NVIDIA GeForce GTX 880M 's Advantages
Boost Clock has increased by 6% (993MHz vs 941MHz)
More VRAM (8GB vs 1024GB)
Larger VRAM bandwidth (160.0GB/s vs 14.40GB/s)
1152 additional rendering cores
NVIDIA GeForce 825M 's Advantages
Lower TDP (33W vs 122W)