Too little cooling?

[OddsCrazyStuff]

http://hardwarelabs.com/nemesis/gtr/gtr-480/

http://www.corsair.com/en-eu/ml120-120mm-premium-magnetic-levitation-fan-twin-pack

 

2x 360mm + a 480mm with the corsair fans for x99/x299/x399 + 7x high end GPUs (most likely 1080Ti).

This is a workstation, so it will run 100% for hours, if not days at the time.

 

Do I have enough cooling or do I need to add more fans/change fan model to higher RPM (like Noctua industrial)?

 

I have spent 6 months working with Parvum on a case (should be cut in a few weeks), so I would prefer not to spend more time/money to make it fit more radiators.

[Leonard]

7 GPUs?...what MOBO?....it maybe enough but you sure will need 2 D5s.

[OddsCrazyStuff]

1 hour ago, Leonard said:

7 GPUs?...what MOBO?....it maybe enough but you sure will need 2 D5s.

Something like this, but still waiting for stuff to be released.

 

Dual pump is planned, most likely dual DDC. They seem to have more pressure, which is needed to get through all the blocks and such.

[Leonard]

1 hour ago, OddsCrazyStuff said:

Something like this, but still waiting for stuff to be released.

 

Dual pump is planned, most likely dual DDC. They seem to have more pressure, which is needed to get through all the blocks and such.

While i am not a dream crusher, the trapped air in that planned 7 GPU SLI flow bridge will be a nightmare. I feel you will need more flow than pressure but you will need pressure head as well, DDCs run a bit hot but should do. Would dual loops be out of the question or do you want one continuous loop?...dual loops might be best. 

[W-L]

6 hours ago, OddsCrazyStuff said:

http://hardwarelabs.com/nemesis/gtr/gtr-480/

http://www.corsair.com/en-eu/ml120-120mm-premium-magnetic-levitation-fan-twin-pack

 

2x 360mm + a 480mm with the corsair fans for x99/x299/x399 + 7x high end GPUs (most likely 1080Ti).

This is a workstation, so it will run 100% for hours, if not days at the time.

 

Do I have enough cooling or do I need to add more fans/change fan model to higher RPM (like Noctua industrial)?

 

I have spent 6 months working with Parvum on a case (should be cut in a few weeks), so I would prefer not to spend more time/money to make it fit more radiators.

That would be enough cooling your main concern would be the pumps due to the high amount of flow restrictions, your going to want to look at dual pumps like D5's or one very powerful unit like the PMP-500 or PMP-600. 

 

http://koolance.com/pmp-500-pump-g-1-4-bsp

http://koolance.com/pump-g-1-4-bsp-pmp-600

 

[OddsCrazyStuff]

1 hour ago, Leonard said:

While i am not a dream crusher, the trapped air in that planned 7 GPU SLI flow bridge will be a nightmare. I feel you will need more flow than pressure but you will need pressure head as well, DDCs run a bit hot but should do. Would dual loops be out of the question or do you want one continuous loop?...dual loops might be best. 

Yeah, bleeding is not going to be easy, but that is always an issue with big loops.

 

Dual loop is mainly for looks, as it dont add anything to the temps. In fact, it could worse them, as cooling capacity is lower then it would be with 1 loop. If I say used a 360mm for the radiator loop and the 360mm+480mm for the GPU loop, so would the GPUs miss out on 360mm cooling capacity, when doing workflows that are GPU based (entire point of 7 GPUs in the first place).

 

1 hour ago, W-L said:

That would be enough cooling your main concern would be the pumps due to the high amount of flow restrictions, your going to want to look at dual pumps like D5's or one very powerful unit like the PMP-500 or PMP-600. 

 

http://koolance.com/pmp-500-pump-g-1-4-bsp

http://koolance.com/pump-g-1-4-bsp-pmp-600

I plan on using 2 of these: https://www.ekwb.com/shop/ek-ddc-3-25-laing-ddc-3-25

 

Also, when you say enough cooling, do you mean enough to avoid throttling or enough to get okay temps?

[W-L]

3 minutes ago, OddsCrazyStuff said:

Yeah, bleeding is not going to be easy, but that is always an issue with big loops.

 

Dual loop is mainly for looks, as it dont add anything to the temps. In fact, it could worse them, as cooling capacity is lower then it would be with 1 loop. If I say used a 360mm for the radiator loop and the 360mm+480mm for the GPU loop, so would the GPUs miss out on 360mm cooling capacity, when doing workflows that are GPU based (entire point of 7 GPUs in the first place).

 

I plan on using 2 of these: https://www.ekwb.com/shop/ek-ddc-3-25-laing-ddc-3-25

 

Also, when you say enough cooling, do you mean enough to avoid throttling or enough to get okay temps?

Those would be good in series, and it would be more than enough to get good temps, with a dual 360mm and a 480mm in a single loop.

[OddsCrazyStuff]

1 hour ago, W-L said:

Those would be good in series, and it would be more than enough to get good temps, with a dual 360mm and a 480mm in a single loop.

If I went pump-reservoir combo: https://www.ekwb.com/shop/ek-xres-100-ddc-acetal

Would that still be considered "in serie", when placed right after each other in the loop?

 

The loop will have a big reservoir, but because of placement in case, so will the pumps not be below the main reservoir (liquid will need to be drawn to the pump).

Hence, giving the pumps a small reservoir to prime them.

[W-L]

1 minute ago, OddsCrazyStuff said:

If I went pump-reservoir combo: https://www.ekwb.com/shop/ek-xres-100-ddc-acetal

Would that still be considered "in serie", when placed right after each other in the loop?

 

The loop will have a big reservoir, but because of placement in case, so will the pumps not be below the main reservoir (liquid will need to be drawn to the pump).

Hence, giving the pumps a small reservoir to prime them.

Yes you can as long as they are one after another, for the DDC I would recommend getting a heatsink on it as it's not an actively cooled unit and you'll most likely need to run them full bore or close to it. 

[Leonard]

2 hours ago, OddsCrazyStuff said:

Yeah, bleeding is not going to be easy, but that is always an issue with big loops.

 

Dual loop is mainly for looks, as it dont add anything to the temps. In fact, it could worse them, as cooling capacity is lower then it would be with 1 loop. If I say used a 360mm for the radiator loop and the 360mm+480mm for the GPU loop, so would the GPUs miss out on 360mm cooling capacity, when doing workflows that are GPU based (entire point of 7 GPUs in the first place).

--gone--

I see your point.

[OddsCrazyStuff]

16 hours ago, W-L said:

Yes you can as long as they are one after another, for the DDC I would recommend getting a heatsink on it as it's not an actively cooled unit and you'll most likely need to run them full bore or close to it. 

The case has the option to adding more pumps other places in the loop, you think that would make a difference?

 

Heat sink is planned, both to expend the lifespan of the pump and to reduce vibrations.

[W-L]

3 hours ago, OddsCrazyStuff said:

The case has the option to adding more pumps other places in the loop, you think that would make a difference?

 

Heat sink is planned, both to expend the lifespan of the pump and to reduce vibrations.

The hepta block is semi parallel so it will help a little with flow restriction but having a pump in two different areas in series can be beneficial as long as the initial pressure is enough to force the fluid through the blocks.