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2 Power Supplies?

G

grandfatman

Limp Gawd
Joined
Sep 6, 2012
Messages
188
Okay, so I think most of us have the random "2 am" moment or thought, and this came to me last night after just re running the cabling through my pc to make it tidier.

I did a quick google and a guy has done it, but with a mod

http://www.overclock.net/t/15751/info-can-i-use-two-power-supplies-with-one-computer

However i was thinking, that, without even doing this mod and just if i was to plug (i havent got it yet) A new FX card into a power supply all on its own, or power the motherboard seperatley using the extra supply, Would i gain anything? is it possible? Would i destroy anything? Being able to do this would open up my options to purchasing a better graphics card. Just a random thought, what are peoples experiences / opinions on this matter?
 
Without a mod the power supply that is not connected to the motherboard will not turn on. The mod is to turn the power supply on.
 
That was my inital thought, The power button on my current pc, is a molex "through" connector which is what seems to turn the power on, if i connected this to two power supplies would it work? (veryy new to this)

The connector isnt connected to anything else, but that means the two power supplies somewhere down the line would be physically connected together, Hard to explain without pics, i may strip it down later and take a couple
 
I did that before in my last rig with a daisy chain adapter:

http://www.legitreviews.com/article/1698/1/

I used the one in the first pic with 3 24 pin plugs and it worked well, but there was a delay from 1 PSU powering on and off and the other. I had my high end GPU plugged into the secondary PSU since my main wasn't strong enough. When I shut the computer down I would get a loud half second screech from the GPU because that PSU shut down a fraction sooner than the other so the GPU thought it wasn't getting power.

It looks like the second thing is what you are looking for.
 
To turn on an ATX power supply you need to bridge the green wire to any black wires found on the 20/24 pin connector. This is what motherboard will do to trigger the power supply, and you can do it manually.

Some people do power the GPUs off a seperate PSU, especially if their power requirements go beyond the PSUs availible (especially as some of the larger units beyond 1kw can be more expensive than 2 smaller ones). All you need to do is link the 24 pins green wires and a black wire (you can buy adapters to do this). It's generally advised to power all the GPUs off one PSU if you are doing multiples.
 
This has been fairly simple to do with recent changes to high-end workstation and game machines. Just go to a site such as FrozenCPU.com and look for a power supply bridge/connector for duel power supplies. You will of course have to have both of them connected to an AC outlet and have cables for each unit.

NOTE: Make sure your outlets are up to code and a good 20amp rated or better, not 15amp. Also, they must be properly grounded which you should test with a simple plug in tester to check ground and polarity. The wiring also should be 12AWG for the outlets you have your PC on. Otherwise, you do run a risk and it would not be up to code for what is safe.
 
TechJeff said:
This has been fairly simple to do with recent changes to high-end workstation and game machines. Just go to a site such as FrozenCPU.com and look for a power supply bridge/connector for duel power supplies. You will of course have to have both of them connected to an AC outlet and have cables for each unit.

NOTE: Make sure your outlets are up to code and a good 20amp rated or better, not 15amp. Also, they must be properly grounded which you should test with a simple plug in tester to check ground and polarity. The wiring also should be 12AWG for the outlets you have your PC on. Otherwise, you do run a risk and it would not be up to code for what is safe.
Click to expand...

If the computer is going to actually use that many amps. Most people just want to add another PS since they already have a small PS, and are not going to pull much power.
You can have a 100000W PS, but if you only use 600w, then your good. hehe
 
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