Can Stratix 10GX "1SG280LU3F50E1VG" (L-Tile, lowest Transceiver speed) device support PCIE GEN3 (8Gbps) serial interface?

"Stratix 10GX L_H_Tile_XCVR_PHY IP" uses ATX PLL for PCIE GEN3 speed. Maximum output frequency of ATX PLL is 8.7 GHz and PCIE GEN3 rate. Due to less margin between max output frequency of ATX PLL and PCIE serial rate, having doubt if lowest speed grade transceiver can support PCIE Gen3 rate. ​