RTX 2080 Super - Single or Dual PSU Rail?

[qwertyk1d]

I've connected and have been running my 2080 Super for a few days using just the one PSU rail cable (one connector PSU end and a 6 + 4 pin dual connector other end) and haven't noticed any weirdness but I've read in a few places that you should run two rails to the graphics card?

 

[qwertyk1d]

Single rail always better.

Why is that? I just read my PSU manual and it recommends to use two rails. Is that antiquated?

 

[qwertyk1d]

Oh gotcha. I did wonder. Will need to do some research then, might just do a test myself and see what gains I get from using two cables vs one, if any.

 

[qwertyk1d]

Rails are not cables rails btw i.e 2 pcie on one long cable, rails are the things in the psu. I have 1 strong rail but use 2 cables from psu to gpu. Two cables use the single rail in my corsair hx 620w psu.

Its all a bit spanglish to me - this is my PSU spec. Any indications to you? - https://seasonic.com/focus-gx?__cf_...jUDJPlAso7ALzSEya3EL0mkmW3Xr1ZC#specification