overworked? When i checked it, it was not very hot, and there was no smoke or anything.
August 1, 2009 6:59:33 PM

Video cards get hot. All of them. A very well cooled GPU might only hit 60C, but it's not unusual for them to hit 90C, especially older ones.

90C = 194F

Even a decent PSU will fail around 50C. A cheap one might go at 30C.
August 1, 2009 10:11:22 PM

If the PSU even felt warm it was hot by PSU standards, hot to a person is about 150F which is about 65C which is way too hot for the PSU. If it even felt warm then it was probably too hot, if its below your body temperature it will feel slightly cool to you so any metal below about 37C feels cool so if it feels warm its rather toasty for the components in there.
!