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post #1 of 14 (permalink) Old 03-19-2019, 03:14 PM - Thread Starter
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Twin pumps strong enough?

So I have the Alphacool Eisbaer and the Eiswolf GPX Pro M02 for my 2080 Ti hooked together currently and they work just fine. However, I want to add a reservoir and another radiator which would total in: 1x 420mm / 30mm radiator, 1x 240mm / 30mm radiator, 1x 140 / 86mm (sic) radiator, the 250x50mm reservoir and ofcourse the gpu block... Will the Eisbaer and Eiswolf pumps be enough to push water efficiently through this? I'm pretty new to watercooling so I want to make sure it actually works.

The Eisbaer pump has the following specs:
  • Speed: 2600 RPM
  • Voltage: 7-13.5V DC
  • Power consumption: 4W
  • Maximum flow rate: 70L/h
  • Maximum head: 0.85m
The Eiswolf pump I couldn't find any specs on but its speed is 2200-2300 RPM peak and I gather it does a decent job. I suppose my main worry is that fat 140mm x 86mm Monsta radiator since it's a massive radiator.

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post #2 of 14 (permalink) Old 03-20-2019, 04:20 PM
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Just personal experience but... Radiators don't add any real restriction so I'd think you should be fine. My original pump (EK in house pump) ran through CPU / GPU / 240 / 120 / 140 and still had good flow (both blocks were low restriction. Your Eisbaer should be fine on it's own, but a pair for redundancy (in series) can't hurt if it makes you feel safer.
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post #3 of 14 (permalink) Old 03-20-2019, 11:09 PM - Thread Starter
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Ok, thanks!

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post #4 of 14 (permalink) Old 03-30-2019, 06:04 PM
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Quote: Originally Posted by dwolvin View Post
Just personal experience but... Radiators don't add any real restriction so I'd think you should be fine. My original pump (EK in house pump) ran through CPU / GPU / 240 / 120 / 140 and still had good flow (both blocks were low restriction. Your Eisbaer should be fine on it's own, but a pair for redundancy (in series) can't hurt if it makes you feel safer.
Nemesis GTS rads would like to have a word with you
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post #5 of 14 (permalink) Old 03-30-2019, 08:00 PM
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Quote: Originally Posted by padman View Post
Nemesis GTS rads would like to have a word with you

Ehh even then, a standard Rad is about a .5psi drop, so it would take 2 to equal 1 gpu block. A HWlabs, and a lot of the German Companies, have like .75ish, its only a tad more.

That said, those are AIO level pumps, as that is what they are, expandable AIOs. I wouldn't use those, I would if you can send them back and just get regular blocks and a Pump. You could easily get a good cpu block, gpu block and a d5 for that same price. You are paying the price of a d5 + Blocks, for AIO level bound to fail, junk, and Alphacools other pumps are prone to failure and issues, like their Spin on the d5.

even better, if you dont mind the Chinese stuff, and dont mind waiting, you could get a GPU block, CPU block and a proper D5, for the price of the GPU block alone. However even from more established brands, you can get a D5, CPU and GPU block, for about what you paid.

As to the Chinese, its pretty risky, however with my experience, OCool, isnt the best quality stuff either, actually the barrow stuff I have is better quality than the OCool.

Not to mention, the GPU blocks would be actual GPU blocks, not some hybrid AIO crap. Your getting AIO performance for Custom loop pricing, its a Raw Deal and a stupid product that shouldnt even exist. Which is exactly what ran Phoyba (owned by Ocool) out of business, and Ocool is next.

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post #6 of 14 (permalink) Old 03-30-2019, 08:04 PM
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yeah, it'll be just fine. I believe they both use the same motor to drive the pumps. so..... However, if they both use PWM 4pin leads try to keep the RPMs somewhat close.

I would also keep the 2 pumps in line together if possible. Res-gpu-cpu-rad-rad-res-gpu.....(forget the 140. not worth the hassle)

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post #7 of 14 (permalink) Old 03-30-2019, 08:27 PM
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Quote: Originally Posted by Cyber Locc View Post
Ehh even then, a standard Rad is about a .5psi drop, so it would take 2 to equal 1 gpu block. A HWlabs, and a lot of the German Companies, have like .75ish, its only a tad more.

That said, those are AIO level pumps, as that is what they are, expandable AIOs. I wouldn't use those, I would if you can send them back and just get regular blocks and a Pump. You could easily get a good cpu block, gpu block and a d5 for that same price. You are paying the price of a d5 + Blocks, for AIO level bound to fail, junk, and Alphacools other pumps are prone to failure and issues, like their Spin on the d5.

even better, if you dont mind the Chinese stuff, and dont mind waiting, you could get a GPU block, CPU block and a proper D5, for the price of the GPU block alone. However even from more established brands, you can get a D5, CPU and GPU block, for about what you paid.

As to the Chinese, its pretty risky, however with my experience, OCool, isnt the best quality stuff either, actually the barrow stuff I have is better quality than the OCool.

Not to mention, the GPU blocks would be actual GPU blocks, not some hybrid AIO crap. Your getting AIO performance for Custom loop pricing, its a Raw Deal and a stupid product that shouldnt even exist. Which is exactly what ran Phoyba (owned by Ocool) out of business, and Ocool is next.


I just got a 420 GTS, and while I don't know what its restriction is, the 360GTS is [email protected], so I would bet that the 420 is at 1.0 or more. It's my most restrictive part in my case.
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post #8 of 14 (permalink) Old 03-30-2019, 08:36 PM
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Quote: Originally Posted by reaper829 View Post
I just got a 420 GTS, and while I don't know what its restriction is, the 360GTS is [email protected], so I would bet that the 420 is at 1.0 or more. It's my most restrictive part in my case.
Ehh like I said, its restrictive, but not by not that much.



.91 is not that bad in the grand scheme, Middle restriction CPU blocks are around the same, you also have to remember that a D5 on setting 5 is like 6psi with a good top, 5 without, at 1gpm.

That means you could run, 2/3 of them and CPU and GPU block, 10 feet of tubing, few 90s, thats a pretty standard Mid Range loop, and you still have PSI to spare with a top. However ya the GTS is up there in restriction. However OP also has a Ocool Monsta, which is extremely low restriction.

And like I said, "most the German companies are around .7", which look at the graph. "And the GTS is only a tad more", which again look at the graph


as to the 420, I dont think it would be more restrictive, it may be, however usually a bigger rad, is less restrictive, as there is more room for the water to move. As seen here with the 480 GTS, which is only .8, that however isnt always the case.


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post #9 of 14 (permalink) Old 03-31-2019, 07:03 AM
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Hi,
Deja vu
https://www.overclock.net/forum/61-w...t-my-loop.html

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post #10 of 14 (permalink) Old 04-01-2019, 05:32 AM
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yea, this is why I hate charts, yea they can be cool to use but only if the person using them understands how this information translates. personally I tested all my hardware individually with a simple water loop consisting of the component being tested and a flow meter. at this point I can say that the chart does translate for me but does it for most people. I think what needs to start happening is that those with the hard ware should start posting how their hardware functions with the pumps they have. it is not like we don't do this kind of testing already. we just need to start posting our results.


as for my own hardware labs GTX it is restrictive, with a single D5 full power the flow rate on a simple water loop is 4.6LPM this is the most restrictive radiator I own. my swiftech QP has a flow rate of 5.9LPM and it is only 35mm thick compared to the HWL at 54mm thick. so thickness does not always equate to a higher flow rate, it really is all about the design of the radiator itself.

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