XSPC 750 pump limits?

jacob1995knight

jacob1995knight

jacob1995knight

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Evening, I've been using the XSPC 750 pump for around 5 months now, the loop consists of:

PUMP/RES > 120 RADIATOR > CPU > 240 RADIATOR > PUMP/RES.

however, i have just bought two R9 290X's with EK water blocks, my question:

Will the pump be able to handle this? as the loop will soon consist of:

PUMP/RES > GPU 1 > GPU 2 > 120 RADIATOR > CPU > 240 RADIATOR > PUMP/RES.

I have no idea what the limitations are of the pump, all i know is that it has a 750lph flow rate :confused:

Then my final question is, if the ^^above^^ is possible, then is it also possible it add another 240 radiator, so the loop will consist of:

PUMP/RES > GPU 1 > GPU 2 > 120 RADIATOR > 240 RADIATOR > CPU > 240 RADIATOR > PUMP/RES.

Thanks for reading :D
 
I'm not sure, but I would not use this pump for 2gpus + cpu and rads.
Also I would not run 1x120 and 1x240 rads for your cpu and 2 gpus, I think you need at least 2x240 rads for your setup
 
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It's got a 180cm head pressure so while it may shift the water its not ideal for a restrictive loop. Whereas something like the DDC has ~ 450cm iirc.

The lph figure is given from a measure of flow with little restriction ie just pushing water around a tank. The head pressure is how far the pump can push the water vertically ie full resistance. You need to know both to make an informed decision.

Have a look at an EK dcp 4.0 it should have no trouble with the loop you propose and its a bit cheaper than the Laing variants be warned it can be a noisy little sod so you have to decouple it from the case using foam/rubber whatever to cut the vibrations down.

I would seriously consider getting more rads as with the two cards and cpu at stock you'll need to dissipate around 650w in order to keep cool. 2x240mm should be the absolute minimum. They seem rather toasty cards :(.
 
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P4Clock said:
no one should ever get a EK dcp. its a fish tank pump with 1/4g fittings
D5 or DDC is the only way to go
Click to expand...

Lol whilst I agree it was my first pump and it was a solid performer despite being loud. In cases where money is tight it will still happily trounce a 750. It's the same price as a 750 when you add in the res.

Personal choice having used all the above now would be a DDC without hesitation.
 
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Owww :( i was hoping the news was going to be ok...... Looks like more money then :)
I like the DDC pumps a lot due to the looks and also the power, time to consider things i think :D

Thanks
 
Ok, so a day of talking to people / professionals about water cooling and the setup i currently have, many have suggested that i run with the XSPC 750 pump/res and see what happens, as in if the pump makes any struggling noises etc...

This is what im going to do:

1. Setup the loop with the R9 290X (two of them) included

2. Monitor and check the pump a lot just to make sure that its ok

3. monitor and record the temperatures for the CPU and the two GPUs

If the pump starts to whine or.... die then obviously i will get a new better pump, maybe the XSPC DDC combo :) that's pretty sweet.

If the temps slowly rise over time or are high from the start then i will buy a second 240mm radiator for the top of my case.

If the pump makes no noises and the temps don't rise, well then i guess im ok, but i will still monitor everything with a close eye, as water cooling can be a devil at the quietest of times.

I have faith that the pump will be ok, as its quite high in my system so its not having to do any extra work to pump fluid ^up^.

Well, guess people will see my results soon :D Fingers crossed.....
 
Let us know how you get on. I don't expect it to fail instantly but I do expect it to be sooner than normal. I'm not sure what would happen to an overloaded pump if I'm honest.
 
This exact pump was the one that previously failed on me. Proceed with caution on this one as that sounds like you'll be pushing it to and beyond its limit. I really don't rate the pump very highly. It was only being used to cool my second loop with just one gpu at the time. Unfortunately I didn't have an alarm on it and hadn't noticed it dying over the noise of my other pump (ddc). If you do insist on using that pump in the kind of loop you're suggesting then keep a close eye on it...unless you also want your system hosed in near boiling coolant.
 
If you are really going to try this, I suggest you to at least run the GPUs in parallel instead of series, so you will have less restriction.
 
Thanks for the comments, another quick question.

What would happen / would it be ok, if i added another pump to the system?

I have a EK 2.2 pump in a box from my original build, if i where to add this after the XSPC 750, would that work? as the XSPC has a 750 lph, then into the EK pump that has a 400 lph?

The XSPC has a head pressure of 1.8M and the EK pump has a head pressure of 2.2M?

Making sure that the EK pump was after the XSPC so it dosent put to much pressure on the XSPC?

So.... would it work??? :D
 
I don't think it works that way.Sell both pumps and buy one proper one or use ek 2.2 it should be fine.Gpu in parallel as Drangueos said.I have hd7970 crossfire with 360 and 280 Phoyba.R9 290x use a lot more juice,you've got 1250W psu so probably you're planing to OC those cards?You're going to need extra rad.Have you got some photos of current setup?
Mate you spend money on new gpus and blocks,don't be tight on you LC loop,please.
 
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I dont intend to be tight on my cooling, the biggest issue is my case, as its a tight fit as it is, when you say the pumps don't work that way, what about d5 dual blocks, where they have two pumps working together?

I'm going to go ahead with what I said about testing the pump first, then go from there.
 
Heck if you're thinking of getting the 2.2 to run in series just spend the extra ten and get a 4.0 no need for a second pump :).

I've never been sure how running two different pumps work surely if the ek is first the pressure it produces would overrun the 750 but then it's lph it's much lower so it's not pushing as much water so the 750 would suck the water faster than the ek can supply :confused:.
 
Yeah I'm not sure myself.There're pumps in combo but next to each other,so really it's like one unit.Two pumps in different place in the loop with different specs.?
I had ek.2.2 runing cpu,gpu and 360rad and I bought it of guy which run cpu,2xgpu,360rad and it was fine as well.He should be all right.
Check this out:

pump is loud as hell but everything is working and temps are not to bad
 
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No doubt the 2.2 will be fine. Only reason I'd get the 4 would be the ability to run it slower it would push the same volume as the 2.2 but being undervolted id have thought it would be quieter.

(That may be some bull reasoning but I've never had a 2.2 so I'm unsure how loud it is. Just remember my 4.0 was a noisy bugger at full volts but drop it to 7v(start up volts) it was whisper quiet.)
 
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