OptiPlex 7090 Tower in full working condition. Just had it for a project that never took off, so hardly used it. There is an option to increase the RAM to 32GB. The PC does take all the way up to 128 GB.
Specifications
Intel Core i7 vPro Processor 10th Generation Intel Core i7- 10700K (8-Core, 16MB Cache, 3. 8GHz to 5.1GHz, 125W)
7090 MTP.Heatsink,125W
M.2 2280 1TB PCIe NVMe Class 4 0 Solid State Drive
16GB DDR4 RAM. For extra cash, can upgrade to 32 GB (it's capable of holding 128 GB DDR4 max RAM)
OptiPlex 7090 Tower with 500W Power Supply (Platinum)
Intel Wi-Fi 6 AX201 2x2 (Gig+) + Bluetooth 5.2
8x DVD+/-RW/RAM 9.5mm Slimline Optical Disk Drive