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2 PSUs 1 PC

post #1 of 7
Thread Starter 
I have an HP with a stock 400w PSU and I have a dell psu with 320w of power. My X1600PRO I just ordered requires a 420w PSU under full load on a system so i think that 320w will take care of it. I wanted to know if it was possible to run 2 power supplies synchronously in one pc so that i can run JUST MY X1600 off of the dell PSU and the rest of the PC from the stock 400w.

Is it even possible to run a graphics card off of a seperate PSU, plugged into a MoBo PCIe thats wired to a different one.

I know about the green black wire trick but i want to know if i can have them both turn on and off at the same time during startup and shutdown. and how to do so if possible

THANKS MUCH

Also if there is a different way to hook up the PSUs please tell me, i would go but one but im really tight for money right now. thanks
    
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1075T ASUS M4A88TD/USB3 EVGA GTX470 8GB A-Data DDR3-1600 
Hard DriveOSMonitorKeyboard
2x 250GB WD Blue, SATA3 Windows 7 Professional 24" 1920x1080 Logitech G19 
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650w Corsair TX Antec 900 Logitech Mx518 
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CPUMotherboardGraphicsRAM
AMD Phenom II X6 1075T ASUS M4A88TD/USB3 EVGA GTX470 8GB A-Data DDR3-1600 
Hard DriveOSMonitorKeyboard
2x 250GB WD Blue, SATA3 Windows 7 Professional 24" 1920x1080 Logitech G19 
PowerCaseMouse
650w Corsair TX Antec 900 Logitech Mx518 
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post #2 of 7
Did you even try searching through the FAQs?

http://www.overclock.net/faqs/15751-...two-power.html
Elite
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Elite
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CPUMotherboardGraphicsRAM
IBM PPC Triple core @ 3.2GHz Custom ATi Xenos 10MB 
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120GB DVD ROM XBox 360 Dashboard Dell 24" 2405FPW 
PowerCase
Big Honkin One Black 
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post #3 of 7
Well, I wouldn't run the graphics card from the second, the few stories that I've heard about it havn't been so well, usually dead cards.

Try something like running the CPU, motherboard, and graphics card from the 400w, And everything else that needs powering run off of the 320w.
post #4 of 7
Thread Starter 
i know how to do that i wanted to know if my pc could tirn them on at the same time with no extra switches
    
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1075T ASUS M4A88TD/USB3 EVGA GTX470 8GB A-Data DDR3-1600 
Hard DriveOSMonitorKeyboard
2x 250GB WD Blue, SATA3 Windows 7 Professional 24" 1920x1080 Logitech G19 
PowerCaseMouse
650w Corsair TX Antec 900 Logitech Mx518 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1075T ASUS M4A88TD/USB3 EVGA GTX470 8GB A-Data DDR3-1600 
Hard DriveOSMonitorKeyboard
2x 250GB WD Blue, SATA3 Windows 7 Professional 24" 1920x1080 Logitech G19 
PowerCaseMouse
650w Corsair TX Antec 900 Logitech Mx518 
  hide details  
Reply
post #5 of 7
Yes it can! Here's what you do:
  1. Get two wires, Length enough to get from the 20-pin on the main power-supply to where the other will be.
  2. Run one wire from the only Green wire on the 20-pin connector, To the Green pin on the second PSU. (Into the back of the connector of your main PSU as to not block it from being used and into the front of the secondary as it will not be in use.)
  3. Run a black wire from any of the Black pins on the main to any of the Black grounds on the Secondary and insert it.
  4. Tape everything up and your good.
post #6 of 7
Do you have any pics of this? I'm pretty sure I understand but pics always clear things up perfect.
K.B. Killer
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K.B. Killer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core 2 Duo E6550 Asus P5N-D MSI 4870 2 x 1GB Patriot DDR2 800 
Hard DriveOSMonitorKeyboard
Seagate 320GB SATAII Windows 7 x64 Ultimate Samsung 205BW 20"WS HP Internet 
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Enermax Liberty 500W CM 690 Logitech optical 
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post #7 of 7
Pretty busy right now, I'll grab a few pictures later.
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