NVIDIA Quadro M620 Mobile 's Advantages
Released 8 years and 2 months late
Boost Clock977MHz
272 additional rendering cores
Lower TDP (30W vs 189W)
NVIDIA Quadro FX 5800 's Advantages
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (102.4GB/s vs 80.19GB/s)