[SOLVED] Can i use a 3 x 8-pin 7900 XTX with only 2 x 8-pins connected to it ?

[jeffy9987]

the gpu is a xfx speedster merc310 7900 xtx black and psu is edit: 2018 model of corsair rm750x

 

[IDProG]

IMO it should work, though you can only use a maximum of 375W (150W * 2 from the 8-pins, 75W from the PCIe slot) of power.

 

[Deleted member 2731765]

can i use a 3 x 8-pin 7900 XTX with only 2 x 8-pins connected ?​

No, you shouldn't be powering any high-end GPU like that. It's NOT recommended, and it is not advisable. If it asks for 3 8-pin PIN connectors, then please insert ALL the PCIE cables.

Why do you want to use only 2 PCIe cables ? Your PSU has 4 '6+2-pin' cables for any high-end GPU.

 

[ScrewySqrl]

if you don't plug in all the power cables, it very likely won't turn on.

 

[Zerk2012]

the gpu is a xfx speedster merc310 7900 xtx black and psu is corsair rm750x

No not going to work!!!!!!!!!

 

[Colif]

wonders if this is op - link

the RM750x has 2 connectors per cable, you could just attach the 2nd one on one of the cables just to be sure.

Possible you won't get a picture without the right amount of connectors attached.

 

[jeffy9987]

wonders if this is op - link

the RM750x has 2 connectors per cable, you could just attach the 2nd one on one of the cables just to be sure.

Possible you won't get a picture without the right amount of connectors attached.

thats what i was asking. also no lol how did i miss that reddit post

 

[Colif]

i had a lose connection on a GTX 980 and the monitor would keep giving me a no signal error when the connection wasn't solid. So same thing may happen here if you didn't have the connectors it needs. Even if it doesn't use the power.

I take it black edition doesn't have RGB so it shouldn't need extra for lighting, but I think it probably runs in the OC bios by standard which might ask for more power.

 

[ak47jar3d]

Bad idea. Even if you got the card to run, power surges could exceed the limit of 2 8pins and cause issues for the card/system.

 

[jeffy9987]

i have discovered that my powersupply came with the wrong cables