ASUS STRIX GeForce GTX 980 Overclocked 4 GB DDR5 256-bit DisplayPort HDMI 2.0 DVI-I Graphics Card Chipset: NVIDIA GeForce GTX 980 Base Clock: 1178 MHz Video Memory: 4GB GDDR5 Memory Interface: 256-bit 1279 MHz Boost clock for better performance and outstanding gaming experience. Direct CU II with 0dB fan technologylets you enjoy light games in complete silence, and hardcore gaming 30% cooler with 3X-quieter performance! DIGI+ VRM with 10-phase Super Alloy Powerdelivers precise digital power for superior efficiency, reliability, and performance. GPU Tweakhelps you modify clock speeds, voltages, fan performance and more, all via an intuitive interface. GPU Tweak Streamingshare on-screen action in real time - so others can watch live as games are played.