PCIe X8 vs X4 slot speeds for 10Gb fiber

x4 slot   Dan x4 slot

PCIe x16 is what your GPU should be using but you are only getting x4 which means it is operating at a quarter of it's possible bandwidth

Ultra Durable PCIe Slot • PCIe® Slot • Running 1* x16 6 Audio Noise PCIe x4 slot with Lower impedance CONNECTIVITY Dual NVMe PCIe Storage options are plentiful as well, with dual 2280 slots One slot utilizes a PCIe x4 interface for blazing-fast storage speeds,

bonus slot goldbet Pcie x16 slot into multiple x4 slots · PCIE Bifurcation · IBM 69Y5321 M4 PCIe Gen-III Riser Card 2 · Cablem ATIC PCIe x4 speed vs x8 speed vs x16 speed Tested with rtx 3060 ti