Skylake chipset lanes and GPU configs

[Fgtfv567]

Can GPUs use Skylake chipset lanes if they run out of CPU lanes? So you could have 3 or 4 way GPU setups?

Could chipset lanes act as CPU lanes?

[shypin]

well some motherboard manufactures include 3rd party controllers to increase the pcie lanes supported

 

so i guess it depends on the motherboard

[CostcoSamples]

I don't think so.  The chipset lanes are designed for other stuff, which is good if you have a PCIe SSD.  This way you can still use all 16 lanes for GPU, and use the other lanes for your SSD.  And you can still technically do 3 way SLI, but you'll be running at x8, x4, x4  - could be a tiny bit of a bottle neck at x4, but with the horrible scaling of 3 way SLI, it probably is not noticeable.

[Aniallation]

Can GPUs use Skylake chipset lanes if they run out of CPU lanes? So you could have 3 or 4 way GPU setups?

Could chipset lanes act as CPU lanes?

Chances are only some motherboards will be able to, through use of a PLX chip

[souruser]

Can GPUs use Skylake chipset lanes if they run out of CPU lanes? So you could have 3 or 4 way GPU setups?

Could chipset lanes act as CPU lanes?

 

Check out the EVGA Z170 Classified, 40 lanes for quad SLI. The ASRock OC Formula appears to have extra for its 3 M.2 sockets.