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How many degrees above ambient for the water is ok ?

post #1 of 18
Thread Starter 
As the heading says. How many degrees above ambient at full load can the water go before the loop can be called ineffective ?
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post #2 of 18
When I'm running full load, the water in my loop is about 10C above ambient room temp.
post #3 of 18
Quote:
How many degrees above ambient at full load can the water go before the loop can be called ineffective ?
That depends what your ambient air temp is. In most normal cases, I'd say the max air/water delta you'd be ok with is around 18C. Whether that is good enough or not for the overclock you want to do is a different story.
post #4 of 18
You want ~ 10C Delta. Anything over it means you dont have enough RAD or running low speeds fans. Anything under it means you have spend a lot of money on the loop.
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post #5 of 18
Thread Starter 
My temps are good GPU's max 45 and CPU is great 74 @ 5 ghz IBT as it is delided. Was just curios about ambient delta of water temp. At what point does the delta indicate its time to clean the dust out of the rads.
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post #6 of 18
Quote:
Originally Posted by ZealotKi11er View Post

You want ~ 10C Delta. Anything over it means you dont have enough RAD or running low speeds fans. Anything under it means you have spend a lot of money on the loop.
biggrin.gif
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post #7 of 18
Thread Starter 
Quote:
Originally Posted by ZealotKi11er View Post

You want ~ 10C Delta. Anything over it means you dont have enough RAD or running low speeds fans. Anything under it means you have spend a lot of money on the loop.

Or you have headroom biggrin.gif
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post #8 of 18
I'm going to point out that he asked what the maximum is, not the optimal.

8C-10C tends to be the sweet spot between good cooling and diminishing returns on extra radiator surface area. A stock-clocked chip would be able to be cooled well enough up to about 18C-20C air/water delta though, considering a 24C or less ambient air temperature.
post #9 of 18
10 is a good target to allow ambient fluctuations. 5 for the extremist. 20 can get you by but really bumping up against air cooling capabilities and could hit limits when ambients are high.

Also depends on what you load with and how you throttle the chips. You can get by with less using turbo modes if your loading is short bursts. My 3930K at 4.5 draws upwards of 180W under prime after 20 min and at idles it only draws 25W. Encoding HD video is probably about the only thing that loads the processor that hard for an extended period.

IMO, if you are going to bother with the hassle of water cooling, you might as well add in as much radiator as you can, it certainly doesn't hurt and can afford more silence while still retaining performance. I like the 5c goal, but would be happy at 10c as well.

You might toss the benchmark and torture testing tools and spend more time doing what you do to actually stress the system.
    
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post #10 of 18
Quote:
Originally Posted by martinhal View Post

My temps are good GPU's max 45 and CPU is great 74 @ 5 ghz IBT as it is delided. Was just curios about ambient delta of water temp. At what point does the delta indicate its time to clean the dust out of the rads.

When your components start getting too hot.
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