AMD Radeon R9 M380 's Advantages
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (96.00GB/s vs 48.00GB/s)
256 additional rendering cores
AMD Radeon E9173 PCIe 's Advantages
Released 2 years and 5 months late
Boost Clock has increased by 22% (1219MHz vs 1000MHz)