ATI Radeon HD 4890 's Advantages
Lower TDP (190W vs 355W)
AMD Radeon RX 7900 XTX 's Advantages
Released 13 years and 7 months late
Boost Clock2498MHz
More VRAM (24GB vs 1024GB)
Larger VRAM bandwidth (960.0GB/s vs 124.8GB/s)
5344 additional rendering cores