Pump Noise Reduction EK DCP 4.0 Pump

OLDPHART

OLDPHART

OLDPHART

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Right if anybody is using a EK DCP 4.0 Pump (12v) use one of these Akasa 3-Pin Noise Reduction Cable. Had one handy it works a treat it has
not effected my temps at all see sig. But it dampings the pumps noise just that little bit making your case even quieter with the reduced
pump speed its cooler. Which should help the pumps reliablity and life span which can't be a bad thing.

Akasa 3-Pin Noise Reduction Cable 12V to 10V - £1.99 inc VAT

http://www.overclockers.co.uk/showproduct.php?prodid=CB-082-AK&groupid=1929&catid=153
 
Can't see the point or put one of these in series as a back up EK DCP 2.2 Pump (12v) and you'll get a small boost in performance as well.
 
I use a high rated power per channel fan controller for my 4.0, but this looks like a good option if you want to directly connect it tot he PSU and reduce noise.

The 4.0 will do the job as well as the d5 in almost all cases and will cost half the price of the d5 + top.
 
Thats not how it works. It does 1200lph if there was no restriction from a top. The EK top has reduced restriction offering up to a certain amount more flow compare to other pumps but this will still be under the maximum of 1200lph.

Also you are only comparing flow rates. The ek 4.0 pump has much higher head pressure, allowing it to pass through more blocks or travel in long lengths of tubing against mavity before the flow is reduced to a near halt.

Comparing pump specs is difficult because it depends on not only the loop restrictions but the relationship between head pressure and flow.

Flow rate specs and head pressure specs are not worth much independently but when put in practice, the win could go to either pump depending on the loop. You might find that particularly long loops which are external or have many blocks, benefit more from more head pressure and loops which have many low restriction blocks but is a relatively small loop, would benefit mroe from the higehr flow of the D5.

For the price of a D5 and top, you can get a two 4.0's and end up with more flow and head pressure and reliability. D5 may be quieter but if you take two pumps and use them at lower settings, you will probably find the dual pump set up more quiet (moot point though, as you cant really hear a D5 or EK 4.0 when turned down a notch).

There are advantages to both D5 ad an EK 4.0 but if you are talking about practicality and value, the award definitely goes to the 4.0, as it requires no top, is cheap and has more than enough grunt for four blocks in a single pump loop.
 
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Well I read that the X-Top increased hydraulic performance (up to 15 %) compared to original Laing D5 Vario, and assumed this would consequently increase the LPH of the pump.

Your right about them being hard to compare though, I thought LPH would be a good general performance indicator, can I ask where you are getting your head pressure info from?
 
Head pressure specs for different pumps can be found at competitor WCing sites and some old forum guides to choosing a pump (no link and probably lost in all the other thread).

A top cant give more flow than the pump without restriction. At most it can have no restriction and not lower the flow at all.
 
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Captain_Bosh said:
True the DCP 4.00 does the job at 800 LPH but the D5 Vario will pump 1200 LPH and thats before fitting the EK-D5 X-TOP which improves performance further.

Sources
http://www.overclockers.co.uk/showproduct.php?prodid=WC-104-EK
http://www.overclockers.co.uk/showproduct.php?prodid=WC-304-EK
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Was thinking of adding one of these in series EK Water Blocks EK-DDC 3.2 PWM (12V PWM pump) £65 add performance top.

I had the Swiftech MCP35X PWM DDC 18W Pump 1050ltre/ph : MCP35X version really good pump, adding the top breaks the warranty.

It just died after 2 years as where the cables go in they don't seal it, shorted out by corrosion building up.
 
OLDPHART said:
Was thinking of adding one of these in series EK Water Blocks EK-DDC 3.2 PWM (12V PWM pump) £65 add performance top.

I had the Swiftech MCP35X PWM DDC 18W Pump 1050ltre/ph : MCP35X version really good pump, adding the top breaks the warranty.

It just died after 2 years as where the cables go in they don't seal it, shorted out by corrosion building up.
Click to expand...

Awww, would have been been clocking buy if the story didn't end so badly!

Currently own 4 DCP 4.0's, two in this rig and one for my test bench, one for my AMD rig. The cost would have been insane if i went for D5's!

Well, the best WCing pumps are those crazy Japanese pumps (cant recall the name atm) but they cost about as much as a high end CPU loop!
 
Thanks for the explanation. I guess it depends how much pressure you need in your system as to which is the more suitable pump then. A higher flow rate rate would undoubtedly mean better temps but not so good if the pump is struggling to maintain the flow.

I was planning on running CPU block, VGA block, 140 Rad and a 240 Rad so hopefully I can get away with the one D5, if it requires 2 I'll stick with the DCP
 
That is a tiny loop!

A 4.0 will give same temps as a D5 in that situation. If the resultant flow after restrictions have been taken into account, results in the temperatures being more or else uniform all around the loop, then you stand to gain no performance with m ore flow.

Pump requirements use to be an issue when watercooling was less commercial, because everyone was using super weak aquarium pumps and blocks back then were high restriction/low flow blocks.
 
Avenged7Fold said:
Awww, would have been been clocking buy if the story didn't end so badly!

!
Click to expand...

EK-DDC 3.2 PWM (12V PWM pump) is based on the same pump as the
Swiftech MCP35X used, all Swiftech did was add the PWM function.

All l'll do this time is just check where the cable's go in and seal it if need be with the EK-DDC 3.2 PWM if l get one.
 
Avenged7Fold said:
woooh, i will look into it. I thought it was just one of the standard DDC pump variations.
Isnt there a dual pump bay combo for them somewhere?
Click to expand...

Swiftech MCP35X you can dual pump res/bay

Avenged7Fold said:
For the price of a D5 and top, you can get a two 4.0's and end up with more flow and head pressure and reliability
Click to expand...

Yes you will see a boost in flow but head pressure remains the same.

My Swiftech MCP35X coped with a i7 920:4.2GHz and SLI 670+560X60 thick Rad no problems at all with my GX58A UD5 mobo software.
The pump max rpm was about 4000rpm playing games the pump rpm was around 2700 about 700litr/Ph with good temps.

I'll might have the temps noted some where, l'll try to find them.
 
I just used a fan controller to turn the speed down when I was running a DCP 4.0.

It's an ok pump, but it's reservoir attachment isn't great (my first one eventually cracked and leaked) and it doesn't appear to be a complete seal either. I noticed a lot of evaporation from it :/
 
Nasher said:
I just used a fan controller to turn the speed down when I was running a DCP 4.0.

It's an ok pump, but it's reservoir attachment isn't great (my first one eventually cracked and leaked) and it doesn't appear to be a complete seal either. I noticed a lot of evaporation from it :/
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I don't use a attached res, "doesn't appear to be a complete seal either" explain + photo's?

Rather buy a Proper PWM Pump, even though my Swiftech PWM pump died as they did not seal where the cable's entered the pump housing. This has not put me of will get the EK PWM pump and add it in series with a EK-DDC 2.2 pump l have spare[back up].
 
might try this only got a small lop and i've got a spare corsair 7v adapter hopefully that isnt too low a voltage, on a side note got my dcp sat on a ghetto noise dampening sponge, its just a standard decorators sponge which is basically identical to the shoggy sponge middle layer and it really stops the vibration.
 
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