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question about cpu and gpu temps

H

Huskerwr38

Member
I don't know much about cooling, but I have an K8T Neo2 board, AMD64 3500, Nvidia 6800GT 256mb, 2gigs of RAM, anyways, my CPU temps run at about 38c and my gpu is at about 83c at idle. I have 2 120mm fans and thats about it. I don't have anything OC or anything. Underload my gpu temps can get up to 110c. My ambient temps are at about 48c according to my graphics card. Sys temp is at 40c. Should I be worried?
 
My PSU is DeVanni Real Ultra Cool 468W, model number is DP-468FL. Thats what it says on the box. It has like 4 fans on it. I'm looking to get a new HS and a new cooler for my VGA. Since my temps are very high. I've read and researched a lot of different stuff, but it doesn't make sense to me.
 
Thanks for taking the time to research it. But, is it really my PSU that causes my video card to run at such high temps? I'm thinking about buying a zalman VF900-Cu. And mabye a Thermaltake Big Typhoon for my cpu.
 
Because I can't find specs on the power supply, it is an unkown, but generally, some pretty poor power supply makers stay off that list. Generally if the power supply maker has nothing to hide, the specs are out front and even when they do have something to hide you can find most of it and have to go to the fine print to notice shortfalls. But in the end, I can't give you a 100% answer on that due to the lack of information.

I can tell you that you generally get at least most of what you pay for in a power supply. I can tell you the more modern video cards are more power hungry, but I'm not up on exactly how much power your card uses. If you will find out, I can advise better on how much to spend on a power supply.

You see, if the power supply can't keep up in voltage, it will try to make up the watts needed to run a given piece of hardware in amps and that means heat. Go to the general forum here and look for the power supply sticky at the top of the forum. there are freeware programs that will keep a record of your voltages under load. See what voltages you are getting and pay special attention to the + 12 volt values and report back your results.

Keep your credit card in its holster in the meantime. No sense in jumping before we get this problem diagnosed!
 
I'd be a bit concerned about GPU temps, but... are you getting artifacting?

CPU temps are perfectly fine.

Perhaps touch your GPU heatsink with your fingertip when it's running to see if it feels super hot. If so, then perhaps something inside your case is blocking air to the video card area or the video card fan isn't up to snuff - perhaps clogged with dust, dying bearings, stuck at low speeds, who knows. The fan in my Sapphire Radeon X850XT never ramps up from lowest speed and I've had games start to artifact until I used ATITool to manually increase fan speed.

If the GPU heatsink doesn't feel that hot but it's still reporting high temperatures, then either the reporting or sensor is off, or the heatsink is not making proper contact with the core of the GPU. Haven't heard it in regards to a 6800 series, but I've seen a number of threads in the Video category about 6600GT cards that had overheating problems and turned out to be the GPU heatsink not making proper contact. For some, reinstalling them (and using properly applied heatsink paste) fixed the problem, for others it took a new GPU HSF.

As for power supplies... there are any number of reasons for a "brand" to make the "do not buy" list at Hardforums. Perhaps the manufacturer "overrated" the output, or rates output at lower than normal testing temperatures, or has had quality control issues... there can be any number of possibilities. And yes, one possibility is that the PSU is utter crap. Out of the list of "Un-recommended" here are my takes. If not mentioned, that means not enough data one way or another.

Even I wouldn't use:
Deer
L&C
Powmax (they USED to be okay back when sold under Leadtek name)
Eagle
Allied
Turbo

Kinda okay but doesn't put out rated power:
Aspire
InWin/Power-Man (I think they're the same)
Kingwin
Raidmax

Decent but maybe bad reputation or QC:
Thermaltake
Ultra

 
Your GPU temps are really really high. Do you get artifacts or any video corruption when playing games? I would assume so because those temps are way too high. I would think it wouldnt even work at such high temps. Do what Zap says and check the heatsink. Maybe just reseating it will work, maybe you need a new one.
 
Yes sometimes I do get artifacts, I ordered a Zalman, hopefully that will help. Also, since my GPU has been under high temps, can it be damaged? Even though it's working fine.
 
In my opinion there are two likely possibilities for the abnormally high temps you're seeing.
1. The temperature sensor is not calibrated correctly and is misreporting the temps. The temp sensors they include on video cards and motherboards tend to be inaccurate and are only meant to give a general idea of the operating temperature within a high degree of tolerance.
2. As Zap already stated, there could be a problem with the heatsink not making proper contact with the GPU chip. Perhaps the manufacturer did not apply the thermal compound correctly.

If I were to bet on this I'd put my money on #2. I think that once you install the Zalman cooler you will see lower temps and as an added bonus, much less noise. I use the Zalman VF-700cu on my 6800GT and noticed a temperature/noise decrease when I switched to it.

Out of curiosity, which brand is your 6800GT? I had a similar experience with a Gigabyte 6800GT a year and a half ago. (EDIT: NM, I just saw your sig.)
 
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