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post #1 of 17 (permalink) Old 11-19-2019, 08:38 AM - Thread Starter
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Pump Selection Help

Hey Everyone,

Putting together my first major water cooled rig sometime next year, so I'm planning it now (only reason I wait is because I want to wait for Ampere to come out before doing so, since I'm still on 10 series currently). I'm having trouble deciding on pump selection though, not just the model of pump (such as DDC since the head pressure is higher than the D5), but also how many pumps I should grab.

I will have 2 loops, one is pretty basic and is for the second system in my Enthoo Elite. It will handle 1 CPU and 1 GPU, so not to worried there, just doing a single 360mm rad and a single D5 on that one.

But the area I'm having trouble with is the rest of the system, which will be a 3970X, 2 x whatever top tier Ampere GPU is out next year (hopefully), 1 x 1070 as a tertiary GPU (I have need 7 display outputs), 3 x 360mm rad and a 140mm rad. Is a single D5 anywhere near enough for all of that? Or should I grab 2 for that second loop? And if I need 2, how should I configure them? Not sure if it matters where I put them in the loop but I would imagine you'd want them like halfway through.

Thanks for any help! I've done some digging around but haven't found a ton of info when it comes to this large a number of components.
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post #2 of 17 (permalink) Old 11-19-2019, 08:52 AM
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i'd go with two.

everyone seems to love EK's dual D5 kit.

as to where to put them, the same place you always do. beneath the reservoir. There's really no need to split them up, the included serial top is the best method.

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post #3 of 17 (permalink) Old 11-19-2019, 08:55 AM
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Quote: Originally Posted by skupples View Post
i'd go with two.

everyone seems to love EK's dual D5 kit.
Where is the MCP35x2 love? I'm hurt.

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post #4 of 17 (permalink) Old 11-19-2019, 08:57 AM - Thread Starter
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Quote: Originally Posted by skupples View Post
i'd go with two.

everyone seems to love EK's dual D5 kit.

as to where to put them, the same place you always do. beneath the reservoir. There's really no need to split them up, the included serial top is the best method.
OK good to know, I figured 2 would be necessary for that setup. So I'll have 3 pumps in this case lol. I was hoping to go with the FLT series pump res combos from EK but they don't have a dual pump version of that so I might do something different. Great to know placement isn't really an issue, happy to hear this. Greatly appreciate the insight!
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post #5 of 17 (permalink) Old 11-19-2019, 08:58 AM - Thread Starter
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Quote: Originally Posted by Shawnb99 View Post
Where is the MCP35x2 love? I'm hurt.
Isn't the MCP35 somewhat noisy though? I probably should have put in my post that I'm looking for silence as well.
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post #6 of 17 (permalink) Old 11-19-2019, 09:03 AM
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Quote: Originally Posted by Shawnb99 View Post
Where is the MCP35x2 love? I'm hurt.
LOL... I even noted this to myself after NOT mentioning it for the first time in a decade.

EK's dual D5 kit is about the same price, and D5s are quieter.

my main reason for evangelizing MCP35x2 is because it was pretty much the ONLY dual pump on the market back in the day. Also, dual pump users were still getting shart on by folks like b-Neg back then, so I had to rep

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post #7 of 17 (permalink) Old 11-19-2019, 09:05 AM - Thread Starter
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Quote: Originally Posted by skupples View Post
LOL... I even noted this to myself after NOT mentioning it for the first time in a decade.

EK's dual D5 kit is about the same price, and D5s are quieter.
OK I'm starting to think the dual D5 kit is the best way to go for this. Thanks for the advice, just don't want to mess this up since it's my first major one lol.
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post #8 of 17 (permalink) Old 11-19-2019, 09:15 AM
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a dual pump is a good start to not messing things up in a massive build.

a couple other things to note -

hard angle 90 degree fittings directly off your pump greatly stifles flow. A good in between if you NEED that kinda tight turn is BP's 90 degree snake.

also, always think about gravity during the install. Specially if you have any sideways oriented horizontally mounted radiators. Make sure the top port is the inlet.

the pic may help understand better, the red port, you'd want that to be your inlet.
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post #9 of 17 (permalink) Old 11-19-2019, 09:22 AM - Thread Starter
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Quote: Originally Posted by skupples View Post
a dual pump is a good start to not messing things up in a massive build.

a couple other things to note -

hard angle 90 degree fittings directly off your pump greatly stifles flow. A good in between if you NEED that kinda tight turn is BP's 90 degree snake.

also, always think about gravity during the install. Specially if you have any sideways oriented horizontally mounted radiators. Make sure the top port is the inlet.

the pic may help understand better, the red port, you'd want that to be your inlet.
Good to know about the fittings, thanks! Also great to know about rads, all mine will be mounted "normal" so to speak though so I think I'll be good to go. Makes total sense though and I'll keep that in mind. Now time to get to actually planning the loop itself lol, might post some pics with some mockups to get thoughts later.
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post #10 of 17 (permalink) Old 11-19-2019, 10:01 AM
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D5 is a good option but not the best. MCP35X is a better option pump but will be louder and generally needs heatsyncs. MCP50X is the best but no dual top option and there have been rumors of noise issues over time. The MCP50X uses a similar impeller design as the Alphacool 755 pump which has an issue with a retention washer...

Asus Prime Z370, Intel 8700k @5.0Ghz, Nvidia GTX 1080 Ti, 16GB @3400 CL14, Watercooling: x2 MCP355 pumps, x1 280 on front of case, x1 360 on top of case, x1 140 on back of case, x1 240 on bottom of case

Last edited by StAndrew; 11-19-2019 at 10:13 AM.
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