Quote from: Zorg33 on November 01, 2016, 11:14:28 PM

Quote from: Spufa on November 01, 2016, 09:31:23 PM

I see a lot of server PSUs on sale for real cheap. I don't see the point in buying high end PSU anymore. All server PSU are by default 92+ efficiency and are made for 24/7 use. I found real cheap one, 800W for 20$. After a bit of modificationsi made it so it can power my GPUs.
What did I do ?
Soldered 2 pins so it stars right away when it's plugged in (there is no need for any button or anything...)
Soldered 2 wired (+ and - ) on the board and wired them outside so i can connect multiple 6-pin connectors.
How to get a lot of 6 pin connectors ? You can use 24 pin motherboard connectors from old PSUs, just cut them in peaces and connect them properly.

How all this look:
http://i.imgur.com/NvfugWx.jpg

Hope someone else will do this and save a bit of money instead of buying high end PSU !

Yes, I've been doing this for many years.

You have to observe some basic rules tho. Remember to always do the math first.
Calculate loads and wire gauges carefully.

I wouldn't do that 5-way splitting, because all the current flows through that thin wire pair that is connected to the PSU 12V and GND.
You should connect them all parallel directly to the PSU, or use thicker wires to split from. Check the temps of the main wire pair with your finger while applying load to the 6 pins. I am sure its going to get hot above 300W. If the wire is so hot that it hurts then it's too thin for that load.

Always check your setup by the junction law: SUM(I in) = SUM(I out)

Also there are high current type series terminals (I mean that white connector row). The cheaper ones can only handle 5-10Amps (120W@12V)!

Good tinkering!:)

Thanks for feedback ! But all that is already taken into consideration when this was made. All wires are high quality copper wires made for big speakers and to prevent heating all connections are soldered (on bord and between 2 cables) with more than normal amount of tin. Also tested 24 hours under 690W load and two wires were just a bit warm, far from hot.