Question XfX 7900xtx speedster merc 310 triple 8 pin connection

[Gunnm123]

Would it be best to use three separate pcie cables or use a 3 way splitter? Does it even matter? Would there still be equal power delivery with either option?

 

[Aeacus]

Would there still be equal power delivery with either option?

7900 XTX is 355W GPU. PCI-E 8-pin power cable is rated for 150W. You WILL melt the PCI-E 8-pin power cable if you split it 3-way at the end, just to populate all 3x 8-pin PCI-E connectors on GPU. That, and no PSU is able to deliver all 355W through single PCI-E 8-pin cable.

Use three dedicated power cables to power the GPU.

 

[Tag1Oner]

Unless your PSU specifically says it can deliver 300W on each PCI-e cable coming out of the supply side, but it shipped with much heavier cables than most supplies I've used. If the PSU mfg. says it's ok you shouldn't have an issue splitting one of the cables to 2 on the card as long as you don't use some janky 3rd party splitter, but you'll still need another for the last power connector. If you have 3 cables and nothing else to do with them and free plugins on the PSU I'd just run them straight because I'm lazy. Unless you're on a threadripper or epyc you won't be plugging in another high draw video card anyway (lack of enough lanes and the motherboard probably doesn't have enough 8 pin CPU PWR connectors, so no point in saving the things in case you install something else... I've never seen anything but a GPU that required a 6 or 8 pin connector. The Superflower 1600W Ti I'm using allows from the supply on each port, and they sell an adapter that's one of the Gen 5 12VHPWR on one end and 2x 8-pin PSU on the other which I got rather than try to hang 4 connectors off my 4090 and find somewhere to tape them up so they weren't pulling on it.

Mine usually hovers around 3GHz boost and I didn't change anything there. I don't use it much anymore since getting the 4090, was hoping I could set it as the Houdini OpenCL card but it apparently has stupid problems when headless and silently crashes mid-compute. Will probably open the computer up to clean dust and take it out soon since I won't be getting that 5090 any time within the next decade; if I'm lucky I'll find another 4090 for MSRP while the scalpers and people who I'm pretty sure like to do things like pay over new sticker price for a used car if the dealer tells them it's hard to find work out the 5090s and $4000 payments for them amongst themselves.