780ti sli x16 and x8

zqa20 · Apr 15, 2014

Hi, I'm thinking going Sli on my 780ti when the 120hz g sync 1440p monitor comes out. looking at my motherbaord, I can see my current 780ti is in a pci x16 slot and if i wanted to sli i would have to add the second in a x 8 slot. How much would this affect my fps in games?

(both the x16 and x8 and gen 3)

my mobo

http://www.gigabyte.com/products/product-page.aspx?pid=4168#ov

chris987 · Apr 15, 2014

'' The PCIEX8 slot shares bandwidth with the PCIEX16 slot. When the PCIEX8 slot is populated, the PCIEX16 slot will operate at up to x8 mode'' this is what gigabyte states! even so 2x780ti will still operate just fine. pci3 x4 would result in crippled performance!

zqa20 · Apr 15, 2014

I just checked on GPU z it says PCI-E 3.0x16@x8 1.1. Why is it running at x8 o.0? I have the 3570k

chris987 · Apr 15, 2014

zqa20 :

if you click on the question mark on gpuz you will understand

zqa20 · Apr 15, 2014

Even when i run the render test it goes to x8 v 3.0

chris987 · Apr 16, 2014

do you have your gpu installed on the upper pcie slot? if yes then it should run at x16.check through bios if it is limitted for any particular reason

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780ti sli x16 and x8

zqa20

Honorable

chris987

Judicious

zqa20

Honorable

chris987

Judicious

zqa20

Honorable

chris987

Judicious

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