Comparison of GIGABYTE AORUS Radeon RX 580 XTR 8G video card vs GIGABYTE Radeon RX 6700 XT 12G video card by specifications and benchmarks. GIGABYTE AORUS Radeon RX 580 XTR 8G runs at 1.257 GHz base clock speed and has 8 GB of GDDR5 memory, while video card GIGABYTE Radeon RX 6700 XT 12G runs at 2.321 GHz base clock speed and has 12 GB of GDDR6 memory. The TDP of the first video card is 185 W, and the second is 230 W. Compare the table of benchmark results to find out which graphic card is better.