Question regarding dual GPUs on H87M PRO motherboard

Average Nerd · April 9

I currently run a RTX 2070 Super on the asus H87M PRO motherboard in my folding rig, and I want to add my GTX 1060 3GB in there as well.

Now, the problem is that the second PCIe x16 slot is only wired for x4 mode, so my question is if the 1060 will be able to run reasonably fast or if the slot bandwith is just too low.

I can't test it, because my PSU (EVGA 600 BR) doesn't have enough PCIe power connectors to power both cards, and I would like to know if this will even work (properly) before I buy a new PSU.

Current specs:

CPU: i7 4790K

MB: asus H87M PRO

RAM: 8GB DDR3 1600 (can upgrade to 16GB if necessary)

GPU: RTX 2070 Super

PSU: EVGA 600 BR (600W)

OS: Debian 12

Thanks in advance!

Hellowpplz · April 9

5 minutes ago, Average Nerd said:

I currently run a RTX 2070 Super on the asus H87M PRO motherboard in my folding rig, and I want to add my GTX 1060 3GB in there as well.

Now, the problem is that the second PCIe x16 slot is only wired for x4 mode, so my question is if the 1060 will be able to run reasonably fast or if the slot bandwith is just too low.

I can't test it, because my PSU (EVGA 600 BR) doesn't have enough PCIe power connectors to power both cards, and I would like to know if this will even work (properly) before I buy a new PSU.

Current specs:

CPU: i7 4790K

MB: asus H87M PRO

RAM: 8GB DDR3 1600 (can upgrade to 16GB if necessary)

GPU: RTX 2070 Super

PSU: EVGA 600 BR (600W)

OS: Debian 12

Thanks in advance!

Well it wouldn't not work, however it would bottleneck it. Not as much as you think however! Still miles better than not having it. You would be surprised what kind of slots people have used! Would still get ~70-80% of the performance I would say. Could be more but don't wanna say anything without first-hand experience. Just lots and lots of goofy videos!