Jump to content
RESET Forums (homeservershow.com)

5v Power From Optional VGA-Out on PCI-E GPU?


Recommended Posts

So I bought this GPU for my Gep8: Sapphire AMD Radeon HD 6450 Silent 2GB DDR3


It works great.


When changing it from standard height to using the low-profile bracket, the VGA port is removed and the cable connecting it to the GPU is removed, leaving only the non-removable DVI and HDMI ports.



However, thinking about ways to draw more power, my attention was drawn to the VGA-out pins on the GPU.




According to the Pin-Out for VGA on wikipedia, Pin 9 is +5V DC and pin 10 is GND. Enough for a standard 2pin molex cable or fan connector.



Stick one end of these into pin 9 and 10 (remembering which + and - is obviously or risk breaking your card) then (or rather, before, splice a molex cable or fan header to the other end - ta-da, another 5v power.


I've bought the items, should have them by monday will post updates for all my projects and some videos etc.

Link to comment
Share on other sites

I always worry about how much current you can draw from sources like this. There may be nothing to limit the current.

Link to comment
Share on other sites



Doesn't seem like dangerous amounts really.





I found this from http://www.circuitprotection.com/04Databook/C17_video_(133).pdf :
“Devices that comply with the DDC host system standard typically provide supply voltage on pin #9 of the standard 15-pin VGA connector. The voltage is 5V ±5% and supplies a minimum of 300mA to a maximum of 1A.”

So another 5v power point right there. At least if you have a GPU with a spare VGA-out anyway. Or maybe you could just use your VGA, but you might want to use that.

Edited by paradox
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Create New...