So I'm thinking about getting another Radeon R9 390 gpu for my computer. My power supply can handle both but I can't figure out how to power the two of them. The power supply comes with 2x6 pin and 2x1 pin with the 2x6. Do I put one one pin and one 6 pin into each or do I get a splitter?
Powering two GPUs with one PSU
- Thread starter PC___Guy
- Start date
The R9 390s typically take 1x6-pin + 1x8-pin PCIe connector. Your PSU has 6+2 pin connectors which can work either as 6-pin or 8-pin connectors if you join the two extra pins to the block of 6 pins.
Your post is unclear if you have 2x6-pin + 2x(6+2)-pin or if you simply have 2x(6+2)-pin connectors. You'll want 4 PCIe connectors. If you need to use a splitter be very careful that your PSU is actually up for the task.
6-pin connectors can handle 75W, 8-pin can handle 150W.
Your post is unclear if you have 2x6-pin + 2x(6+2)-pin or if you simply have 2x(6+2)-pin connectors. You'll want 4 PCIe connectors. If you need to use a splitter be very careful that your PSU is actually up for the task.
6-pin connectors can handle 75W, 8-pin can handle 150W.
I'm guessing you mean your PSU has two 6+2 pin power connectors? A 6+2 pin connector can be used as a 6 pin (don't plug in the extra two pin connector) or an 8 pin. I believe an R9 390 requires a 6 pin and an 8 pin connector, meaning one of those cards is already using up all your connectors. You cannot get a 2nd one without upgrading your PSU.
- Oct 31, 2015
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With a pair of 390's, you would want a 1000 watt or larger PSU with 4 PCIe connectors. If you current PSU doesn't have the proper connectors, that's a pretty good indication it's not up to the task of running them and shouldn't be used.
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