Can You Install Graphics Card in Lenovo ThinkStation P620 Tower?

The 2020 Lenovo ThinkStation P620 Tower supports the following discrete graphics cards:

• P620 - 2GB GDDR5
  40W, 4 x miniDP 1.4.
• P1000 - 4GB GDDR5
  50W, 4 x miniDP 1.4.
• P2200 - 5GB GDDR5
  75W, 4 x DP 1.4.
• T600 - 4GB GDDR6
  40W, 4 x miniDP 1.4.
• T1000 - 4GB GDDR6
  50W, 4 x miniDP 1.4.
• GV100 - 32GB HBM2
  250W, 4 x DP 1.4.

• 4000 - 8GB GDDR6
  160W, 3 x DP1.4, 1 x VirtualLink.
• 5000 - 16GB GDDR6
  265W, 4 x DP1.4, 1 x VirtualLink.
• 6000 - 24GB GDDR6
  295W, 4 x DP1.4, 1 x VirtualLink.
• 8000 - 48GB GDDR6
  295W, 4 x DP1.4, 1 x VirtualLink.
• A4000 - 16GB GDDR6 with ECC
  140W, 4 x DP 1.4a.
• A5000 - 24GB GDDR6 with ECC
  230W, 4 x DP 1.4a.
• A6000 - 48GB GDDR6 with ECC
  300W, 4 x DP 1.4a.

• WX 3200 - 4GB GDDR5
  50W, 4 x miniDP 1.4.
• W5500 - 8GB GDDR6
  125W, 4 x DP 1.4.
• W5700 - 8GB GDDR6
  205W, 5 x miniDP 1.4, 1 x USB-C.
• VII - 16GB HBM2
  250W, 6 x DP 1.4.

Here are the slots that available on the mainboard:

• 4 x PCIe 4.0 x16
  full height, full length, links to CPU.
• 2 x PCIe 4.0 x8 
  full height, full length, links to CPU.
• 1 x M.2 2230 slot
  For WiFi and Bluetooth combo card.
• Up to 11 x M.2 2230/2280 slots
  2 x via onboard slots
  8 x via Quad M.2 to PCIe adapters (only supports PCIe 3.0 SSD)
  1 x via Single M.2 to PCIe adapter (only supports PCIe 3.0 SSD).

Some graphics cards might need a powerful power supply, here are the power supply that might came with your PC: