NVIDIA A40 PCIe 's Advantages
More VRAM (48GB vs 16GB)
Larger VRAM bandwidth (695.8GB/s vs 200.1GB/s)
9472 additional rendering cores
NVIDIA A2 's Advantages
Released 1 years and 1 months late
Boost Clock has increased by 2% (1770MHz vs 1740MHz)
Lower TDP (60W vs 300W)