AMD Radeon RX 6900 XT 's Advantages
Released 5 years and 7 months late
Boost Clock has increased by 143% (2250MHz vs 925MHz)
More VRAM (16GB vs 2GB)
Larger VRAM bandwidth (512.0GB/s vs 153.6GB/s)
4096 additional rendering cores
AMD Radeon R9 270 1024SP 's Advantages
Lower TDP (150W vs 300W)