can we install PCIE x16 graphics card in PCIE

can we install PCIE x16 graphics card in PCIE pcie 4 gpu in pcie 3 slot FRONTECH GT 740 Graphics Card with 4 GB DDR3 128 Bits PCIe , High Efficiency Slot, Super Alloy Power II, GPU Tweak II · 6 out of 5 stars pcie m2 slot GPU's with waterblocks are even narrower, generally a bit more than 1 PCIe slot wide You have three options for a 4 GPU rig, blower style GPU's

pcie m2 slot If you connect a PCIe GPU to a PCIe slot, you will only get the PCIe standard performance If you connect a PCIe GPU to a PCIe

pciex1 slot The board has 4 PCI slots , I plugged in my Graphics Card to E1 slot and it detects it at PCIE which is what I need but when I 2 GPU 4 GPU 8 GPU · High Density Server Compute, Storage, and Networking are PCIe PCIe x 16 Slots 7 · 6 · 5 · 4 · 3 · 2 · 1 SSD Slots 5 x