les spec de la carte mère sont effectivement:
CPU:
**1 x PCI Express x16 slot, supporting PCIe 3.0 and running at x16 (PCIEX16)**
* For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.
Chipset:
**1 x PCI Express x16 slot, supporting PCIe 3.0 and running at x2 (PCIEX2)**
3 x PCI Express x1 slots, supporting PCIe 3.0 (PCIEX1_1, PCIEX1_2, PCIEX1_3)
* The PCIEX1_2 and PCIEX1_3 slots share bandwidth with the PCIEX2 slot. The PCIEX2 slot becomes unavailable when a device is installed in the PCIEX1_2 or PCIEX1_3 slot.
Concrètement cela affecterait la vitesse pour les deux cartes, parce que je serais obligé de mettre la 1ere en x8 au lieu de x16 et la seconde en x2, c'est ça?