My son has an Optiplex 2010 i7 (3rd series) with 16GB RAM and an AMD Radeon HD 7750 1GB DDR5 GPU running Windows 7 from an SSD. He bought a GeForce GTX 1060 3GB GDDR5 which didn't fit and so we squeezed it into another Optiplex (990 i7 2nd series) also with 16GB RAM running Windows 10 from an...