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12v Pump Suggestion

post #1 of 18
Thread Starter 
Hi people smile.gif

So, i'm boring from my 24v pumps (transformers keep getting broken/losing power/***) and i wanna change them for 12v.

I m wondering if you have any advice.

Consider i don't care about how quite a pump is.. untill it's reasonable course (i mean become deaf becouse of the pump is not in my plans), i 'm looking for performaces only.

I was looking at Laing ddc 3.25 or alphacool vpp655 t12 ..because i can find them from my usual reseller (where i cane get a great discount tongue.gif) but i'm open to any suggestion.

Thank you very much and have a nice day.
post #2 of 18
Hello and welcome to the forums.

Right, to start off we'll identify the models of the pumps you have given - the Laing DDC 3.25 is an example of the DDC series of pumps, which are small square-shaped pumps that have been around for years. The Alphacool VPP655 is an example of a Laing D5 series pump, which is larger than the DDC.

Performance wise, there are some differences between the two. The DDC 3.25 is an 18 watt pump that uses a low profile 'top' designed to take up as little space as possible. Replacing the 'top' on a DDC pump will often reward you with large increases in performance, increasing the maximum pressure and flow rate due to an increase in the efficiency. The D5 is, in standard form, is a 24 watt pump, and comes either as a 'bulk' unit (pump only, no top) or with a manufacturers top with 1/2 inch barbs.

As a standard unit, the D5 is more powerful, quieter but more expensive than a DDC. However, adding a custom top to the DDC 3.25 will make it more powerful in terms of head and flow than a D5, as Martin's review suggests: http://martinsliquidlab.org/2011/04/03/koolance-pmp-450-d5-vario-pump/

I'd always recommend a D5, simply due to the fact that they're widely used and make less noise than a DDC. However, you may want to have a look at the 'Swiftech MCP35x' pump, which is basically a DDC 18w with PWM and a pre fitted top.

I hope this has been helpful. Please don't hesitate to post any more questions you may have.

Regards
Luke
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post #3 of 18
I would get the laing ddc/mcp350 with a blink of an eye, also add a custom top on it. That pump is epic but also expensive if you are buying pump + top.
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post #4 of 18
Thread Starter 
Thank you for answer firstly smile.gif

Than, well i think i ll go for D5 on my second implat: it has to cool CPU only so i think it should be good.

On the other hand i'm very unsure about the main one: there i need to cool cpu,chipset and 2 vga (well, just one atm but aother one is coming soon tongue.gif).

At the moment i'm using a Sanso PDH 054 IT9 24v .. and have to say it does the job. I'm checked for his "litle" 12v sister BUT well.. 300 l/h flow rate seems too low to me...
post #5 of 18
300 l/hr flow rate is PLENTY. That comes out to 1.3 gpm, which is good enough.
But those specs mean absolutely nothing, didly, squat, ziltsh, nada, zero.
That 300 l/hr rating is most likely without any restrictions in the way, no pressure drop, no head.

And yeah, get a D5 Vario to dial your pump speed and noise to your liking.
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post #6 of 18
Quote:
Originally Posted by PachAz View Post

I would get the laing ddc/mcp350 with a blink of an eye, also add a custom top on it. That pump is epic but also expensive if you are buying pump + top.

That's a very good pump.
But it's a bit noisier than the D5, and you could need to buy a heatsink and fan for it as well as it can get pretty hot in some cases (high water flow, low loop restriction, poor airflow)
Edited by PepeLapiu - 4/10/14 at 10:50am
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post #7 of 18
Thread Starter 
Well , thank you guys. I'll go for 2 D5. (I can buy another one in the future and split the main implant in 2 parts anyway.. if it will be required.... i'm gonna pay 2 d5 less than a single sanso anyway tongue.gif)
post #8 of 18
Unless you have an extremely restrictive loop (ram blocks, mobo blocks, several QDCs) one D5 pump is sufficient.
Two would be overkill/redundancy.
Keep in mind that a D5 tends to dump some heat in the loop, and so two pumps will double the heat dump.
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post #9 of 18
Thread Starter 
I see.
So maybe i should watercooling the pump.. and so on in an infinite loop tongue.gif

No well just joking. I think one should be enought... if not.. well see.. but don't make me think to the worst smile.gif

Honestly i ordered 2 d5 now.. i ll let u know if u care .. and thanj u very mych again.
post #10 of 18
Sure thing
thumb.gif

And btw, the D5 is, by design, water cooled.
So it runs a lot cooler than the DDC, but also dumps more heat into the loop, sonce it's well....water cooled.
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