** How Important is Pump Speed Control **

rjk

rjk

rjk

Caporegime
Joined
8 Aug 2007
Posts
25,380
Hi Guys

looking for some feedback here.

A manufacturer is asking me for some info about pump speed control and I am keen to get some info from the community about how much of a factor it is for you guys.

I personally run my D5 pumps at a set level all the time despite having the ability to control them via my smart controller.

How important is pump control to you guys?

do you have a system controller able to control your pump?

what do you look out for in a controller?
 
I also have a D5, that in normal opperation is set to 2~ for near silence then left alone
Many other have theirs on 5 for max flow (so control make the pump more versatile)

But I do swap between 1 and 5 when bleeding the loop.
So yes pump control is important but tbh the manual knob on a D5 is fine
Never needed or wanted pump speed changes on the fly or software controlled.
The position of the control knob could be improved or the use of a thumb turn would help

Used A Big NG and Aquaero 4/5 to controll pumps. nice but overkill for my needs
 
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I didnt realise my D5 had a control when I did my first loop - think it was set to 5 by default when I was filling and it literally emptied an entire res into my system in like less than a second with a lot of air too lol... it was nice to tone it down a bit to setting 3. Like someone else said the little knob underneath serves me well enough allthough I can imagine some people find it hard to get at after its all plumbed in.
 
I have a D5 vario. I just set it to it's lowest speed and forget about it. Its nice to have the option of controlling the speed, but I don't consider it important enough to have it controllable by the system.

Quickly increasing and decreasing the speed is useful for dislodging air from components.
 
Put a PWM plug on my DDC and let the Mobo do the rest.
you dont want a pump or 2 running at 100% when your watching a film, but you dont want 50% when your under full load. all pumps should just be PWM now day.
 
I'm using 2 koolance pump controllers to control my DDC pumps... both the 18W and 10W pumps I'm running at 10.5V, but I can control from 8V to 13V.

IMO it is important to have the option to lower the voltage, if not using the controllers I would lower the voltage using something else, I tried a lamptron fc2 fan controller but it didn't work.
 
On my old D5 vario it was quiet enough to just leave at maximum, was a pig to get to after it was installed anyway

Currently running 2 D5's with PWM control, so just let the motherboard/gfx card sort them out (usually sits at 1650(ish) RPM
 
I'm looking to have my Aquaero 5 XT adjust my Laing DDC's on the fly depending on fluid and component temperature.

Want my system was quiet as possible during low loads.
 
I use serial D5 Vario's in my main rig, the ability to tune them to what the loop needs and then leave them till the end of time (or until I re-work the loop next) is awesome.

Never saw the point in PWM pumps or connecting them to a fan controller, waste of time as it's counter productive. The are only two types of flow in a loop: insufficient and sufficient, once flow is high enough to not be limiting cooling performance then adding more isn't going to help, in fact it can actually make things worse by increasing heat dump from the pump. If you run the pump from PWM then all it's going to do is add extra heat to the loop when the CPU temp rises (either that or it's going to run at substandard flow and cause the CPU to heat up faster then respond by supplying proper flow).
 
Probably not valid as they are not sold anymore but I have always run my 50z's at full speed as they are nice and quiet. Surely though, people only reduce pump speed to control the noise. If a pump is quiet while still moving a decent amount of water then speed control is irrelevant and unneccessary.
 
Not sure if this is D5 only if so sorry but the reason I went against a D5 and got a DDC was for more pump control. I didn't like the idea of having to open the case to increase the pump speed should it be needed.

At the moment my DDC is controlled via a lamptron controller set to increase its rpm based on temperature. I hate superfluous noise unless I'm running intensive programs in which case I'll get over it :D.

However afaik performance doesn't really increase above 1gpm so as long as the pump is above that it doesn't really mater.
 
Depends on the pump and application. If it's a D5 then I am comfortable with a Vario model also to set & forget. But if a DDC, I would prefer it be a PWM model so I can set it on a curve to prevent unnecessary overheating- especially if in a low restriction loop.
 
Ive got an xspc variable d5. Very much a selling point being able to adjust for bleeding and everyday needs is very worth while when i replace it will be for another of the same
 
ive ran an xspc twin bay twin d5 over the last year and its been a right pain having to pull out my cosmos 2 ultra case to open door and gets to pumps to adjust speed to my liking, just doing a new loop build and ordered 2 d5 pwm models so i can control via new fan controller.
i suppose it all depends on the persons preference to noise i prefer complete silence from my pc others dont mind noise. still i think if the option was there most would use it at some time.
 
Hi, loved my MCP35X PWM pump but died due to shorting out.

Now using a EK Water Blocks EK-DCP 4.0 undervolted but getting one of these EK Water Blocks EK-DCP 4.0 PWM.

At £40 the EK-DCP 4.0 PWM is great value for the money, apart from there size can't fault my EK-DCP 4.0, will be kept as a spare.
 
So far I have mainly used the speed control on my D5 vario for bleeding purposes but at times when changing gpu's frequently and only running the CPU I set to 1 for utter silence.

I would agree with above a more suitable nob for adjustment would make life a little easier but not a deal breaker.
As far as OSD or controlled via fan controller is not something I have used in the past so can't really comment. However in saying that I feel it's more gimcky then functional but this is just an opinion.
 
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