second pump in loop?

[FoulOnWhite]

If you've ever had a pump die you understand the value of running dual pumps. Not to mention the increased ease of purging a large loop. There's always value in dual pumps despite what some narrow minded members may profess.

Arguing about pump noise is silly, particularly when most people have never owned more than a couple of pumps at best. I've got 5 d5s currently, 3 from from different manufacturers. They ALL have different noise profiles. From barely audible with your ear next to them to loud af from 5 feet away. I've had 7 or 8 d5s and 10 or 12 ddcs from every manufacturer under the sun and it's been the same story with those. Some are quiet, some are loud. Making all encompassing statements about something as random as pump noise is generally inaccurate.

I had single pump but my high flow next was connected to the switch connection on the MB, so if pump goes zero or water temp over 60c it would turn off. Imo every loop, dual pump or not should have a similar saftey setup.

I have not come across a quiet D5 on 100% and i have used EK, XSPC and xylem versions.

 

[Vya Domus]

My VPP775 is also faintly audible even at lowest RPM setting.

 

[maxfly]

I had single pump but my high flow next was connected to the switch connection on the MB, so if pump goes zero or water temp over 60c it would turn off. Imo every loop, dual pump or not should have a similar saftey setup.

I have not come across a quiet D5 on 100% and i have used EK, XSPC and xylem versions.

When I say redundancy it isn't to prevent CPU damage it's to prevent my throwing the computer upon realizing it needs to be disassembled...only half kidding hehe.

They're likely all Xylem built (depending on your country)unless the EK happens to be an older Lowara or the XSPC is an og Laing, both had their turds unfortunately. If you keep trying, you'll find one. If not that patient, return them until they give you one. Or try Koolance (2 of my 3 are quiet)or Swiftech...if you can source any these days, no guarantees there with quiet or availability. I hear EK has tweaked their new d5s so that may also be an option if you don't mind the tax.

 

[Belfaborac]

My VPP775 is also faintly audible even at lowest RPM setting.

Interesting. I've got three of those running and can't hear them when they're going at 75%.

 

[FoulOnWhite]

seems it's aproper gamble with pumps, why is that?

I do have a barrow D5 kinda hybrid that is silent at full speed and moves fluid pretty well.

 

[Belfaborac]

No idea. I've never had a noisy pump, but then my total experience is in no way statistically significant. One VPP655, 3 VPP755, a couple of EK D5 and an EK D5 vario. All nearly silent with an open case, inaudible with the case closed. And my hearing is excellent, except for whatever might lurk above ~15KHz.

 

[EddyAlphacool]

My VPP775 is also faintly audible even at lowest RPM setting.

Then I would check whether the expansion tank or pump top is not transmitting the vibrations of the pump directly to the housing or whether the housing is not amplifying the noise here. Actually, the VPP755 / Apex pump is not audible from a closed housing at minimum speed.
How loud a pump is depends very much on how and on what it is mounted. If it is mounted unfavorably, or if there is no decoupling, then the housing can sometimes react like a massive sound body. However, this actually applies to all pumps at minimum speed.

 

[A Computer Guy]

Hi,
My fans are usually at 700-900 rpm and are the loudest items lol

If your d5's are noisy they are garbage.

Or if your D5's are connected to a EK distroplate surface, pump noise can be an issue where it might not be an issue with an EK tube and mounting system.

 

[FoulOnWhite]

Or if your D5's are connected to a EK distroplate surface, pump noise can be an issue where it might not be an issue with an EK tube and mounting system.

Funny you should say that. I tried a EK flat pump/res with a D5, but the distance from the pump inlet to the inside surface of the res was only about 10mm, which made the pump very noisy. Maybe because of the restriction on the pump.

 

[A Computer Guy]

Funny you should say that. I tried a EK flat pump/res with a D5, but the distance from the pump inlet to the inside surface of the res was only about 10mm, which made the pump very noisy. Maybe because of the restriction on the pump.

I think to some degree once you starting hooking up to flat reservoirs (including distroplates) your really introducing a bunch of hard turbulent 90 degree angles. It would be nice when they machine the acrylic if they would curve the channel to the port like the inside of a nice 90 degree fitting so it's not such a hard transition for the liquid to flow.

 

[FoulOnWhite]

I think to some degree once you starting hooking up to flat reservoirs (including distroplates) your really introducing a bunch of hard turbulent 90 degree angles. It would be nice when they machine the acrylic if they would curve the channel to the port like the inside of a nice 90 degree fitting so it's not such a hard transition for the liquid to flow.

View attachment 324096

I think it was really hard on the pump, and i'm sure it would lead to early pump failure. Also i thnk having the water out at 90 degees to the pump rotor is no good.
On my pic, red is good, but on the distro plates they have yellow which i think is not as good.

 

[A Computer Guy]

I think it was really hard on the pump, and i'm sure it would lead to early pump failure.

I'm not sure about that. I think it's just because the pump is parallel to the opposite side of the res it just has the worst possible sound profile that echos the noise from the pump vibration. If inside the res they varied the inside surfaces a bit I bet it would diffract the sound and you might get a sound that is something much less annoying. My distroplate has a metal plate in front of my pump and if it's pointed at you you can hear the pump like some kind of directional speaker.

One thing I found helped with the noise was putting some insulating material between the distroplate and the mounting surface including some locktite on the threads of the mounting screws to the case. This helped change the noise profile overall but just not of the reservoir itself.

 

[ThrashZone]

Hi,
Yeah use as few 90s as possible especially in and out a pump.

 

[FoulOnWhite]

Hi,
Yeah use as few 90s as possible especially in and out a pump.

Even though some hardline rigs have no 90's in them, some do still have a fair few 90 degree bends in the tubes, though whether that effects flow as much as a 90 degree fitting, idk.

 

[ThrashZone]

Hi,
Hard tubing bends are way different than hard 90 fittings as computer guy pointed out.
Personally if I were going to hard tube I wouldn't use any sharper than a soda can radius, lots of people use like a quarter/ .25 cent piece this one tends to get very narrow on the bend.

 

[FoulOnWhite]

Well here are my temps on air, playig farcry 6, waiting on the new seal for the core 1 block.
I have a noctua u12s with two fans on the CPU and stock on the gpu. I have 6 fans on front of case blowing in, and 3 on the roof blowing out, 1 on the back blowing out.

 

[ThrashZone]

Hi,
Yep not bad
It will never leak and if it gets clogged with dust all that is needed is a little compressed air/ blower no draining/ leak testing...

 

[FoulOnWhite]

Hi,
Yep not bad
It will never leak and if it gets clogged with dust all that is needed is a little compressed air/ blower no draining/ leak testing...

The u12s is doing far better than i thought it would on the sweaty bad rep 12700k. I guess having such good un restricted(by rads) airflow in and out of the big case helps.

If it grows on me on air, i will sell all the water cooling stuff and leave it nice and simple.

 

[ThrashZone]

Hi,
Think gpu's are the noisy ones and benefit the most on water seeing just the fans ramping up and down is/ can be pretty annoying so don't get rid of that stuff just yet hehe
You could just turn it into an awesome gpu aio like I did

 

[kapone32]

Hi,
Think gpu's are the noisy ones and benefit the most on water seeing just the fans ramping up and down is/ can be pretty annoying so don't get rid of that stuff just yet hehe
You could just turn it into an awesome gpu aio like I did

That is why I love Quick connect tubing. Gives me an AIO that I am allowed to change the GPU without draining the loop. I still get the nice quiet 47 C GPU pumping space radiator heat out of the top of the case and making the inside just cool. I can feel the cool air from my front 140mm 3000 RPM fan blowing out the back of the case where the GPU sits. One truth though is if you have a high end GPU on water prepare to have your Windows cracked in the Winter (Northern Hemisphere) all season.

 

[thesmokingman]

Hi,
Think gpu's are the noisy ones and benefit the most on water seeing just the fans ramping up and down is/ can be pretty annoying so don't get rid of that stuff just yet hehe
You could just turn it into an awesome gpu aio like I did

They other major reason for me from experience is that the gpu lifespan is extended years from being watercooled, granted one isn't crapping that "extra" life away with a constant overclock.

 

[FoulOnWhite]

I run mine all stock now, nice and stable, not even sure there is any need to OC now, maybe just for fun. I see people with a 12900ks overclocked and wonder why.

 

[ThrashZone]

I run mine all stock now, nice and stable, not even sure there is any need to OC now, maybe just for fun. I see people with a 12900ks overclocked and wonder why.

Hi,
Last I saw for an extra 10+-%
Except for the exotic coolers they do it for kicks.