NVIDIA GeForce GTX 680 Mac Edition 's Advantages
Lower TDP (195W vs 405W)
AMD Radeon RX 7990 XTX 's Advantages
Boost Clock has increased by 240% (3599MHz vs 1058MHz)
More VRAM (24GB vs 2GB)
Larger VRAM bandwidth (1152GB/s vs 192.3GB/s)
4608 additional rendering cores