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Top GPU still about 5c hotter

post #1 of 7
Thread Starter 
Just want to make sure this is normal. I just got my loop going (albeit a noisy pump) and decided to turn the computer on while I wait for a resolution to my noisy pump. I down clocked everything to stock just to ensure I do not get a temperature spike in case I installed something incorrectly. So far so good.

I noticed bottom GPU is at around 26c idle, but top one is still around 31c idle. So, top cards still run hot even in a watercool setup?
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post #2 of 7
Well there will always be slight differences in GPUs and even the thermocouples used to measure temps. 5C is close enough to point towards variances in manufacturing. I also wonder, if much like recent Intel processors, if the thermocouples used are tuned to be more sensitive at higher temps since those are what are actually important. I'd rather they be accurate to +/-1C at 100C and +/-10C at 20C instead of the other way around.
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post #3 of 7
Completely normal
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post #4 of 7
Yeah my 5970's were around 50/60 with the stock now they top 40c under full load. Water cooling is a great thing.
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post #5 of 7
I see you have one tube connecting your cards; if you add a second it brings the temperatures closer.
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post #6 of 7
Thread Starter 
Yes, I do have them in serial. I will wait till I get a new pump to drain out the loop and do a parallel. If 5c is normal, I will leave it as is for now. Thank you all.
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post #7 of 7
Card 1 does do more work than card 2.
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