If your motherboard has a PCI-Express slot and your graphics card uses PCI-Express slot then they are compatible. Even if the slot and the gpu is different gen PCI-E. So every PCI-E slot supports every PCI-E card, regardless of generation.
Your motherboard will support the the graphics card. The motherboard has a PCI-E gen 3 slot. The gpu is also gen 3 PCI-E.
If your motherboard has a PCI-Express slot and your graphics card uses PCI-Express slot then they are compatible. Even if the slot and the gpu is different gen PCI-E. So every PCI-E slot supports every PCI-E card, regardless of generation.
Your motherboard will support the the graphics card. The motherboard has a PCI-E gen 3 slot. The gpu is also gen 3 PCI-E.