Pumps in serial: DDC vs D5

Several things.

1. Its not widely reguarded as 1 gpm is the ideal as its dependant on size, pressure and number of components in a loop. As each of these factors change dramatically per build setting a general outline is moronic.

2. Flow rate doesn't corrilate to lower temps. Only if the flow rate slows to a point its no longer effective to move hot water into the rads to cool it.

3. You need to post system specs now as its hard to put any clarity to this issue unless you do. The Pwm header that goes into the mobo isn't putting all the direct current into the pump as thats done via molex. the header is only controling the signal speed.
 
almighty15 said:
So they're PWM pumps then?

Either that or you're pushing a lot of wattage through a small motherboard header.



Not as low as they should be considering the radiator's I have.
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NO NOT PWM FOR THE LAST TIME, a 3 pin fan header can be voltage controlled by bios, also modem mother boards can take 15w no problem.

and that don't give me an answer did it, what your your load temps
 
I have swiftech 35x 2760rpm (lowest possible to be sure it will start with system power up, 53% lamptron touch)
f037e9a20bf94287gen.jpg
Still can hear it though.
 
DataVampire said:
Great.
Any idea of flow rate ?
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Not yet as not plugged the Aquaero back in but easily over 1GPM.

The pull is so much the reservoir is actually struggling to keep them fed with fluid!

The loop has taken a full bottle of fluid now though where as before it only took just over half so the extra power has helped to push the air out the system.
 
Just plugged the Aquaero in real quick and low rate is now 1.1GPM

That's up from the 0.8GPM I had before, so that's a 30% increase, that's with a single 18w and a single 10ww DDC though as my other 18ww DDC died. If they were both 18w DDC's flow rate would be even higher. :(

Might move to PWM pumps.

One problem that I now have is the reservoir is struggling to feed the pumps resulting in the pumps constantly sucking in air which is affect flow rate :(

So need to order a bigger reservoir.
 
nice. but bare in mind the flow will slow down to constant lower number once it has settled down.(well it normally does anyhow)

So it looks like when I can afford it I wil be moving to ddcs which will be way into the new year
 
You can run the DDC 18W with a modified connector so that it has a 3-pin fan header (or get convertor here if you prefer) but you need to be sure that your motherboard can supply 18W from that fan header without burning out. If you're plugging two in, you also need to make sure there isn't a global limit - ie one header can provide say 20W but the total of all the headers cannot exceed say 30W.

3-pin header can certainly do speed control by reducing the voltage. I've just plugged my DDC 18W into an Aquero 6 as its fan channels can handle the 18W of power to control the pump. Before that, I just had it running on 7V on a modified molex connector. It starts quite happily even on that low voltage.
 
I can confirm dual ddc(serial) are crazy. very quiet, pwm regulated, insane flow and performance.
Some pics..

Nickel plated bottom:
IMG_2025.jpg


Braided cables(will change the connectors to black soon)
IMG_2032.jpg


Filling the loop(Old build)
IMG_2034.jpg


New build(still not finished)
DSC00857.jpg


:)
 
Uncle Petey said:
What's going on with the rad arrangement at the bottom?
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well, theres ek 240mm rad there, push-pull.
I recently bought msi 295x2 which comes with aio water cooler. I had to place the 120mm rad(295x2) somewhere and this is the only place where to put it, due to having 2x140mm in the front and 1x140 at the back of the case.
So now its sp120/ek rad/sp120/295x2 rad/sp120.
(sp120=corsair sp120 fan)

I will be adding this card to my custom loop any time soon,hopefully:)
 
Yeah, I know what it all is :)
I was just wondering why you'd sandwiched it on the 240. It really isn't the best way of doing things and a lot of 295x2 owners swear by having the rad above the card for best results too.

I'm sure it'll be fine until you get it in the loop, but what was stopping you from putting it in the rear fan location?
 
Uncle Petey said:
Yeah, I know what it all is :)
I was just wondering why you'd sandwiched it on the 240. It really isn't the best way of doing things and a lot of 295x2 owners swear by having the rad above the card for best results too.

I'm sure it'll be fine until you get it in the loop, but what was stopping you from putting it in the rear fan location?
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140mm hole spacing. I have a 140mm fan there(Corsair af140) and theres no way how to mount it there...
Temps arent the issue now rly, getting 61-62C max while gaming, usually around 55C. This is all good considering I use Sapphire 295x2 OC bios not the stock one for now :)

Waiting for the backplate for kryographics Vesuvius R9 295X2(active XCS) to get the most of the card cuz vrms get rly hot with more voltage.

23608_3.jpg
 
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