Comparison of XFX Speedster SWFT 309 Radeon RX 6700 XT Core Gaming video card vs GIGABYTE Radeon RX 6900 XT 16G video card by specifications and benchmarks. XFX Speedster SWFT 309 Radeon RX 6700 XT Core Gaming runs at 2.321 GHz base clock speed and has 12 GB of GDDR6 memory, while video card GIGABYTE Radeon RX 6900 XT 16G runs at 1.825 GHz base clock speed and has 16 GB of GDDR6 memory. The TDP of the first video card is 230 W, and the second is 300 W. Compare the table of benchmark results to find out which graphic card is better.