Will current PCI Express 2.1 x16 GPU's work with the expansions slots on my Gigabyte mb which has the following expansion slots available.
1 x PCI Express x16 slot (Note3), confirming to PCI Express 2.0 standard
1 x PCI Express x4 slot, confirming to PCI Express 2.0 standard
3 x PCI Express x1 slot (PCIEX1_2, PCIEX1_3 share with the PCIEX4_1 slot) (Note4)
2 x PCI slots
Yes, just install in your x16 slot and have fun. Not an issue at all.