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Radiator sizing?

post #1 of 5
Thread Starter 
I was doing a ton of research for a upcoming water cooling build and I came across a radiator sizing photo. I was wondering how accurate it is...



The build would consist of the following:

i7-4820k overclocked to 4.5GHz, 1.35v Vcore voltage
Four (4) R9-290x's

I am mainly concerned about running @1200 rpm, so that would mean I would need either two (2) 560mm or three (3) 480mm radiators.

Any help or clarification would be greatly appreciated!

-Geran

UPDATE: Decided to go with four 290x's instead of three. Also I will be using a Case-Labs case.
Edited by Geran - 11/3/13 at 8:16am
    
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post #2 of 5
I think your chart is a little on the generous side in regards to the amount of watts dissipated at a respective RPM. I usually use Martin's when it comes to anything water cooling before I check anything else. You might know this already, but general rule is 120mm per component plus an extra 120mm; however, I do 240mm per component plus any amount extra possible so that I have as much overclocking headroom as possible since I tend to push everything as far as I can. If I were in your place, I would feel confident with two 480s since you are also comfortable with a higher RPM than most people use; furthermore, setting them up in push/pull nets you up to 30% more cooling potential. Depending on the case you will purchase or own, if you can fit more radiators then more power to you. There is never such a thing as radiator overkill, especially here at OCN.


Hopefully more knowledgeable and experienced people can guide you alongside, but I will be around to help with what I can.
Edited by hiarc - 10/31/13 at 7:38pm
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post #3 of 5
O.O That's one heck of a lot of video card! What are you doing?! Aircraft flight simulators or something?
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post #4 of 5
I have never had luck with more than 2 cards in CF so if you do, let me know......

So we have 300 watts x 3 + 200 or 1100 watts

try this.... it's a spreadsheet I put together based upon data on martinsliquidlab site, extrapolated to cover common sizes. If ya wanna do all that Id start thinking a 9x9 120. This is based upon a target design of Delta 10C.

Aquacool Rad Estimator.XLS 29k .XLS file

A UT60 @ 1250 rpm in Push / Pull:

76 watts for a 120x120 / 152 watts for a 120x240 / 227 watts for a 120x360 and 303 watts for a 120x480
103 watts for a 140x140 / 206 watts for a 140x280 and 309 watts for a 140x420

Based upon that, you'd need up to four rads ..... but most peeps look for a middle ground.... could prolly do fine with 2. Of course this would make things easier.
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post #5 of 5
Thread Starter 
Quote:
Originally Posted by hiarc View Post

I think your chart is a little on the generous side in regards to the amount of watts dissipated at a respective RPM. I usually use Martin's when it comes to anything water cooling before I check anything else. You might know this already, but general rule is 120mm per component plus an extra 120mm; however, I do 240mm per component plus any amount extra possible so that I have as much overclocking headroom as possible since I tend to push everything as far as I can. If I were in your place, I would feel confident with two 480s since you are also comfortable with a higher RPM than most people use; furthermore, setting them up in push/pull nets you up to 30% more cooling potential. Depending on the case you will purchase or own, if you can fit more radiators then more power to you. There is never such a thing as radiator overkill, especially here at OCN.


Hopefully more knowledgeable and experienced people can guide you alongside, but I will be around to help with what I can.
Thanks mate. That's good to know that it is more generous than really needed. As for the case, I'll be using a Case-Labs case which is still yet to be determined. Trying to find the best one to meet all my requirements.

Quote:
Originally Posted by bombastinator View Post

O.O That's one heck of a lot of video card! What are you doing?! Aircraft flight simulators or something?
No flight simulations for this computer. I already have a Sim Racing computer built that can handle basic flight sims as well.

Quote:
Originally Posted by JackNaylorPE View Post

I have never had luck with more than 2 cards in CF so if you do, let me know......

So we have 300 watts x 3 + 200 or 1100 watts

try this.... it's a spreadsheet I put together based upon data on martinsliquidlab site, extrapolated to cover common sizes. If ya wanna do all that Id start thinking a 9x9 120. This is based upon a target design of Delta 10C.

Aquacool Rad Estimator.XLS 29k .XLS file

A UT60 @ 1250 rpm in Push / Pull:

76 watts for a 120x120 / 152 watts for a 120x240 / 227 watts for a 120x360 and 303 watts for a 120x480
103 watts for a 140x140 / 206 watts for a 140x280 and 309 watts for a 140x420

Based upon that, you'd need up to four rads ..... but most peeps look for a middle ground.... could prolly do fine with 2. Of course this would make things easier.
Yeah easier would be nice but it isn't always better. Based on the case options, I could handle four radiators in two loops (one for video cards & one for everything else). That does make it more complicated.

Y'all's help is greatly appreciated!
    
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OSMonitorPowerCase
Windows 7 Professional I2757FH CAPSTONE-550-M S210-002 
  hide details  
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CPUMotherboardGraphicsRAM
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VTX3MI-25SAT3-120G ST1000DM003 IHAS124-04 Corsair H55 
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