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At what point do i need to go dual pumps?

post #1 of 10
Thread Starter 
Currently my loop is.

Res-pump-cpu-rx360-7970-7970-7970-rx480-ex240-res

I just added the 480 and my temps havent really changed all that much. I know i still have some air in the system that im working out but i expected more when adding almost 100% more radiator. Im wondering if my laing d5 is strugling with all of this by itself

Full load temps on all 3 cards is around 48-55 degrees 1 to 3rd.

Any help or ideas would be great
    
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post #2 of 10
What's your flow rate? Any idea? Sure does seem like you're having great temps to me.
 
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post #3 of 10
Quote:
Originally Posted by wrxxx View Post

Currently my loop is.

Res-pump-cpu-rx360-7970-7970-7970-rx480-ex240-res

I just added the 480 and my temps havent really changed all that much. I know i still have some air in the system that im working out but i expected more when adding almost 100% more radiator. Im wondering if my laing d5 is strugling with all of this by itself

Full load temps on all 3 cards is around 48-55 degrees 1 to 3rd.

Any help or ideas would be great

Is it a D5 Vario? Crank it to max RPM and see if that makes a difference.
    
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post #4 of 10
Thread Starter 
No idea on flow rate and no i dont have a vario frown.gif

Im wondering if dual pump would make a big enough difference to matter
    
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post #5 of 10
Quote:
Originally Posted by wrxxx View Post

No idea on flow rate and no i dont have a vario frown.gif

Im wondering if dual pump would make a big enough difference to matter

Could well be the air bubbles. Give it a day or so to clear up and re test. Shake it a bit, you know the drill. Are you absolutely sure your ambient temp was the same before and after the 480 rad install? Also, did you clean the 480 rad for manufacturing debris before installing?

I'm no expert in any way shape or form on water cooling but it could be that 3 rads and 4 blocks is a bit much for a single D5. Let's see what more experienced people say!
    
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post #6 of 10
Quote:
Originally Posted by wrxxx View Post

Currently my loop is.

Res-pump-cpu-rx360-7970-7970-7970-rx480-ex240-res

I just added the 480 and my temps havent really changed all that much. I know i still have some air in the system that im working out but i expected more when adding almost 100% more radiator. Im wondering if my laing d5 is strugling with all of this by itself

Full load temps on all 3 cards is around 48-55 degrees 1 to 3rd.

Any help or ideas would be great


Most radiators use a dual pass U flow design, so most of those chambers are flowing in parallel. The combined area of the inside of the chambers is much larger than the G1/4 barb, and they have little to no obstruction to the flow path. Radiators will add VERY little restriction to a loop. Generally it's waterblocks and the combined length of tubing that matters. On that note, that is a LOT of waterblocks for a single pump. What diameter tubing do you have, and approximately what is the combined length of the tubing? Also, what pump are you using?
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post #7 of 10
If its not a vario D5 but rather 655-B model then they are quite a bit less powerful than the Vario and would definately struggle with all those blocks and a thin rad like the EX
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post #8 of 10
personally I would go with dual pumps to be sure, It will improve your temps and will certainly help with the large number of blocks you have. It will also provide redundancy if one of them fails

If you are curious I am running two MCP655 (vario) pumps for the following: RX480 Rad - HD7950 - HD7950 - RX260 Rad - CPU - Motherboard - Reservoir
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post #9 of 10
Thread Starter 
tubing is 7/16

are there any dual pump bay reservoirs?
    
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post #10 of 10
Thread Starter 
Well i ordered a new reservoir and a xspc vario that im going to run in series with the laing. Hopefully that will help some. Ive always been worried about not having enough pump.
    
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