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How to get 24v to my PMP-450S

post #1 of 11
Thread Starter 
I was thinking of wiring up the +12 and -12v from my PSU to eek out that little extra from my PMP-450S.


Is there a simpler way to do so so that I don't have to hack up my PSU?

Mind you, I dont have any 5.25" bays in my build, I cut them out.


I have the PMP-450S with the COV-RP450 and a koolance tube res.

The only parts in my loop are an EK-Surpemacy full copper, and an EK-Coolstream XTX 360 rad.
post #2 of 11
I think I'd go 17v first...

however you are going to have connect into the ATX connector for that. I used an extender for the ATX cable and I just spliced into it. I've never wanted to mess around with my genuine ATX connector...not even making it look nice by adding the wire into the connector.
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post #3 of 11
Thread Starter 
http://www.ebay.com/itm/150999226982?hlp=false

step up converter like this might do the trick as well?
Edited by Xinoxide - 3/15/13 at 11:59am
post #4 of 11
I wouldn't buy that...not for a pump...maybe for some fans.

I would want something a bit beefier...Like this one maybe

Though I think I'd be worried about how many amps you are putting into that smaller converter than the output...the seller doesn't list the spec of it. The one I linked can take up to 15amps and look how much larger the capacitors are. So i am sure the output is better too
Edited by Vagrant Storm - 3/15/13 at 12:52pm
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post #5 of 11
Single Pump

Dual Pumps

Just hide them.
post #6 of 11
Thread Starter 
Quote:
Originally Posted by canada2005 View Post

Single Pump

Dual Pumps

Just hide them.


I really cant fit these anywhere.

Quote:
Originally Posted by Vagrant Storm View Post

I wouldn't buy that...not for a pump...maybe for some fans.

I would want something a bit beefier...Like this one maybe

Though I think I'd be worried about how many amps you are putting into that smaller converter than the output...the seller doesn't list the spec of it. The one I linked can take up to 15amps and look how much larger the capacitors are. So i am sure the output is better too

This is more along the lines of what I would like, I am sad there isnt a less pricey option ( although all options are fairly priced ) so I could jump on it now.

Ill have to temporarily wire the ground from the pump to -12v for the time being.
( I read the price wrong )

the 12v I am operating at right now is JUST over the startup voltage.

I just might jump ion this and see what I can do.
post #7 of 11
I'm in the same dilema here....

I want to put more voltage to my XSPC Rasa 750 pump/res to get a better flow rate
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post #8 of 11
Thread Starter 
I just tried with a test psu and the RPM's were the same from the pump sensor.

So I bust out my DMM and the -12v is acting as a ground on my old Antec NeoHE 500 watt...
post #9 of 11
Quote:
Originally Posted by Xinoxide View Post

I just tried with a test psu and the RPM's were the same from the pump sensor.

So I bust out my DMM and the -12v is acting as a ground on my old Antec NeoHE 500 watt...
-12V might be optional in the newer ATX specs.
post #10 of 11
Just watch the amps...the -12v in most PSUs don't have a lot of amps in them. So if you add the -12 and the +12 you will get 24v...but it probably will only have like .5 amps on the line. You need to see what your pump needs

Should hurt anything...you just might not get as much as you would by doing another method.
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My System
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CPUMotherboardGraphicsGraphics
2600K @ 4.7GHz Asus P8P67 B3 GTX 580 EVGA Hydro Copper 2 GTX 580 EVGA  
RAMHard DriveOptical DriveOS
4x4GB G.Skill Ripjaws bunch of 'em Blu-Ray For movies Windows 8.1 
MonitorMonitorKeyboardPower
24.4" Hans G HH251 X2 Yamakasi DS270  Blah 1000watt Super Flower 
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Built into Desk Microsoft SideWinder X8 Comfy one... Creative Extreme Gamer 
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