PCIE 2 x16 slots; 1 x16 running at x16 speed; 1 x16 running at x4 speed

[jamgone007]

Motherboard: Gigabyte GA H170-D3HP
CPU: i5 6500
GPU: Asus ROG STRIX RX 470 4GB; HIS RX 470 IceQ X² OC 4GB
RAM: Kingston FURY 16GB (2 x 8GB) DDR4-2400
SSD: Kingston HyperX Fury 240GB 2.5"
HDD: Seagate Barracuda 2TB 3.5"
PSU: Cougar 700W 80+ Bronze Semi-Modular
Wireless Adapter: TP-Link TL-WN881ND PCI-Express x1


The problem I currently have is my motherboard has two pcie x16 slots, but the first is running at x16 and the second is running at x4. I'm planning to do a crossfire between the two GPU's but I have no crossfire option in my AMD Software (Crimson Edition). The AMD Software recognizes that there is a second GPU, but its marked as "(disabled)". The software now has two separate tabs of the same thing indicating for both GPU's. I'm assuming that there is a problem with the second pcie slot because its running at x4. If I remember correctly the GPU needs a x8 minimum for it to run. I tried going into bios to try and switch the speeds, reinstalling the AMD driver and such. Is there a way for the second pcie slot to run at least x8?.

 

[basroil]

There is no way to change the second PCIe to x8 because it doesn't even have the proper connections!

Crossfire should run on x16+x4, only SLI needs x8


That all said, why the hell did you buy two different 470s for CF? It's cheaper to get a single 1070 and MUCH faster!