PCIe x4 Speed Issue with FPGA

FPGA Read 4KP30RGBA Data from TX1 using PCIE x4 channel.
Is the bandwidth sufficient?
TX1 PCIE x4 transmission efficiency reach more than 50%?

If you are referring to Gen-2 speeds, then, it can touch up to 12 Gbps for real data (leaving 8/10bit and protocol overheads etc…)