Pascal from NVIDIA is the newest architecture, combined with Micron GDDR5X 10Gbps memory result the fastest cards on the planet (Announced June 2016)
How to choose a graphics card, simple guidelines GPU: Graphics Processing Unit
GPU, GPU clock ,GPU cores, GPU architecture, Graphics memory speed,memory interface
NVIDIA Maxwell CUDA cores are about 30% more efficient (faster in calculating) than NVIDIA Kepler CUDA cores, Fermi CUDA cores are older architecture
Memory frequency, quantity the more the better
Memory interface the wider the better 512-bit, 384-bit, 256-bit, 128-bit, 64-bit
Outputs DisplayPort 1.2 4K ( 3860 x 2140 @ 60Hz), HDMI 2.0 4K (3860 x 2140 60 Hz), HDMI 1.4 4K (3860 x 2140 @ 30Hz)