EVGA GeForce GTX 980 4GB SC GAMING, Silent Cooling Graphics Card 04G-P4-2982-KR Virtual Reality Ready DirectX12 Ready Gamestream to NVIDIA SHIELD EVGA GTX 980 delivers incredible performance, unmatched power efficiency, and cutting edge features. EVGA's 24/7 Technical Support; Base Clock: 1241 MHz / Boost Clock: 1342 MHz Memory Clock: 7010 MHz Effective; CUDA Cores: 2048; Memory Detail: 4096MB GDDR5 Memory Bit Width 256 Bit / Memory Speed: 0.28ns / Memory Bandwidth: 224.3 GB/s Recommended PSU: 500W or greater power supply