Do you have to swich to gen1 in bios for risers?

[gt_addict]

Looking to switch to using risers for my little hobby rig. Currently two cards in the mobo pcie slots. Bios settings are auto, would i need to switch to gen1 settings in the bios if i wanted to use other cards in in the regular/smaller pci slots?

Mobo is Asrock Z270 Pro4.

Cheers.

[Vann]

It depends on the motherboard and how many cards you have. You should use the highest PCI-E  setting that is compatible with board. With multiple cards using all the PCI-E slots, some boards will only work if it's set to GEN1 or GEN2.

[gt_addict]

Ok so when i get more cards and use risers ive basically got to try it and see what happens lol. Currently using the two PCIe3 16x slots but have three PCIe3 x1 slots i can use aswell.

All settings are set to auto so i suppose ill give it ago when i finally get more gpus. Just thought i would ask to see if there was a definitive answer   

[car1999]

the setting of my 7 cards rig is gen2, ,works well.