ViewMax GeForce GTS 250 1GB GDDR3 256 Bits PCI Express (PCIe) DVI Video Card w/HDMI & HDCP Support ViewMax GeForce GTS 250 1GB GDDR3 256 Bits PCI Express (PCIe) DVI Video Card w/HDMI & HDCP Support GPU GeForce GTS 250 Core Clock 738MHz Shader Clock 1836MHz CUDA Cores 128 Effective Memory Clock 2000MHz Memory Size 1GB Memory Interface 256-Bit Memory Type GDDR3. GTS 250. Interface: PCI Express 2.0 x16. DirectX 10. OpenGL 2.1 DVI. HDTV / HDMI Out. Max Resolution: 2560 x 1600 SLI Support: 2-Way & 3-Way. Power Connector: 6-Pin. Cooler: With Fan System Requirements: 450W PCI Express-compliant system power supply with a combined 12V current rating of 24A or more Full Microsoft DirectX 10 support NVIDIA CUDA technology support NVIDIA PhysX technology support NVIDIA 3-Way SLI technology support Microsoft Windows 7 support