Quote from: mascatul on August 14, 2013, 09:41:29 AM

Hello,
I've seen a lot of rigs configurations and almost all of them have pcie 3.0 video cards on pcie 2.0 motherboards . My question is this ok ? The speed is the same ? are there any drawbacks in this solution. I'm mining litecoins for 2 months with 4 cards so i would like to make a custom rig.

Thanks

The only drawback is the input (preparation) speed. But the performance does not affect due to the Serial nature. But usually being masked when selling something new.

I just have waken up with the video below.

I have tested that carefully. It looks like the differences between x1 and x16, only input speed in general case as we are discussing Display Card , Not SAS controller.

If unsure, Here is a video which should be enough for all people.

https://www.youtube.com/watch?v=liLAfPsLtv8&feature=player_embedded (The demonstration proves the performance is not on input speed but the CU (As AMD GPU GCN includes some ARM CPUs to concentrate the true thing)itself, which differs AGP)

SAS controller may be affected due to the lanes, but still work reasonable.