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[SOLVED] Best setup for watercooling SLI'd GTX570s and i7-2700K

post #1 of 8
Thread Starter 
Hi,

I'm a new member here and I'm planning to watercool my current setup. I have 2 GTX570's but only have one installed at the moment due to heating issues in SLI. I thought of watercooling them to solve this issue and would like to ask some advice regarding it.

I currently have the Maximus IV Gene-Z mobo in a CM Storm Enforcer case. The case can only accomodate a 240 rad at top and a 120 in the rear exhaust. Would those two radiators be enough to cool two GTX570s in SLI?

Another question is if I add in the processor, an i7-2700K, would the radiators still be enough to cool everything? The processor is currently being cooled by a CM Hyper212 EVO cooler with dual fans. Is it better to leave the processor as is and just watercool the GPUs? Thank you for any help that can be provided.

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post #2 of 8
Effectively, you'll have a 3x120mm radiator (makes things a tad easier looking up numbers.)

The GTX570 stock is specified for a TDP of 220 Watts. Since you have an SLi setup, this makes a grand total of 440 Watts.

Based on Martin's LL testing of 3x120mm radiators:



Source:
Code:
http://martinsliquidlab.org/2012/04/14/360-radiator-shootout-summary/

At a 10C delta between Air-IN and Air-OUT at the radiator, the maximum heat dissipated is around 330 Watts with fans at 2200RPM.

So what does all this mean?

The delta temperature is the measure of the air temperature flowing 'into the radiator' and the air temperature flowing 'out of the radiator.' Within a few degrees C, the air-out is a rough measure of the water temperature. This is important since the water pump has a maximum allowable operating water temperature. Generally you don't want to stray above 45C.

So if you can maintain a low ambient air temperature, it would be possible cooling your SLi with 2x120mm + 1x120mm radiators, but it would be cutting it really close.

I wouldn't consider adding the CPU into the mix without adding more radiators.

Side notes:
  1. Do you have a place to buy GTX 570 blocks? Are you running reference boards?
  2. Personally I don't think its worth upgrading that 'old' of technology. Water blocks are $100 a pop. Just something to consider.
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post #3 of 8
Thread Starter 
Thanks for the reply pryat. I have the MSI Twin Frozr III version for the GTX570s so it's a non-reference board. I'm going with universal waterblocks so I can carry them over when I upgrade. I'm a little strapped for cash so buying new GPUs is out of the questions for now. I'm trying to squeeze out every last drop of performance I can from my current hardware so it can last for at least 1-2 years,
post #4 of 8
The cost of water cooling your GPU setup will equate to roughly 1 new GPU.

You'll need at least:
  1. 2 Universal GPU Water blocks at ~ $50 each
  2. 1x120mm Radiator ~ $40
  3. 2x120mm Radiator ~ $50
  4. Water Pump ~ $80
  5. Tubing ~ $10
  6. Fittings + Barbs ~ $30

For a minimum estimated total of ~ $310

You will probably also want to add a reservoir and GPU memory heat sinks as well.

All of this is just an FYI in case you weren't aware. All of the prices listed are new.

On a side note, I'm surprised the MSI TwinFrozr series is having an issue with heat. I used to run a GTS 250 along side my GTX 285 for triple monitors and I ran the 250 (TwinFrozr) with the fan unplugged just fine. Do you know if the fan(s) have failed or taken a can of air to the heatsink?
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post #5 of 8
Thread Starter 
I am using a micro-atx board, the Maximus IV GENE-Z so the cards are right next to each other with barely any space between them. I have tried putting the second card in and was able to see a rise in temps as well as noise.

Given that I'm looking at around ~$300 in cost, would you just recommend that I just save the money and buy a better graphics card?
post #6 of 8
If you're planning on water cooling (and I hope you are) in the future, you would need to factor that consideration in when choosing your case.

Due to the limitations of your case in regards to mounting radiators, I would forgo water cooling at the moment and upgrade your graphics card. GTX 570s in SLi are about equal to a GTX 590. The GTX 590 is a bit slower than the GTX 770 which retails in the neighbourhood of ~$300 currently.
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post #7 of 8
Thread Starter 
Thank you Pryat for all the help. It seems that watercooling is not for me at the moment. I'll just buy a GTX770. When I build a new machine I'll definitely take watercooling into account. Thanks again.
post #8 of 8
Quote:
Originally Posted by liquidangel View Post

I am using a micro-atx board, the Maximus IV GENE-Z so the cards are right next to each other with barely any space between them. I have tried putting the second card in and was able to see a rise in temps as well as noise.

Given that I'm looking at around ~$300 in cost, would you just recommend that I just save the money and buy a better graphics card?

You said that your temps rise but have you seen how hot they get? I just cant imagine that they are getting too hot to run. I have been running my 3 680's stacked in thick for a year now and the temps are definitely higher than with 1 card but still easily usable. My top card gets to 70C which is not ideal by any means but its not in the danger zone either. Maybe a cheaper solution would be to get some high flowing, high static pressure fans blowing outside air onto those cards.
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Overclock.net › Forums › Cooling › Water Cooling › [SOLVED] Best setup for watercooling SLI'd GTX570s and i7-2700K