Which graphic card support?

@soumenmaji there are actually quite a few but these are the common ones:

GPU upgrade options for Lenovo ThinkCentre M82 Tower with the stock 450W power supply

GPU Power consumption Memory Req.

NVIDIA GTX 1660 Super 130 W 6 GB DDR6 *SATA to PCIe adapter

NVIDIA GTX 1660 Ti 125 W 6 GB DDR6 *SATA to PCIe adapter

NVIDIA GTX 1070 145 W 8 GB DDR5 *Dual SATA to PCIe adapter

NVIDIA RTX 3050 130 W 8 GB DDR6 *Dual SATA to PCIe adapter

• Typically, the stock power supply in a business PC does not have the necessary 6 or 8 pin connectors to power the GPU. In such cases, you may need to use a low-power GPU or a SATA to PCIe power adapter. Alternatively, you can change the entire PSU. from here

To work on your Lenovo use this ThinkCenter Hardware Maintenance Manual