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A second loop for a GTX 480

post #1 of 5
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Im thinking of maybe adding a second loop to my rig. Would a single 140mm rad be enough to keep a single GTX 480 temps under ~60C during full load?
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post #2 of 5
It is mine and many other OCN member's opinion that dual loops are not needed. You may be able to just add your gtx 480 to you existing loop. That does depend on your existing rad's size and pump though. If nothing else, adding a 140mm rad with a good fan should be enough to supplement your existing loop for the gtx480 addition.
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post #3 of 5
Thread Starter 
It wont aethetically look good. I need second loop lol
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post #4 of 5
Quote:
Originally Posted by Timechange01 View Post
Im thinking of maybe adding a second loop to my rig. Would a single 140mm rad be enough to keep a single GTX 480 temps under ~60C during full load?
If your fans and rad are good enough.

My reasoning is that a gtx480 has a tdp around 250W (google "gtx480 tdp"). I don't have data handy on a 140.1 so I take my data from skinnee labs's testing of the thermochill PA140.3.

To make that work, triple your head load to 750W since you are using the triple rad 120.3 chart. Go to 750W on the X axis. If you go to the 1372 rpm fan, you see you can cool the gtx480 with a delta T of 13 or 14, which is not bad for an isolated GPU card (no CPU) that gets into the 90 C range with stock cooling.

Skinnee probably used this fan
but you can use this high speed to get more ventilation of your radiator if you wish and lower load temps of your GPU. Or you may want to do the medium speeds in push + pull.

Some of this may depend on your tolerance for noise or willingness to use a fan controller but I think you can do it if you wish. Good luck.
    
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post #5 of 5
If you really want to waste money on a second loop, by all means go ahead. Just note that it won't give you much better temperatures than a single loop.

A 140mm radiator should keep a GTX 480 semi-cool, although it won't be ideal. What fan are you going to put onto the radiator?
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