Underpower pump ?

[Seize]

Hey,

I feel that my pump is underpowered regarding my setup, I'm currently using an EK DCP 4.0 12V.
Like, the water inside the reservoir is steady, not even a little movement, and it has some serious trouble to push little air bubbles.

Here is the setup

Reservoir => Pump => 240 mm Slim radiator => CPU Block => 120 mm slim radiator => CGU Block => 360 mm upside down (the radiator is vertical mounted, with in/out on the down position) => reservoir.

I was thinking on 2 solutions: Taking another pump, like a Laing D5, or maybe should I go for a second loop ?

Also, what is the water path in the radiator ? I mean, the inlet/outlet are separated or the water can just path threw them ?

Thanks

 

[Karder]

I would definitely switch to a stronger pump, aka a D5 or MCP655 (same thing, really).

You have a lot of restrictions and only a strong pump would be able to provide proper pressure and flow.

While a second loop may be a solution, it is really not necessary for a cooling setup where you only cool two components.

Also, dang son(girl?)!!! Aren't 3 radiators a bit overkill for cooling only two components?

 

[sok0]

He coulda gotten by with 1 triple radiator most likely..... The main thing that is missing from this post are the CPU/GPU temps using that pump. Just because you cant see the water moving, doesn't mean anything.

 

[Seize]

I would definitely switch to a stronger pump, aka a D5 or MCP655 (same thing, really).

You have a lot of restrictions and only a strong pump would be able to provide proper pressure and flow.

While a second loop may be a solution, it is really not necessary for a cooling setup where you only cool two components.

Also, dang son(girl?)!!! Aren't 3 radiators a bit overkill for cooling only two components?

To be honest I was planing to overclock, and I had some pieces coming from my ancient loop, and also because I have 2 slim radiators.

My temps in idle are:
CPU: 39-40°C
CGU: 29-30°C

In 100% load:
- CPU: 54°C
- CGU: 52°C

Nothing is currently overclocked

 

[Karder]

I don't know what CPU you have, but those temps seem a bit high for stock CPU.

GPU temps seem normal, but once again, I don't know what you have.

I have i7 980X 3.33GHz CPU (overclocked to 4.4GHz) and 2x GTX 680 4gb FTW GPUs (both overclocked) and my temps are

CPU: 32-34°C
CGU: 26-30°C

In 100% load:
- CPU: 58°C
- CGU: 48°C

I only have 2 rads, on of them is a slim 360mm rad in push pull and the other is a 280mm in push.

So I would say that your flow might not ideal

 

[King Icewind]

I would try just taking out the 120mm rad first and see if it makes any difference. Just go from the CPU to the GPU. 600mm worth of rad space is more than enough.

 

[Seize]

I don't know what CPU you have, but those temps seem a bit high for stock CPU.

GPU temps seem normal, but once again, I don't know what you have.

I have i7 980X 3.33GHz CPU (overclocked to 4.4GHz) and 2x GTX 680 4gb FTW GPUs (both overclocked) and my temps are

CPU: 32-34°C
CGU: 26-30°C

In 100% load:
- CPU: 58°C
- CGU: 48°C

I only have 2 rads, on of them is a slim 360mm rad in push pull and the other is a 280mm in push.

So I would say that your flow might not ideal

I have a core i7 950@3.06 GhZ and a GTX 780. That's why I think, regarding your temps, maybe the pump isn't sufficient.

 

[Arcygenical]

There should be no bubbles in your loop. Are you entirely sure it's well bled??

 

[Seize]

There should be no bubbles in your loop. Are you entirely sure it's well bled??

Yeah, I'm pretty sure, but I think there are still bubbles because of the position of the 360mm rad (upside down), and that the pump might not be sufficient to push the air our of the rad.

 

[Seize]

I would definitely switch to a stronger pump, aka a D5 or MCP655 (same thing, really).

You have a lot of restrictions and only a strong pump would be able to provide proper pressure and flow.

While a second loop may be a solution, it is really not necessary for a cooling setup where you only cool two components.

Also, dang son(girl?)!!! Aren't 3 radiators a bit overkill for cooling only two components?

Do you think this pump would be sufficient ?

http://www.docmicro.com/pieces/Alphacool-Pompe-VPP655-Avec-Top-Plexi_10880.html

Also, can I set it vertically ?

 

[smithkt]

Yep. That is a D5. It will work vertically facing up, not down.

 

[Seize]

Yep. That is a D5. It will work vertically facing up, not down.

Great, thank you, I'll manage to set it in order to feed it directly from my reservoir without any tube. This pump should be powerful enough for my loop ?

 

[smithkt]

Great, thank you, I'll manage to set it in order to feed it directly from my reservoir without any tube. This pump should be powerful enough for my loop ?

I'm far from an expert, but yes, the D5 should handle that loop easily.