Z590 Motherboards Feature PCIe Gen 4.0 Compatibility Only With 11th Gen Intel Rocket Lake Core i9, Core i7, Core i5 CPUs Jan 3, 2021 11:17 EST Two weeks from now, Intel and its board partners will be introducing their brand new Z590 (500-series) motherboards which would offer full support for 11th Gen Rocket Lake Desktop CPUs. The key feature of these boards aside from the next-gen CPU support would be advanced I/O features and full support for PCIe Gen 4.0 protocol. Intel Z590 Motherboards Only Offer PCIe Gen 4.0 Compatibility When Running 11th Gen Rocket Lake Core i9, Core i7, & Core i5 Desktop CPUs, Not Supported By Comet Lake Refresh Core i3 CPUs