second pump in loop?

[ThrashZone]

No. A higher flow rate is more efficient for cooling. In a nutshell, a higher flow rate means you are moving more coolant volume per unit time through the radiator/water block, thus also transferring more heat. Higher flow rates also create turbulence, which is better for cooling. Either you or Issac Newton is right.

Hi,
Take your fans off and let me know how flow cools everything okay
It's not as simple as fluid flow
Radiators don't cool until a fan pulls or pushes air through it.

Op
Welcome back to air cooling my z490 cpu has been on a D15 for 8 months.

 

[FoulOnWhite]

Hi,
Take your fans off and let me know how flow cools everything okay
It's not as simple as fluid flow
Radiators don't cool until a fan pulls or pushes air through it.

Op
Welcome back to air cooling my z490 cpu has been on a D15 for 8 months.

Might not be for good, i will see, the loop had much better temps, and was quieter, or maybe i need to edit the settings on the OCTO to stop the fans going up and down so much, A normal D15 does not fit on this board, so had to be a s version, lucky my mate still had one or i would have had to buy new.

 

[ThrashZone]

Hi,
You'll get the water cooling up again soon enough just stick to premix clear it's usually issue free if it's not ek fluid that is

 

[FoulOnWhite]

Hi,
You'll get the water cooling up again soon enough just stick to premix clear it's usually issue free if it's not ek fluid that is

Just need a better pump res it think and find somewhere to put the OCTO fan controller instead of it hanging at the top.

 

[ThrashZone]

Just need a better pump res it think and find somewhere to put the OCTO fan controller instead of it hanging at the top.

Hi,
As close to mine as I can find it's an old model so not surprising it's eol or out of stock

https://www.amazon.com/Alphacool-15199-Transparent-Hardware-Cooling-Accessory/dp/B01AXKSVNO

Almost twice as much below here but I wouldn't touch that cheap older style ek

EK Water Blocks EK-Quantum Kinetic TBE 200 D5 Body D-RGB Tube Reservoir - Plexi

Order EK Water Blocks EK-Quantum Kinetic TBE 200 D5 Body D-RGB Tube Reservoir - Plexi now online and benefit from fast delivery.

www.overclockers.co.uk

Here's better one

Alphacool Eisbecher Aurora D5 Acetal / Glass Reservoir - 250mm

Order Alphacool Eisbecher Aurora D5 Acetal / Glass Reservoir - 250mm now online and benefit from fast delivery.

www.overclockers.co.uk

 

[Bobaganoosh]

Have you looked at the easy-fill Heatkiller tubes? I honestly don't know why more people don't use them. I've been using them for water-cooling projects at work and they've been awesome. the top just twists open. It is...ridiculously easy to use. The only thing they always get you on is accessories. You buy the tube, then need the basic tube mount, then the mount for that mount if you want to mount it to a fan-mount location in a case....etc. Like when you buy a MO-RA3, you then need feet, fan grilles, fans, fan hub PCB, tube mount, etc....it just goes on. They make really good stuff though, so it's hard to beat it. Also, you can configure them how you want straight from their site if you're looking for RGB or different colors or something.

 

[mechtech]

What’s a normal or typical flow for cpu gpu liquid cooling?

pumps inline in series increase pressure and not flow if same pump.
Need to be in parallel for flow. That will increase velocity, noise, friction losses.

 

[FoulOnWhite]

Hi,
As close to mine as I can find it's an old model so not surprising it's eol or out of stock

https://www.amazon.com/Alphacool-15199-Transparent-Hardware-Cooling-Accessory/dp/B01AXKSVNO

Almost twice as much below here but I wouldn't touch that cheap older style ek

EK Water Blocks EK-Quantum Kinetic TBE 200 D5 Body D-RGB Tube Reservoir - Plexi

Order EK Water Blocks EK-Quantum Kinetic TBE 200 D5 Body D-RGB Tube Reservoir - Plexi now online and benefit from fast delivery.

www.overclockers.co.uk

Here's better one

Alphacool Eisbecher Aurora D5 Acetal / Glass Reservoir - 250mm

Order Alphacool Eisbecher Aurora D5 Acetal / Glass Reservoir - 250mm now online and benefit from fast delivery.

www.overclockers.co.uk

What about this, been offered it for £65
https://www.ebay.co.uk/itm/186134015265

Price is pretty good too

What’s a normal or typical flow for cpu gpu liquid cooling?

pumps inline in series increase pressure and not flow if same pump.
Need to be in parallel for flow. That will increase velocity, noise, friction losses.

The norm seems to be about 1G/PM but mine had been much lower with ok temps.

 

[gurusmi]

Hi,
As close to mine as I can find it's an old model so not surprising it's eol or out of stock

https://www.amazon.com/Alphacool-15199-Transparent-Hardware-Cooling-Accessory/dp/B01AXKSVNO

Almost twice as much below here but I wouldn't touch that cheap older style ek

EK Water Blocks EK-Quantum Kinetic TBE 200 D5 Body D-RGB Tube Reservoir - Plexi

Order EK Water Blocks EK-Quantum Kinetic TBE 200 D5 Body D-RGB Tube Reservoir - Plexi now online and benefit from fast delivery.

www.overclockers.co.uk

Here's better one

Alphacool Eisbecher Aurora D5 Acetal / Glass Reservoir - 250mm

Order Alphacool Eisbecher Aurora D5 Acetal / Glass Reservoir - 250mm now online and benefit from fast delivery.

www.overclockers.co.uk

1. Neither nor. One should use the correct Website to find the new model: https://shop.alphacool.com/shop/ausgleichsbehaelter-distro-plates/roehren-behaelter/

2. I'm running the EKWB Kinetic TBE since 4 yrs nearby 24/7 without any problem.

 

[FoulOnWhite]

1. Neither nor. One should use the correct Website to find the new model: https://shop.alphacool.com/shop/ausgleichsbehaelter-distro-plates/roehren-behaelter/

2. I'm running the EKWB Kinetic TBE since 4 yrs nearby 24/7 without any problem.

That is a pretty good deal for £65, and i already have a D5 pump to put in it.

 

[Vya Domus]

pumps inline in series increase pressure and not flow

That's true but pressure is what matters here, flow by itself doesn't really mean much. If you have one loop with 1 rad and another one with 2 rads and they both run at the same whatever l/h that means the pump in the second loop has to achieve higher pressure to overcome the extra resistance of that one additional rad.

OPs problem here was exactly that, because one of the blocks was clogged you needed more pressure, another pump in series would have "solved" the issue here but obviously that wasn't really the correct solution.

 

[HaKN !]

i have 3 pumps in my "simple" loop. Go for more pumps , you can get well over 1Gallon/ph and keep the noise down ! i have 2 D5's and 1 DDC4.2 and im doing about 300liter/ph with all 3 pumps under 3.5k rpm almost no noise from the pumps

 

[mechtech]

i have 3 pumps in my "simple" loop. Go for more pumps , you can get well over 1Gallon/ph and keep the noise down ! i have 2 D5's and 1 DDC4.2 and im doing about 300liter/ph with all 3 pumps under 3.5k rpm almost no noise from the pumps

I prefer pumps with more than 50 HP

I think I'd get the spec sheets, calculate all the losses and size a pump accordingly, but I guess it's not like PC pumps have a ton of selection with pumps curves, etc. lol

Pays to trouble shoot first though.

 

[Belfaborac]

i have 3 pumps in my "simple" loop. Go for more pumps , you can get well over 1Gallon/ph and keep the noise down ! i have 2 D5's and 1 DDC4.2 and im doing about 300liter/ph with all 3 pumps under 3.5k rpm almost no noise from the pumps

What are you cooling that needs that kind of throughput? I'm cooling a 7900X and a 4090 with ~120L/h no problem. Great temps, whisper quiet, can't hear the fans or the pumps with the PC on the floor right beside me.

 

[ThrashZone]

What about this, been offered it for £65
https://www.ebay.co.uk/itm/186134015265

Price is pretty good too



The norm seems to be about 1G/PM but mine had been much lower with ok temps.

Hi,
Yeah that's the little brother of the one I posted I believe
Only issue with either are the sprinkler pipes I removed mine all it did it make more bubbles to deal with lol
Otherwise good reservoir...

Someone said heatkiller they do make some nice stuff !

That is a pretty good deal for £65, and i already have a D5 pump to put in it.

Yeah go there man he hit gold

 

[A Computer Guy]

2. I'm running the EKWB Kinetic TBE since 4 yrs nearby 24/7 without any problem.

I like the EKWB Kinetic TBE. It was great when I was using it.

 

[thesmokingman]

No. A higher flow rate is more efficient for cooling. In a nutshell, a higher flow rate means you are moving more coolant volume per unit time through the radiator/water block, thus also transferring more heat. Higher flow rates also create turbulence, which is better for cooling. Either you or Issac Newton is right.

Nope, higher flow up to 1gpm-1.5gpm. Over that point and it's wasted energy. And everyone should know this as the testing that born this data out was done at least a decade ago.

The norm seems to be about 1G/PM but mine had been much lower with ok temps.

For a while ze Germans were infactuated with low flow loops, they swore moving water slower thru rads meant more heat transfer lol.

 

[HaKN !]

What are you cooling that needs that kind of throughput? I'm cooling a 7900X and a 4090 with ~120L/h no problem. Great temps, whisper quiet, can't hear the fans or the pumps with the PC on the floor right beside me.

I’m really only cooling a 7800x3d and a rx6900xtxh with heavy overlock. The reason for 3 pumps is mainly the mora420 and qdc’s. Don’t wanna strain 1-2 pumps. The mora in itself isn’t restrictive but there is a lot of copper tubing that the coolant has to run through and for redundancy

 

[mama]

No point daisy-chaining pumps. You will never match their speed 100%, so one pump will either push or pull the other pump. There are mounts for having two pumps in parallel though...

I have a similar setup. EK D5+res combo, EK fullcover GPU block, EK CPU+VRM "fullcover" block, EK crossflow 420mm radiator, and an Alphacool flowrate/temp sensor. With the pump at ~4000rpm that sensor is reporting ~200L/H. Iirc that is at 80% PWM duty cycle.

So, what RPM is your pump operating at?

And if temps are fine, nevermind the reported flow rate imho. Don't fix it if it ain't broke.

Dual pumps like the EK are designed to work together. It shouldn't matter if one runs at a different rate. This is only an issue with individual pumps. Maybe consider a dual pump?

 

[FoulOnWhite]

it was also too tricky for our production department to install this

The new seal has shipped. Thank you Alphacool

But i wonder how many people bought this first gen block with this imo iffy seal in it. If as Eddy said it was tricky for production to assemble it with this seal so they replaced it with an improved one, what about giving all first gen owners a new type 2 seal?

​

 

[(ಠ ͜ ಠ)]

Radiators don't cool until a fan pulls or pushes air through it.

If you say so, but that's also nonsense.

Nope, higher flow up to 1gpm-1.5gpm. Over that point and it's wasted energy.

I guess Issac Newton and the laws of physics are wrong . A PC water cooling loop is not the only type of system where a pump and coolant flow are used. In any system, there is a point of diminishing returns, but the principle itself holds true.

 

[FoulOnWhite]

Does a water loop really need 272LPH? I have seen mine down below 70LPH with still very good temps.

 

[Vya Domus]

No, flow doesn't matter very much past a certain point, you can test this yourself by varying the pump speed.

 

[EddyAlphacool]

Does a water loop really need 272LPH? I have seen mine down below 70LPH with still very good temps.

Continuous-flow coolers, i.e. coolers without a jetplate, require a high flow rate. But once-through coolers are old school and are rarely found anymore. Modern coolers all rely on jetplates and the flow rate is not so relevant here. 35-45L/h is about the minimum you should have. The cooling capacity then increases up to 120-140L/h, but the increase becomes flatter and flatter. Beyond that, you won't achieve any relevant additional performance with current cooler designs.
You can also see it well in server systems, which all have only a low flow rate with very small amounts of water, because more is simply not necessary. And far more waste heat has to be dissipated there than with domestic PCs. We are talking about 2000-5000W per system. And no, there is no chiller at the back, just normal radiators.

 

[ThrashZone]

If you say so, but that's also nonsense.


I guess Issac Newton and the laws of physics are wrong . A PC water cooling loop is not the only type of system where a pump and coolant flow are used. In any system, there is a point of diminishing returns, but the principle itself holds true.

Hi,
Only exception is if one uses a chiller and that's into exotic

You can always do like I said and remove all your fans and let us know how great your cooling is at maximum clocks your system can do
You at the arctic circle ? this might be the exception