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Is this decent water temperature? - Page 5

post #41 of 58
You will notice that fans can become much noisier when the flow is restricted by a radiator. If you can't find 140 mm fans that you like you could always use a converter/shroud with 120 mm fans like Gentle Typhoons.
 
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post #42 of 58
Thread Starter 
I have 2 GT's 1850 and one 1450. Perhaps I should go into that GT group buy here on this site, since I need 6. Shipping might be a concern though.

What is a good static pressure for push pull configuration?

Would these be good?
post #43 of 58
Quote:
Originally Posted by NorxMAL View Post
I did all this to get a silent system with some cooling power and yet be quiet, and a little original and creative

But these fans are case fans, they don't provide much static pressure if thats the right term here. Case fans are designed for not much air resistance through the case. But I thought that since these fans were so big, that might not show up as a problem.

So I obviously don't get good performance like how it's now. It could be that the radiator has air or that the dye which was in the system before has degraded the dissipation performance of the radiator in some way.
IMO, if you are happy with the sound levels, and don't plan to get into things like folding 24/7, I'd leave things configured the way they are.

You are getting better temperatures at your overclock settings than you would would with air cooling using noisy high speed fans.

Your system will never see extended periods of full CPU and GPU use while gaming, so as long as it is maintaining reasonable GPU and CPU temps, I wouldn't worry about it to much.

I recommend ditching the dye though, no good can come from it.

If you ever decide to take up folding, you will need to move a LOT more air through the radiator.
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post #44 of 58
Thread Starter 
I'm not happy with the sound levels when the fans are on full.

I'm trying to get the stupid dye out of the system, but it comes back
But it seems that my best bet is going for 140 or 120mm fans when it comes to this usage, considering performance/silence ratio.

I have fan controllers too.

And those Phobya 140 and 180mm fans suck really bad from a review I read.
Edited by NorxMAL - 5/24/11 at 5:41pm
post #45 of 58
Actually a delta of 6C from ambient to water may be because of measuring ambient outside the case instead of in front of rad...yet blowing heated air from inside the case to cool the rad. In other words his delta is not 6C, it is likely 2-3C at idle, since if ambient is 24C outside case, it will be 3-4C higher inside case near intake of rad. I have measured this with 10 accurate dallas probes, multiple times with multiple configurations, and even with fast cool airflow from rear and front, the mosfets, etc on mobo will heat the air used for intake on a rad set up top as exhaust, and temps are always 2-3+C higher than outside ambients.

You can drop your water temps and hence cpu and gpu temps by 3C by reversing you air flow through rad and using actual 24C ambient temps to cool your rad, instead of 27-28C temps above your mobo at cpu/gpu load. If your air to delta is 5C or better, all temps inside case are better by using top rad as intake, cpu and gpu ~3C lower (water is 3C lower). Once delta air to water gets to 12C or so, cpu/gpu temps are still 3C lower, but then mobo/nb etc can be ~3 or so higher from heated rad air.

But also OP is ? max loading gpu/cpu at same time, which never happens to test delta, perhaps use 3dmark etc.

Below pic is loaded cpu, measuring cpu, gpu nb, case, etc with top rad as intake vs exhaust (see my setup avatar) at max fan speed then 900 rpm quiet fan speed.
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post #46 of 58
Thread Starter 
I will try that

So I should post results from only running LinX?

Ok, so I have some new results. I turned of hyperthreading and added a Scytle GT 1450 to blow fresh air into the case at the rear.

10 minutes runtime, idle ambient : 24.2c and Water 28c
Load ambient 25.4c Water 35c

Max Cpu got to 67c, which didn't show up much.

Also, drawing air from the top of the case would benefit from direct fresh air and that fans performs better at blowing than pulling air if I'm not mistaken

I also think I can lower voltage on the core with no HT
I think that the GFlops got low value because I stopped it before it came up, but with HT turned off, I got better GFlops running alone than before

Edited by NorxMAL - 5/25/11 at 2:48pm
post #47 of 58
Thread Starter 
But is pulling air from the top of the case with a top mounted radiator common?
post #48 of 58
NorxMAL we have similar set ups, when I test with OCCT my CPU temps will hit 60 c.
with a room temp around 72 F., my rad. is mounted out side of my case right now

The biggest diff. between our systems is the CPU block
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post #49 of 58
Thread Starter 
I must have done something really wrong with the my cpu block, shall the block and top be totally tighten up hard?

I think the spacers between the back bracket and the block hinges may be a tiny bit too long, so perhaps I should grind it a tiny bit shorter.

I think I gonna remove all gear inside, gfx cpu, then run the whole loop with hot water from the shower hose and hose the tap outlet into the drain, so I get this stupid dye out. It reappears after several drains, vinegar hot water etc.

Then rinse it all with battery water, and refill it after that.

So if the water is clear after that, I will change the tubing again. Sell the excess gear I have with those hoses so they can clean it

If the block still under performs, I will sell it and get a new block.

Damn this is addictive and expensive, but it is fun
post #50 of 58
Quote:
Originally Posted by NorxMAL View Post
But is pulling air from the top of the case with a top mounted radiator common?
It is for me. Several on different forums always use cool intake as well, just havent seen as many setups to know how common on this forum, but like most forums, probably see it common both ways. But you will get 2-3C better cpu/gpu/water temps regardless. Just expel the hot air out of the rear of computer. If you have additional rear exhaust, helps as well, ie vented pcie slots.

If your concerned with "hot air rises reasoning", in testing, it is superseded by cool air cools rad better than warmer case air, and fan pressure far exceeds heat convection.

Linx is an intermittent load, so not good for temp comparisons. Just use prime, and have it check same ffts over and over to get constant load for better comparisons.

There is nothing you are likely to do that will load gpu and cpu 100% at same time (aside from purposely doing so), hence load one then the other for testing. run prime for cpu load, then gpu or loop 3dmark etc. That will give you max real world use air to water delta, cpu temps, gpu temps.

Edit: and I agree with slickwilly. Vapor in testing got 8C worse temps, here scroll down, with your cpu block xt, then more modern once, though he tested at 218W. you will get roughly half, 4-5C better temps at your wattage by upgrading cpu blocks.
Edited by opt33 - 5/25/11 at 4:16pm
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