Specs: GPUGeForce® GTX 970 CUDA cores: 1664 Video Memory: 4GB GDDR5 Memory Bus: 256-bit Engine Clock Base: 1076 MHz Boost: 1216 MHz Memory Clock: 7010 MHz PCI Express3.0 Display OutputsDisplayPort 1.2: 4K @ 60Hz HDMI 2.0: 4K @60 Hz 2 x DL-DVI: 2560x1600 HDCP Support: Yes Multi Display Capability: Quad Display Recommended Power Supply: 500W Power Consumption: 145W Power Input: 2 x 6-pin DirectX12 API feature level: 12_1 OpenGL4.5 CoolingDual Fan Slot SizeDual slot SLI4-way Supported OSWindows 10 / 8 / 7 / Vista Card Length203.96mm x 111.15mm This GPU is in excellent conditon and works well, it had its fans replaced a little while ago because the originals stopped spinning, but the new ones work very well.