AMD Radeon R9 390 X2 's Advantages
More VRAM (8GB vs 4GB)
Larger VRAM bandwidth (345.6GB/s vs 112.0GB/s)
1664 additional rendering cores
AMD Radeon RX 560 896SP 's Advantages
Released 1 years and 10 months late
Boost Clock1175MHz
Lower TDP (45W vs 580W)