Use the one cable. The two rails might experience a difference in voltage, which could be bad.
In the real world, it'll work fine at least 90% of the time, but it's easier to just use one cable on one rail.
Use the one cable. The two rails might experience a difference in voltage, which could be bad.
In the real world, it'll work fine at least 90% of the time, but it's easier to just use one cable on one rail.
The 12 pin delivers more than enough juice for that card, so the single cable will be just fine.
Okay, so in theory if I had a beefier card I'd need to use two cables, one going to 12v3 and another to 12v4? If that's the case I might wire it up like that just in case I ever decide to upgrade and I lose the cables or something.
I have the 3090 and it came with a Y shaped power connector
Possibly, but for instance my 40 series has a single power connect and uses the crazy octopus cable, so totally different. I also did not see mention of your PSU wattage. Depending on how beefy the next card is, that might need an upgrade, too. You really don't need two separate cables for that card, in terms of power draw, though.