[gmx-users] Performance of NVIDIA GTX980 in PCI-e 3.0 x8 or x16 slots ?

[Mirco Wahab]

On 11.06.2015 13:08, David McGiven wrote:
> We're finally buying some Intel E52650 servers + NVIDIA GTX980 cards.
> However, there's some servers that come with only PCI-e 3.0 x8 slots and
> others with x16 slots.
> Do you think this is relevant for gromacs performance ? And if so, how much
> relevant ?

It's more important to select PCIe 3.0 mode. Then, the difference
between 16x and 8x is imho very low (1-3%).

M.


P.S.: http://www.techpowerup.com/reviews/NVIDIA/GTX_980_PCI-Express_Scaling/