SLI output from then 2nd card on a 8x pin

[DG House]

Hey community

 

i have 2 gtx 1080s sli, the first is on a PCI-e 16x and the other on a PCI-e 8x

will there be issus or less performence when i output from the gtx theres is in a PCI-e 8x ?

( i cant switch them due to space restriction)

 

[JJCooper_]

Yes, you will loose performance if using the x8 slot. Since you have half the lanes of the x16. But is your mobo SLI compatible??? And do you have unused x16 slots. Since you mentioned something about space restrictions?

 

[DG House]

hey Cooper

i have the ASRock master SLI ^^ https://www.mindfactory.de/product_info.php/ASRock-X470-Master-SLI-AMD-X470-So-AM4-Dual-Channel-DDR4-ATX-Retail_1238526.html

my first 1080 is a 1,5 slot card

my second is a 3slot card

if i switch them they almost touch each other ( super bad air flow/ both pushers)

[JJCooper_]

But since its a SLI Mobo, it has two x16 slots. As stated in the specs of the board. So performance won't be an issue. Should run fine

 

[DG House]

yes is see it on the specs, but when i look physical at the mobo, the second slot has only half the Pins

and on the specs sheet from asrock there is a bit confusion

https://www.asrock.com/mb/AMD/X470 Master SLI/index.asp#Specification

 

i maybe have a basic falls knowledge about that

[TomvanWijnen]

8x should be virtually no performance drop. Whether using your video output from there matters at all, I don't expect it to do so, but I'm not sure.

[JJCooper_]

5 minutes ago, DG House said:

yes is see it on the specs, but when i look physical at the mobo, the second slot has only half the Pins

and on the specs sheet from asrock there is a bit confusion

https://www.asrock.com/mb/AMD/X470 Master SLI/index.asp#Specification

 

i maybe have a basic falls knowledge about that

Ah i see what you mean. I see the halved pins you were talking about. But as @TomvanWijnensaid, it won't be noticeable. 

[DG House]

ok i will give it a try with benchmarks, i let you know tommorow ^^

[JJCooper_]

Right then