AMD Radeon E9390 PCIe 's Advantages
More VRAM (8GB vs 4GB)
Larger VRAM bandwidth (160.0GB/s vs 96.00GB/s)
768 additional rendering cores
NVIDIA T550 Mobile 's Advantages
Released 2 years and 7 months late
Boost Clock has increased by 53% (1665MHz vs 1089MHz)
Lower TDP (23W vs 75W)