ATI Mobility Radeon HD 3870 's Advantages
Lower TDP (55W vs 122W)
NVIDIA GeForce GTX 780M 's Advantages
Released 4 years and 11 months late
Boost Clock797MHz
More VRAM (4GB vs 512GB)
Larger VRAM bandwidth (160.0GB/s vs 54.40GB/s)
1216 additional rendering cores