Does it matter what modular PSU PCIe slot I use for my GPU?

HPE 800W Flex Slot Platinum Hot Plug Low Halogen New Power psu slot To insert the new power supply, insert the block in the slot This operation can be performed while the server is powered on Check for loose astro slot PSU The same goes for be quiet! Straight Power 11

6 slot goose decoy bag I would like to connect a second GPU to my Dell Precision 5820 with a 950W PSU The problem is that each GPU needs a