NVIDIA GeForce GTX 980M 's Advantages
More VRAM (8GB vs 4GB)
Larger VRAM bandwidth (160.4GB/s vs 96.00GB/s)
1024 additional rendering cores
AMD Radeon E9175 PCIe 's Advantages
Released 3 years late
Boost Clock has increased by 8% (1219MHz vs 1127MHz)