Gigabyte nVidia GeForce GTS450 1 GB DDR3 2DVI/Mini HDMI PCI-Express Video Card GV-N450D3-1GI Chipset: GeForce GTS450 Engine Clock: 783 MHz Video Memory: 1GB DDR3 Memory Clock: 1800 MHz Memory Interface: 128-bit GIGABYTE Ultra Durable 2 Materials - Ultra Cooling Low RDS MOSFET Design - Lower Power Loss Ferrite Core Choke - Longer life All-Solid Capacitor Design Custom Massive 100mm Fansink for maximum performance at whisper silent operation Features 2x DVI-I / mini-HDMI outputs with HDCP Protection Core Clock: 783MHz - Memory Clock: 1800MHz Supports NVIDIA SLI / 3D Vision / CUDA / PhysX Technology Minimum recommended Power Supply 400W with one 6-pin PCI-E power connector I