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What's the word on Heatkiller gpuX3 waterblocks? - Page 2

post #11 of 17
The Heatkiller blocks were proven to be better than the EK blocks, so good on you there smile.gif
http://www.hardwaremax.net/wasserkuehlung/wasser-kuehler/426-test-watercool-heatkillerr-gpu-xs-79x0.html?start=4

4~c lower than EKWB 7970
post #12 of 17
Thread Starter 
the phobya 200mm rad, 6 new barbs and tubing are all ordered... excited about getting this stuff added to mah loop biggrin.gif
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post #13 of 17
Quote:
Originally Posted by Faded View Post

do you guys think it matters if i have the 200mm rad, after the gpu block?
it seems like the water coming straight from the CPU to GPU would already be warmer and therefore not draw out as much heat? It makes sense to me, to have rad-cpu-rad-gpu-res as the best order, but i am not sure....

At 1gpm, it takes ~260w of heat to raise water by 1C. Your CPU, even highly overclocked, isn't going to be putting out that much, so if you go straight from CPU to GPU the water will be less than 1C hotter than if you had a rad between them. I'd go straight from CPU to GPU for cleaner tubing, the 1C isn't worth worrying about. The only time you need to start considering order for performance reasons is if you have a fairly extreme setup, like a dual CPU and quad GPU setup, where you're putting more than 1000w of heat into your loop. At that point, if there's no rad between any of the blocks, the last thing in series is going to see 3-4C hotter temps, but even that isn't enough to be a dealbreaker.
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post #14 of 17
Thread Starter 
Quote:
Originally Posted by bakageta View Post

At 1gpm, it takes ~260w of heat to raise water by 1C. Your CPU, even highly overclocked, isn't going to be putting out that much, so if you go straight from CPU to GPU the water will be less than 1C hotter than if you had a rad between them. I'd go straight from CPU to GPU for cleaner tubing, the 1C isn't worth worrying about. The only time you need to start considering order for performance reasons is if you have a fairly extreme setup, like a dual CPU and quad GPU setup, where you're putting more than 1000w of heat into your loop. At that point, if there's no rad between any of the blocks, the last thing in series is going to see 3-4C hotter temps, but even that isn't enough to be a dealbreaker.

awesome man, thank you for clarifying. I knew there would be a slight discrepency but i didn't realize how slight it actually was. thumb.gif

+rep
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post #15 of 17
post #16 of 17
Sorry for being the necromancer of this old thread. But anybody know the restriction of the Heatkiller GPU-X3 universal blocks? What sort of pressure drop can I expect in my loop from using one of these. I was planning on using the EK-Supremacy blocks which have a restriction of about 0.7psi. But the EK is out of stock. And I can't find anything on these Heatkiller blocks?
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post #17 of 17
Quote:
Originally Posted by Lothriel View Post

The Heatkiller blocks were proven to be better than the EK blocks, so good on you there smile.gif
http://www.hardwaremax.net/wasserkuehlung/wasser-kuehler/426-test-watercool-heatkillerr-gpu-xs-79x0.html?start=4

4~c lower than EKWB 7970

great block indeed

My 7970 with heatkiller block would always have ~10C temp difference versus the EK biggrin.gif
  
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