Overclock.net › Forums › Components › Power Supplies › Powering Graphics card from another PSU
New Posts  All Forums:Forum Nav:

Powering Graphics card from another PSU

post #1 of 11
Thread Starter 
Hello OCN,

I have a situation. For this next coming week i have been allowed by my job to take home a Dell Optiplex 980. The Core i7 in it is nice (i havent been able to get a computer with one yet >.>) but the graphics card is lacking. I thought about putting my own graphics card into the computer but the dell PSU doesnt have the 6 pin PCI-e adaptor i needed, nor does it have any molex to use the adaptor that came with the card.

So my question is, can i take my other computer, put them side by side and plug in the 6 pin from my original computer/psu into the graphics card, and turn on both computer at the same time to get the power to the graphics card i need, or would that in turn cause a short and break the computer. I wanna make sure it would work before trying it out, because i do not have the money to buy another one for work lol.

Thanks for you time.
post #2 of 11
Why not just put your psu in the dell? Do you need to have your computer running as well?
post #3 of 11
Thread Starter 
The dell PSU has its own connections to the motherboard that are not compatible with the power supply i have. As is with everything dell makes. And i would need to have my original computer running as well to get the power to the card itself
post #4 of 11
What you have described above WILL work, assuming the PSU in the supplier computer is powerful enough and that it's turned on before the Dell.
Marshmallow
(14 items)
 
Corsair H100 - Excellent Compact Cooler
Corsair Hydro Series H100 Extreme Performance Liquid CPU Cooler (CWCH100)
 
CPUMotherboardGraphicsRAM
Core i7 920 @ 4.0GHz - 1.21v EVGA Classified X58 Asus GTX 580 DirectCU II 6GB Mushkin Blackline 
Hard DriveCoolingOSMonitor
Corsair F60 + 1TB Spinpoint F3 Corsair H100 Windows 7 Ultimate x64 Asus MK241H 24" 1920x1200 
KeyboardPowerCaseMouse
Das Model S Professional Silent Antec BP550 Plus NZXT Phantom Razer DeathAdder 
  hide details  
Reply
Marshmallow
(14 items)
 
Corsair H100 - Excellent Compact Cooler
Corsair Hydro Series H100 Extreme Performance Liquid CPU Cooler (CWCH100)
 
CPUMotherboardGraphicsRAM
Core i7 920 @ 4.0GHz - 1.21v EVGA Classified X58 Asus GTX 580 DirectCU II 6GB Mushkin Blackline 
Hard DriveCoolingOSMonitor
Corsair F60 + 1TB Spinpoint F3 Corsair H100 Windows 7 Ultimate x64 Asus MK241H 24" 1920x1200 
KeyboardPowerCaseMouse
Das Model S Professional Silent Antec BP550 Plus NZXT Phantom Razer DeathAdder 
  hide details  
Reply
post #5 of 11
As long as the card gets power, it'll be fine.
kaoru
(19 items)
 
kirino
(10 items)
 
 
CPUMotherboardGraphicsRAM
Zosma 960T SABERTOOTH 990FX Radeon HD 6850 SAMSUNG 
Hard DriveHard DriveHard DriveHard Drive
Seagate Barracuda 250GB Western Digital WD Green WD20EARX 2TB ST2000DM001 Western Digital Scorpio Black WD1600BEKT  
Optical DriveCoolingOSOS
LITE-ON 24X DVD Writer GentleTyphoon 2150 x3 Windows 8.1 Professional Windows 7 Professional 
MonitorPowerCaseOther
SyncMaster P2370HD CORSAIR CMPSU-550VX  Fractal Design R4 HighPointTech Raid Controller 4320 
CPUMotherboardGraphicsRAM
AMD A8-3850 Llano BIOSTAR A75MH AMD Radeon HD 6550D G.SKILL Ripjaws 
Hard DriveCoolingCoolingOS
Western Digital Black Scythe SCKBT-1000 Kabuto BitFenix Spectre Pro 120mm Fan - White LED Windows 7 Professional 
PowerCase
Corsair CMPSU-430CXV2 Dell Dimension 2300 Case 
  hide details  
Reply
kaoru
(19 items)
 
kirino
(10 items)
 
 
CPUMotherboardGraphicsRAM
Zosma 960T SABERTOOTH 990FX Radeon HD 6850 SAMSUNG 
Hard DriveHard DriveHard DriveHard Drive
Seagate Barracuda 250GB Western Digital WD Green WD20EARX 2TB ST2000DM001 Western Digital Scorpio Black WD1600BEKT  
Optical DriveCoolingOSOS
LITE-ON 24X DVD Writer GentleTyphoon 2150 x3 Windows 8.1 Professional Windows 7 Professional 
MonitorPowerCaseOther
SyncMaster P2370HD CORSAIR CMPSU-550VX  Fractal Design R4 HighPointTech Raid Controller 4320 
CPUMotherboardGraphicsRAM
AMD A8-3850 Llano BIOSTAR A75MH AMD Radeon HD 6550D G.SKILL Ripjaws 
Hard DriveCoolingCoolingOS
Western Digital Black Scythe SCKBT-1000 Kabuto BitFenix Spectre Pro 120mm Fan - White LED Windows 7 Professional 
PowerCase
Corsair CMPSU-430CXV2 Dell Dimension 2300 Case 
  hide details  
Reply
post #6 of 11
Well either way, I don't see why it wouldn't work. Don't take my word for it though as I'm no PSU guru.
post #7 of 11
You just need to have the psu that's powering the GPU to be on first, the GPU shouldn't draw power unless the dell computer is on.
    
CPUMotherboardGraphicsRAM
i7 970 4.15 @ ~1.39v HT ON, Turbo Off EVGA x58 3x SLI 2x EVGA GTX 980 SLI (watercooled), 1x EVGA GTX ... 6 GB 1600 OCZ DDR3 Gold Edition 7-7-7-18 @1475Mhz 
Hard DriveOptical DriveOSMonitor
Samsung 840 SSD 250GB, 2xSamsungF3 1TB (Raid0) 22x Super Multi, 8x Blu-ray Reader Windows 7 Ultimate x64 2x Yamakasi Catleap Q270s (2560x1440) 
PowerCaseMouseAudio
Kingwin 1000w Platinum HAF 932 Black Interior Logitech G500 Logitech Z5500 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7 970 4.15 @ ~1.39v HT ON, Turbo Off EVGA x58 3x SLI 2x EVGA GTX 980 SLI (watercooled), 1x EVGA GTX ... 6 GB 1600 OCZ DDR3 Gold Edition 7-7-7-18 @1475Mhz 
Hard DriveOptical DriveOSMonitor
Samsung 840 SSD 250GB, 2xSamsungF3 1TB (Raid0) 22x Super Multi, 8x Blu-ray Reader Windows 7 Ultimate x64 2x Yamakasi Catleap Q270s (2560x1440) 
PowerCaseMouseAudio
Kingwin 1000w Platinum HAF 932 Black Interior Logitech G500 Logitech Z5500 
  hide details  
Reply
post #8 of 11
Thread Starter 
Yeah, the supplier is powerful enough, its a 750w PSU, its just that none of the connectors line up with the dell or are compatible, and dells PSU does not have the connectors to hook it up either.

Also, thanks for the answers, it will really help me out, besides the fact i have to have 2 computers on at once.

Knew you guys could solve it
post #9 of 11
It should work, but you can bypass the motherboard and just jump the second PSU instead of having both computers on at the same time.
Mixed Bag
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 6950X 4600Mhz ASUS Rampage V Edition 10 1080 Ti FE HyperX 12-13-13 @2400Mhz 
Hard DriveCoolingOSMonitor
Samsung 850 EVO Corsair H100i GTX Windows 10 x64 ASUS ROG PG279Q Black 27" 
KeyboardPowerCaseMouse
Corsair K95 RGB EVGA SuperNOVA 1000 P2 Corsair Air 540 Corsair RGB 
Mouse Pad
Some naked Anime with a plump butt 
  hide details  
Reply
Mixed Bag
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 6950X 4600Mhz ASUS Rampage V Edition 10 1080 Ti FE HyperX 12-13-13 @2400Mhz 
Hard DriveCoolingOSMonitor
Samsung 850 EVO Corsair H100i GTX Windows 10 x64 ASUS ROG PG279Q Black 27" 
KeyboardPowerCaseMouse
Corsair K95 RGB EVGA SuperNOVA 1000 P2 Corsair Air 540 Corsair RGB 
Mouse Pad
Some naked Anime with a plump butt 
  hide details  
Reply
post #10 of 11
It's a bad idea for a number of reasons, especially if they're cheap power supplies with group regulation, as with only a +12V load on such a PSU you may see the +12V drop to 11.3-11.6V, 11.4V being the minimum of the specification. That can cause serious instability.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Power Supplies
Overclock.net › Forums › Components › Power Supplies › Powering Graphics card from another PSU