Connecting GPU-RISER-PNU

vaaalor · 4 May 2021 at 11:20

Hello
i need help, i wanna connect 3x gpu(by 8pin) and 3x risers(by 6pin)
i wanna connect it to PSU like that
1x 8pin - Gpu 1660super - directly to PNU
1x 8pin - Gpu 1660 super- directly to PNU
1x 8pin - Gpu -1660 super directly to PNU

1x 6pin - riser - directly to PNU
1x 6pin - riser - directly to PNU
1x 6pin - riser - directly to PNU

I have PNU MSI MPG A750GF is it safe to connect it as i show on picture? please help
https://imgbb.com/pJ3Nkzw

mickyflinn · 4 May 2021 at 13:12

Yes it fine Looks correct to me.

vaaalor · 4 May 2021 at 13:21

i heard that sata port has lover voltage, so thats why i ask

mickyflinn · 4 May 2021 at 14:31

It does but its enough to power the riser otherwise it wouldnt be an option.

vaaalor · 4 May 2021 at 14:32

but u mean that the output from psu is had limited voltage? or only sata cable has limited voltage

mickyflinn · 4 May 2021 at 15:08

vaaalor said:
but u mean that the output from psu is had limited voltage? or only sata cable has limited voltage

No i mean the sata power connecter reduces the strain on the psu instead of using the 6 pin pcie connector.

LuckyBenski · 8 May 2021 at 02:01

Bad idea. You do not know what the pin arrangement is in the peripheral/SATA connectors on the PSU. SATA and Molex power carries ground, 5V and 12V. SATA power should also carry 3.3V. PEG (PCIe graphics) connectors are just 12V and ground.

More importantly - your PSU did not come with any cables that will connect the peripheral connectors to a 6-pin PEG.

Technically your PSU should be rated to supply power to 3 graphics cards but it sounds like you don't know what you're doing. I recommend more learning first. Power supplies are the worst things to mess about with, especially modular ones with confusing connectors. In short, RTFM first.