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More capacity = better temps?

post #1 of 17
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I'm curious if my logic is correct, does an increased amount of water in the loop net you better temps? I would imagine it does, but how much of an effect this has I have no idea.

Currently I have a 150ml EK res but I also have a dual 5.25" XSPC res (not the partitioned model) that I'm not using. Would I see a noticeable drop in temps if I switched these around? Should I use both?
    
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post #2 of 17
i wouldnt say so to be honest its generaly the bigger the rad the more of a drop you will see , Hope this helps
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post #3 of 17
Nope, won't affect temps, just the time it takes to initially reach those temps. Likewise, it will take longer to cool when you switch it off.
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post #4 of 17
The volume of liquid in the loop will not necessarily effect the overall loop operating temperature, but the volume and subsequent surface area of the radiator(s) will.

I would stick to a single reservoir, the EK 150 will be sufficient and preferable (subjective) imho.

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post #5 of 17
Quote:
Originally Posted by SilveR_172 View Post
i wouldnt say so to be honest its generaly the bigger the rad the more of a drop you will see , Hope this helps
no.

Radiator size would only reflect temperatures mostly if you have a complete loop, CPU + GPU's etc. If you're just wc'ing your CPU then the flow of water going through your loop and fans you're using on your radiator would change your temperatures the most. But I could be wrong on the bigger radiator thingum, I didn't see a big difference in using a 240mm radiator and a 140mm radiator on my old rig, 240mm radiator only gave me a couple celcius difference in idle/load.
Edited by EpicPie - 12/24/10 at 11:35am
     
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post #6 of 17
Thread Starter 
Okay I get the picture, thanks to all who contributed.
    
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post #7 of 17
As the person who used the giant fish tank could tell you.. The only thing having MORE water in your loop while keeping everything else the same does for you, is it takes longer to get to equilibrium when your system is on and it takes longer for the water to get back to room temperature when your system is completely off. Once at equilibrium, your temps are EXACTLY the same no matter how much water you have. Your equilibrium point is determined by how much heat you're putting into the water, and how much heat your radiators are capable of removing.

Keeping in mind that the hotter your water is, the easier it is for a radiator to remove the heat (higher water to air delta).. But hotter water means higher temps on the waterblocks as well.

So yea, better temps means either MORE radiators or more powerful fans on your radiators. If your flowrate gets down so bad that your inlet and outlet temps have big deltas, in which case having more flow can help your temps as well as you don't have water sitting around in one spot for too long (indicated by high deltas in inlet and outlet).

You can add radiators to your heart's delight, but know that at a point they will hurt your flow to the point where you get diminishing returns for your money until you invest in more powerful/more pumps.

Adding a bigger reservoir / more reservoirs will only mean it will take a few mins longer to get up to temps.. But temps will be the same.
Edited by Sidicas - 12/25/10 at 8:08am
post #8 of 17
Quote:
Originally Posted by Sidicas View Post
As the person who used the giant fish tank could tell you.. The only thing having MORE water in your loop while keeping everything else the same does for you, is it takes longer to get to equilibrium when your system is on and it takes longer for the water to get back to room temperature when your system is completely off. Once at equilibrium, your temps are EXACTLY the same no matter how much water you have. Your equilibrium point is determined by how much heat you're putting into the water, and how much heat your radiators are capable of removing.

Keeping in mind that the hotter your water is, the easier it is for a radiator to remove the heat (higher water to air delta).. But hotter water means higher temps on the waterblocks as well.

So yea, better temps means either MORE radiators or more powerful fans on your radiators. If your flowrate gets down so bad that your inlet and outlet temps have big deltas, in which case having more flow can help your temps as well as you don't have water sitting around in one spot for too long (indicated by high deltas in inlet and outlet).

You can add radiators to your heart's delight, but know that at a point they will hurt your flow to the point where you get diminishing returns for your money until you invest in more powerful/more pumps.

Adding a bigger reservoir / more reservoirs will only mean it will take a few mins longer to get up to temps.. But temps will be the same.
What he said.
post #9 of 17
Quote:
Originally Posted by Zaiber View Post
What he said.
What I said
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post #10 of 17
more liquid will net you better temps until the liquid reaches equilibrium, so for the first few minutes you will have slightly better temps
 
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