Multi GPU in 16/8x slot

[Kyzer]

If a board has a 16x slot and a 8x slot, will it run in 16/8, or 8/8?

 

in specific: http://www.newegg.com/Product/Product.aspx?Item=N82E16813130790

 

I have a manual but it doesn't say anything about it.

[Glenwing]

If a board has a 16x slot and a 8x slot, will it run in 16/8, or 8/8?

 

in specific: http://www.newegg.com/Product/Product.aspx?Item=N82E16813130790

 

I have a manual but it doesn't say anything about it.

 

It will run at x8/x8 on the 970 chipset.

[petem]

If a board has a 16x slot and a 8x slot, will it run in 16/8, or 8/8?

 

in specific: http://www.newegg.com/Product/Product.aspx?Item=N82E16813130790

 

I have a manual but it doesn't say anything about it.

 

More specifically, from the MSI website: 

Slots

• 2 x PCIe 2.0 x16 slots

- PCI_E2 supports up to PCIe 2.0 x16 speed

- PCI_E4 supports up to PCIe 2.0 x8 speed

• 2 x PCIe 2.0 x1 slots

• 2 x PCI slots

 

The 970 chipset only natively supports PCIe 2.0 x 16, so a single card would be x16, but 2 would be x8, which is half the bandwidth of the PCI 3.0 spec.

That also means if you install some cards in the PCIe x1 slots, your video card(s) would get even less since the x1's would steal bandwidth from your x8's or x16