Water cooling two 8800 GTX's
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Soldato
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out of interest how hot is the water, and whats the idle temp?
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2 x gtx and cpu is getting pretty hardcore.
OcUK not very good on watercooling, you might need to look elsewwhere for a better system.
It is not going to be cheap either.
OcUK not very good on watercooling, you might need to look elsewwhere for a better system.
It is not going to be cheap either.
tbh honest id go for custom water cooling rather than a kit, so much more quality for your money and complete flexability in upgrades too!
id go for two blastlow siberian VGa blocks with the 8800gtx cooling plate, whatever cpu block you have atm if you dont d-teks fuzion block, the laing D5 pump from swiftech and a triple or quad radiator! personal preference see me say black ice! but up to you, money will be an issue to though
id go for two blastlow siberian VGa blocks with the 8800gtx cooling plate, whatever cpu block you have atm if you dont d-teks fuzion block, the laing D5 pump from swiftech and a triple or quad radiator! personal preference see me say black ice! but up to you, money will be an issue to though
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I'm using a Reserator 2 to cool an overclocked 8800 GTX (no other hardware in the loop).
Idle temperatures: 40 / 33 °C (core / ambient) [winter]
Load temperatures: 64 / 53 °C (core / ambient) [measured in summer - NVidia's Smoke demo]
A fanless WC system will function much better at a higher delta T, so with increased heat load the temp will not go up as much as one would think (twice a heat load will not result in twice the delta T of the hardware, the relation is not linear).
So, adding a second 8800 to the loop will not increase the hardware temp another 35 °C or so. In the end you will just have to try, but I doubt the 8800 temps will exceed 75 °C (which is still slightly lower than with stock air cooling).
For silence, go hybrid... I'm air cooling the CPU with a Thermalright 120 E and cooling the GPU with a fanless WC setup.
A CPU can easily be cooled with a top range heatsink. Mine is on full load all the time (folding) and the fan is spinning at 800 RPM.
A high end GPU has more heat output, but can also withstand a higher temperature. It is hard to aircool with low sound emission though.
Combine the two (CPU + GPU) and the CPU will "heat up" by the heat output of the GPU because the TDP is much higher. So I didn't want my CPU to be in the same loop as the GPU. Then it made more sense to just aircool the CPU instead of adding another reserator.
Idle temperatures: 40 / 33 °C (core / ambient) [winter]
Load temperatures: 64 / 53 °C (core / ambient) [measured in summer - NVidia's Smoke demo]
A fanless WC system will function much better at a higher delta T, so with increased heat load the temp will not go up as much as one would think (twice a heat load will not result in twice the delta T of the hardware, the relation is not linear).
So, adding a second 8800 to the loop will not increase the hardware temp another 35 °C or so. In the end you will just have to try, but I doubt the 8800 temps will exceed 75 °C (which is still slightly lower than with stock air cooling).
For silence, go hybrid... I'm air cooling the CPU with a Thermalright 120 E and cooling the GPU with a fanless WC setup.
A CPU can easily be cooled with a top range heatsink. Mine is on full load all the time (folding) and the fan is spinning at 800 RPM.
A high end GPU has more heat output, but can also withstand a higher temperature. It is hard to aircool with low sound emission though.
Combine the two (CPU + GPU) and the CPU will "heat up" by the heat output of the GPU because the TDP is much higher. So I didn't want my CPU to be in the same loop as the GPU. Then it made more sense to just aircool the CPU instead of adding another reserator.
I though all stock 8800gtx fans where very quiet
(My EVGA 8800gtx was)
Err, no, mine are quite noisy.
Andi.