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Very high water cooling temperatures

post #1 of 25
Thread Starter 
Hey everybody. I've been wondering about my temperatures for some time now, and I'm starting to think that they're too high.
Here's a list of my parts:

XSPC Rasa cpu block
EK-vga supreme gpu block
Swiftech Microres
HW Labs GTX 240
HW Labs GTS 240
Laing DDC 18 watt pump with XSPC acrylic top
Red Primochill 10/16mm tubing

The GTX 240 has GT AP-15's (at ~1700rpm) in push with shrouds, and GT AP-14's in pull. The GTS 240 has GT AP-15's in pull(at ~1700rpm).

The flow order is res - pump - gts 240 - cpu - gpu - gtx 240 - res

The coolant I'm using is a mix of 70% water and 30% car coolant. The reason I'm using car coolant is that it is anticorrosive. I'm also using a couple drops of algaecide.

And now for my temperatures.

The max for my cpu is 74c, and my gpu is ~45c. That's when I've been folding nonstop for 2 days on both. I'm fine with the gpu temp, but I'm worried about my cpu. Is it not too high for water cooling?

I've come up with some possible reasons for my problem:
- Car coolant not being a good enough coolant. I am unwilling to believe this since a lot of my fellow WC'ers here in Denmark uses it as well.
- Bad TIM. I'm using arctic silver ceramique, but AFAIK it's a good paste?
- My GPU might be dropping too much heat into the loop.

My cpu is @ 4000mhz 1.29V btw.

IF my temps are too high, can you guys help me with how to lower it? I am out of tim so I'll be willing to try something else that isn't thermally electrically conductive. I'll also buy some biocide and concentrated anti-corrosive additive so I can run mainly distilled water.

I'm really lost here.
Edited by ScurK - 3/29/11 at 10:06am
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Dommedagsmonstret
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post #2 of 25
Yeah that is rather high for cpu on water, I would drain it, anti freeze is a very poor conducter of heat. Take it out and just use distilled water and a drop of pt nuke. I would also place a gtx 240 intbetween the cpu and gpu. So basically like this. Res, cpu, 240, gpu, 240, pump. Another thing would be to check water flow, a drop of dye and watch how it circulates in the system.
Edited by Maelthras - 3/24/11 at 5:00am
post #3 of 25
I would just use distilled water (and I do) but I think you may want another set of fans on the GTS. Push - pull all your radiators for best results. Sounds like you need to reapply the TIM - maybe too much or too little? I also prefer separate loops if that's an option at a later date.
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post #4 of 25
shin-etsu x23-7783d for lapped cpu, g751 for unlapped. non electrically conductive, no curing time. apply rice grain size in center of cpu heat spreader. attach cpu waterblock.
post #5 of 25
To be honest those temps sound really reasonable considering the fact you have done 2 days of folding in a row, you need to remember that once your stressing two components on the same loop it can reach high temps.

For comparison my i7 920 on Prime95 reach 65c max, if I run furmark while I do Prime95 it goes up to 75c.
    
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post #6 of 25
If you have algaecide at all then you don't need antifreeze as well. Refill the loop with just a few drops of the anti-algae fluid and distilled water.

My 240 rad is in pull also with my 120 in push/pull and I have excellent temps. Given that AMD runs a little cooler your cpu temps do seem high. GPU looks normal to me, mine loads at 42. Make sure you have that rasa cpu block tightened down enough, but not too much.
Edited by The_Punisher - 3/24/11 at 7:47am
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post #7 of 25
You can't even say an i7 920 and AMD chips's on the same sentence temps-wise, the i7 920 is an extremely hot chip.
    
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post #8 of 25
Quote:
Originally Posted by jclark View Post
You can't even say an i7 920 and AMD chips's on the same sentence temps-wise, the i7 920 is an extremely hot chip.
Yes I know this and even stated it. All I really said was that in my setup using the same cpu block and less rad, I have excellent temps. That's excellent temps for an AMD. OP does not have excellent temps, for an Intel. Clear now?
Edited by The_Punisher - 3/24/11 at 8:05am
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post #9 of 25
Thread Starter 
Quote:
Originally Posted by diane View Post
shin-etsu x23-7783d for lapped cpu, g751 for unlapped. non electrically conductive, no curing time. apply rice grain size in center of cpu heat spreader. attach cpu waterblock.
Thanks man I'll look for that.

Quote:
Originally Posted by tout View Post
you may want another set of fans on the GTS. Push - pull all your radiators for best results. Sounds like you need to reapply the TIM - maybe too much or too little? I also prefer separate loops if that's an option at a later date.
Which fans, and why?
I am out of TIM, but I only apply the size of a rice grain.
Seperate loops not an option.

Quote:
Originally Posted by Maelthras View Post
Yeah that is rather high for cpu on water, I would drain it, anti freeze is a very poor conducter of heat. Take it out and just use distilled water and a drop of pt nuke. I would also place a gtx 240 intbetween the cpu and gpu. So basically like this. Res, cpu, 240, gpu, 240, pump. Another thing would be to check water flow, a drop of dye and watch how it circulates in the system.
Will use another coolant, thanks.
Would you deem it necessary to throw in another rad? Flow is good.

Quote:
Originally Posted by The_Punisher View Post
If you have algaecide at all then you don't need antifreeze as well. Refill the loop with just a few drops of the anti-algae fluid and distilled water.
Well I need antifreeze because it is anticorrosive... had some minor corrosion in my loop when I was just using distilled.


Thanks for all the answers so far, guys.
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post #10 of 25
Quote:
Originally Posted by ScurK View Post
Well I need antifreeze because it is anticorrosive... had some minor corrosion in my loop when I was just using distilled.
Really? Not trying to argue but I don't see how you would get corrosion. All the components you listed are copper, unless there's something I don't know about those rads. But if its an issue then use the antifreeze. It probably doesn't hurt performance that much anyhow.
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