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Author Topic: GTX 280 overheating  (Read 2292 times)
Bugatti
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May 29, 2011, 08:04:09 PM
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I am mining on a GTX 280 at ~50 Mhash/s at 95°C with poclbm. The stock fan is running at 100%. I have tried reducing clock speeds and changing the -w parameter and I can drop the hash rate significantly but it doesn't reduce the temperature of my GPU.

Does anyone have any suggestions for how to control GPU power with an NVIDIA card? This is going to burn out my card.

Thanks!
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melter
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May 29, 2011, 08:24:53 PM
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solution: don't mine with a GTX 280. it's a waste of electricity.
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May 29, 2011, 08:36:50 PM
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Have you checked your graphics card heatsink? make sure it is clean, clean fan blades and heatsinks. If this fails maybe there is poor contact between the heatsink and chip. replacing thermal tape with paste is always good, you can pick up paste at any electronics store for a few $ doesnt have to be fancy stuff just basic thermal paste works. clean the chip apply thin even film. good luck.

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Bugatti
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May 29, 2011, 08:41:31 PM
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I understand why NVIDIA cards have lower hashrates than ATI and I also have looked into how many hashes I get per joule dissipated. I just wanted to see if it's realistic to actually make any BTC before dumping money into mining.

Thank you - I'll reseat the heatsink with some diamond paste and see what happens
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May 29, 2011, 08:56:14 PM
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http://www.alloscomp.com/bitcoin/calculator.php
this is pretty accurate for larger pool mining.

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Bugatti
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May 29, 2011, 09:56:32 PM
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Went from almost 100°C down to 85°C at 50 Mh/s steady state at stock clocks.
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