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deciding on pump/s + dual or single loop.

post #1 of 9
Thread Starter 
Hi! I decided to venture in the world of watercooling, willing to cool 2x titans and a 4930k. I've been thinking of maybe doing two separate loops, but after some research I found out that there no significant advantages to it. So i've ended up with a single loop cooling both gpus and cpu. Since I want to overclock everything I decided on a 480 monsta + 360 40mm rad (probably xspc, i like the ax's "square" edges look). But what about the pumps? after using the tables on martins liquid lab to calculate the pressure losses to a single d5 pump in the loop, i found that it will have to be running on max (5) in order to be able to handle everything. Am I doing something wrong? Are dual pumps used on similar setups? or maybe dual ddc 3.25s?
post #2 of 9
2 rads + 3 blocks = 1 d5

xspc rads arent restrictive at all. i dont know how you came up with insufficient flow using anything less than setting 5 on a d5.
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post #3 of 9
Hey 1rad3,

Definitely glad you've decided to join the watercooling side of the PC life, although I would like to make one thing clear. There is quite a significant advantage to dual loop, especially if you're individually cooling the CPU and then two GPU's.
  • Less tubing on one loop means less time traveled for the liquid to move around
  • A smaller loop that doesn't run through multiple components is more likely to cool more effectively due to the fact it's not picking up any more heat from things like GPU's.

In my opinion, the MONSTA should be used for the CPU on a single loop, then the 40mm 360 can be mounted on the front and used as a separate loop for the GPU's. In regards to the pumps, dual DDC 3.25's should easily provide enough power on one loop, in fact even a single 3.25 should be capable, though I may be wrong.

I would opt for a dual separate loop if you're already considering that option as it's a great way to go and I've cooled countless PCs on separate loops with dual pumps.

Hope we helped,
ROGUEPC.
post #4 of 9
Quote:
Originally Posted by pc-illiterate View Post

2 rads + 3 blocks = 1 d5

As pc-illiterate stated above, one D5 should easily run the loop.
post #5 of 9
dual loop wont serve any helpful purpose. you waste cooling from 1 loop sitting 'idle' while the other loop is working. it doesnt matter how many components coolant runs through to 'cool more effectively'.
my loop and countless others work just fine and very effectively and efficiently cooling multiple components with multiple rads. it works pretty damned well.
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post #6 of 9
I've noticed a big difference comparing dual and single loops in my rig. I started off with a single loop cooling a 4770K @ 5.2GHz and 2 GTX 780 Ti's, switched to a dual loop for showcase purposes - not really thinking about the difference it would make and I'm noticing considerably lower temps than before.
That's just from my knowledge and experience, but definitely a single loop can cool extremely well as is.
post #7 of 9
Thread Starter 
thanks guys! and what about the amount of rad space? could I just use a 40mm thick 480 and a 240 monsta? doesn't after 120x2 per component the rule of diminishing returns kick in / soundwise the fans need lower RPM?
post #8 of 9
Quote:
Originally Posted by pc-illiterate View Post

2 rads + 3 blocks = 1 d5

+1. I was running this setup prior to my current one and it kept my loop cool and running quietly.
Quote:
Originally Posted by roguepc View Post

I've noticed a big difference comparing dual and single loops in my rig. I started off with a single loop cooling a 4770K @ 5.2GHz and 2 GTX 780 Ti's, switched to a dual loop for showcase purposes - not really thinking about the difference it would make and I'm noticing considerably lower temps than before.
That's just from my knowledge and experience, but definitely a single loop can cool extremely well as is.

With the same fans?

What kind/size of rad?
Edited by Ironsmack - 3/5/14 at 1:17am
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post #9 of 9
Quote:
Originally Posted by Ironsmack View Post

What kind/size of rad?

I'm using 2 XSPC RX360 46mm rads for the top and front on a modded 750D.
The fans I'm using currently until I find something better are SP120 Performance editions from Corsair. I have 12 of those (6 for each rad in push/pull).
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