Dual or single loop for new w9-3475x build

[elderan]

I am coming from a w-3175x dual gpu build that was 4 years old and has been great. Its time to upgrade so I have already bought the main parts of the new system. Before people ask this is not a gaming pc. Its mostly used for work I do with my main job and things I do on the side (which is why I need dual gpus)

 

w9-3475x (I will oc it but not extreme as I need stability)

two 4090s

512 ddr5 memory

 

My current build has a dual loop and I thought to do the same with the new system but this time I went with a smaller case. I am going from a W200+Top+Bottom (ITS HUGE) pedestals to a Phanteks Enthoo Elite which is big but small compared to my last setup. But now I am debating if a single loop with maybe two pumps might be just as good. My two ideas of setups are as follows. Note that I need dual PSUs for this, so I will be using the bottom area for another PSU so it will be limited for rads if I can fit any.

 

Dual Loop, simple setup

420 rad on top, 560 rad on front.

Loop1 = Pump/Res->Gpus->front rad->Pump/Res

Loop2 = Pump/Res->CPU->top rad->Pump/Res

 

Single Loop

420 rad on top, 560 rad on front, whatever size rad I can fit in the bottom

Loop1 = Pump/Res->Gpus->top rap->CPU->front rad->bottom rad->Pump/Res

 

Just looking for thoughts on these setups, will I need two pumps for the single loop and is the single loop going to be enough for those components I am adding.

 

 

 

 

[johnno23]

Single loop should be fine but i favour redundancy and as your PC is work related do not go single pump.

I run a dual D5 pump system with 2 rads but a single CPU system.

The extra D5 pump is not really needed but it means that should a pump ever die my system will still run without any issues. It is merely for redundancy purposes and the D5 pumps are not so expensive anymore as long as you stick to the D5 pump itself and not an EK branded D5 for example.

Alphacool have also developed some very nice Pumps at better flow potential good quality and very reasonable prices.

 

my system is inverted as I have it on the left side of my desk next to a wall in the corner of a room.

Front 420mm radiator with 6 x 140mm silent wings fans in push pull. the in/out are at the top and the inlet to my res is level with them so a simply bridge to the res inlet. this is a cylinder type the feeds the dual block with the 2 D5s and from there flows to my CPU in CPu out to GPU in AND gpu out to a top rad 280 again with 2 x 140mm silent wings fans. From that rad its outlet flows to the 420mm rad inlet.

even when summer months hit 40c without any problems the system remains running only around 5c-6c  above ambient on light loads and even under heavy loads my fluid temps never hits worrisome levels. not a truly heavy system but 3080 5900x 

 

[elderan]

6 minutes ago, johnno23 said:

Single loop should be fine but i favour redundancy and as your PC is work related do not go single pump.

I run a dual D5 pump system with 2 rads but a single CPU system.

The extra D5 pump is not really needed but it means that should a pump ever die my system will still run without any issues. It is merely for redundancy purposes and the D5 pumps are not so expensive anymore as long as you stick to the D5 pump itself and not an EK branded D5 for example.

Alphacool have also developed some very nice Pumps at better flow potential good quality and very reasonable prices.

 

my system is inverted as I have it on the left side of my desk next to a wall in the corner of a room.

Front 420mm radiator with 6 x 140mm silent wings fans in push pull. the in/out are at the top and the inlet to my res is level with them so a simply bridge to the res inlet. this is a cylinder type the feeds the dual block with the 2 D5s and from there flows to my CPU in CPu out to GPU in AND gpu out to a top rad 280 again with 2 x 140mm silent wings fans. From that rad its outlet flows to the 420mm rad inlet.

even when summer months hit 40c without any problems the system remains running only around 5c-6c  above ambient on light loads and even under heavy loads my fluid temps never hits worrisome levels. not a truly heavy system but 3080 5900x 

 

One of my first big water builds had the dual d5 pump from ek, then my second one had two ek d5 pumps. However the 2nd one had some pretty big issues so I stopped ek. EK has also gotten crazy expensive imo on everything. My current system has the Aqua Computer d5 pumps but this time around I was planning to do Alphacool VPP655 pumps with maybe a plate distro block. So maybe just add another Alphacool VPP655 pump somewhere else in the loop for redundancy.

 

One big issue is everyone seems to be out of stock on about everything but the EK stuff its crazy.

[johnno23]

3 minutes ago, elderan said:

Alphacool VPP655 pumps

those are the newer type yes and have some excellent reviews. as for out of stock I think the issue is that water cooling for custom loops were never truly carried in bulk by stores.

it was always so easy to drop a noctua air tower on a cpu etc and the water cooling market is flooded with aio. so now with the recent CPU releases requiring more cooling the market has had a huge uptick in sales depleting the basic stock that many suppliers did not want to waste too much effort and money upon.

[elderan]

On 6/17/2023 at 11:00 AM, johnno23 said:

those are the newer type yes and have some excellent reviews. as for out of stock I think the issue is that water cooling for custom loops were never truly carried in bulk by stores.

it was always so easy to drop a noctua air tower on a cpu etc and the water cooling market is flooded with aio. so now with the recent CPU releases requiring more cooling the market has had a huge uptick in sales depleting the basic stock that many suppliers did not want to waste too much effort and money upon.

I decided to try this out, single loop. 

 

2 AplhaCool 360 pump/res plates side by side

420 45 Top, Front

420 30 Bottom

140 45 Back

EKW GPU waterblock

AlphaCool 2U CPU waterblock

 

My planned loop order is Pump1->GPU1->GPU2->Back 140 Rad->Top 420 Rad->CPU->Front 420 Rad->Bottom 420 Rad->Pump2

[johnno23]

Sounds like way more than you require but regarding how it will look it sounds like a real show piece.

the 140 rad at the back I do find odd ?  would not a 140 fan unobstructed do more to help remove any build up of heat in the case ?

Anyways my only advice for such a huge volume is do not forget a drain plug and use clear fluid not anything with dyes etc.

Cleaning such a system if you use any dyes etc is not going to be easy if over time you get residue or discoloration occur

 

[elderan]

4 hours ago, johnno23 said:

Sounds like way more than you require but regarding how it will look it sounds like a real show piece.

the 140 rad at the back I do find odd ?  would not a 140 fan unobstructed do more to help remove any build up of heat in the case ?

Anyways my only advice for such a huge volume is do not forget a drain plug and use clear fluid not anything with dyes etc.

Cleaning such a system if you use any dyes etc is not going to be easy if over time you get residue or discoloration occur

 

I am still debating on the 140 on the back but you are right it might be best to just leave that out. I stopped using colored liquid a many years ago and always just do clear now. I used white one time a long time ago on a new build. It was a nightmare to clean it and clear all the gunk out. 

[ChrisLoudon]

On 6/17/2023 at 3:24 PM, elderan said:

Just looking for thoughts on these setups, will I need two pumps for the single loop and is the single loop going to be enough for those components I am adding.

Go for a complete dual loop if you fancy a bit of fun.

 

Single loop with 2 pumps if you just need the redundancy.

 

Just finished a dual loop in a Tower 500. Hands down the worst designed case I've ever worked in but think I'm making progress.

[elderan]

Just an update this is what I went with for my layout. I am debating adding a 2nd pump between the 480 rad on the bottom and the GPU for redundancy and flow. Keep in mind this build intentionally had no rgb and soft tubing for maintenance and because no one will ever see this pc once I close it. 

 

 

[Sir Beregond]

On 6/17/2023 at 9:00 AM, johnno23 said:

those are the newer type yes and have some excellent reviews. as for out of stock I think the issue is that water cooling for custom loops were never truly carried in bulk by stores.

it was always so easy to drop a noctua air tower on a cpu etc and the water cooling market is flooded with aio. so now with the recent CPU releases requiring more cooling the market has had a huge uptick in sales depleting the basic stock that many suppliers did not want to waste too much effort and money upon.

VPP655 is just a D5 rebrand, and a good pump. The VPP755 is the custom pump Alphacool made that just happens to be the same shape/size as a D5, but its had TONS of problems.

 

On 6/17/2023 at 8:53 AM, elderan said:

EK has also gotten crazy expensive imo on everything.

EK is ridiculously expensive and not even all that great. Their quality control is complete garbage and they are not even top performers for what they cost. And this isn't a new phenomenon either. I bought some EK blocks in 2015 and brand new they were missing mounting hardware, and the nickel plating was shoddy and flaked off rather quickly. For newer examples, their direct die block for LGA1700 seems to be a dud, and for as many people that have had good experiences with ZMT tubing from EK, I can point to many forums threads of people having absolutely nothing but problems with it being dirty and flaking off small pieces of rubber over time. Moreover EK can't get the ID/OD specs right on that tubing to save their lives which is why you also get a ton of posts from people talking about how it won't fit with their non-EK fittings.

 

EK is massively overrated and overpriced.

[fonzz1e]

dual d5 in a single loop with 2 qdc works fine 

u can use the qdc as drain also