thermal paste on GPU PCIe connector and inside motherboard's

Here's the best way I've found and seen of modifying a PCIE x1 slot to fit a full-sized x16

I wanted to put my graphics card on the second PCIe slot of my Asus Rog Strix-F x470 Reviewing video guides, it seems that people

pcie x16 expansion slot Comments · PCI_E1: PCIe x16 · PCI_E2: PCIe x1 · PCI_E3: PCIe x8 This is the second x16 physical slot on the board

pcie slot for gpu 2 GPU 4 GPU 8 GPU · High Density Server Compute, Storage, and Unlock the latch of the PCIe slot easily when remove the graphics card in the PCIe slot