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Can i pluck a "4 Pin Molex To 8 Pin PCI-E Adapter Cable" into my PSU to power my fans?

post #1 of 7
Thread Starter 
Can i pluck this(image below) in to my PSU?

http://compare.ebay.com/like/140479839705?var=lv&ltyp=AllFixedPriceItemTypes&var=sbar
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post #2 of 7
Thread Starter 
I read online on how this "4 Pin Molex To 8 Pin PCI-E Adapter Cable" work - purpose is to draw power from the molex connectors to power up a graphic card. I have 7 corsair fans daisy-chained to a power distribution circuit and i am seeking to link this power distribution circuit directly to the PSU. So...my question....can i pluck in the 8-pins PCI-E adapter into my PSU and then link up the molex to my power distribution circuit to power up my 7 corsair fans?? Thanks.
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post #3 of 7
You can and while I'm normaly against these kind of adapters since to how they are wired and the type of cheap wiring they normally used this one should be fine.
But there is a catch as you can figure powering from the 8 pin limits you to 12V so all that goes to the adapter is 12V and Ground no 5V so unless you run this into a fan controller your fans will be forced to run at 12V (which is noisy if you have high rpm fans)
post #4 of 7
Thread Starter 
Hi maarten12100, thanks for the insight. I am running 7 Corsair SP120 High Performance Edition fans off a power distribution circuit bought from ModMytoy. So far i know, the power distribution circuit just helps to distribute power to all the 7 fans and have no control functions. Hence, all of my 7 Corsair fans gonna runs at 2350RPM whenever i switch on my PC. Am i right?
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post #5 of 7
Quote:
Originally Posted by overclockerz View Post

Hi maarten12100, thanks for the insight. I am running 7 Corsair SP120 High Performance Edition fans off a power distribution circuit bought from ModMytoy. So far i know, the power distribution circuit just helps to distribute power to all the 7 fans and have no control functions. Hence, all of my 7 Corsair fans gonna runs at 2350RPM whenever i switch on my PC. Am i right?
If the circuit doesn't cut it just connects it to all the fans then yes they are gonna run at 12V and therefor 2350RPM (likely 2500RPM as they always run a little above specs on clean 12V since the 12V spec starts at 11.4V(if I'm correct))
post #6 of 7
Thread Starter 
Hi...it failed to draw power....PSU refuse to power up if i pluck in the adaptor.
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post #7 of 7

How many 12V rails does your PSU have? What card are you installing? What is the amp rating for your PSU?

 

We need more details to help you.

 

However, if it is the same rig as your rigbuilder shows, then use the original 8-pin PCI-e connector

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Overclock.net › Forums › General Hardware › General Processor Discussions › Can i pluck a "4 Pin Molex To 8 Pin PCI-E Adapter Cable" into my PSU to power my fans?