Comparison of ASUS Dual Radeon RX 580 8G video card vs GIGABYTE Radeon RX 6800 video card by specifications and benchmarks. ASUS Dual Radeon RX 580 8G runs at 1.257 GHz base clock speed and has 8 GB of GDDR5 memory, while video card GIGABYTE Radeon RX 6800 runs at 1.700 GHz base clock speed and has 16 GB of GDDR6 memory. The TDP of the first video card is 185 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.