SAPPHIRE DUAL-X R9 270X 2GB GDDR5 OC Dual DVI HDMI Display Port PCI-E Graphics Card Aimed at the slightly more budget conscious gamer, the R9 270X series is the perfect match for gameplay at 1080p with maximum settings. The SAPPHIRE R9 270X Dual-X model again features the proven SAPPHIRE Dual-X technology & delivers the best cost:performance ratio in its class. Specification: Display Support 3 x Maximum Display Monitor (s) support Output: 1 x HDMI (with 3D) 1 x Display Port 1 x Dual-Link DVI-D 1 x Dual-Link DVI-I GPU: 1020 MHz Core Clock 28 nm Chip 1280 x Stream Processors Video Memory: 2048 MB Size 256 -bit GDDR5 5600 MHz Effective Dimension: 228 (L)X109 (W)X35 (H) mm Size. 2 x slot Software: Driver CD SAPPHIRE Tri XX Utility System Requirements: PCI Express based PC is required with one X16 lane graphics slot available on the motherboard. 4X75 Watt 6-pin PCI Express power connector is required for Cross Fire X system. 2X75 Watt 6-pin PCI Express power connector is required. 4096MBMinimum of system memory. Installation software requires CD-ROM drive. DVD playback requires DVD drive. Blu-ray / HD DVD playback requires Blu-ray / HD DVD drive. 500 Watt Power Supply is required. 600 Watt Power Supply is recommended for Cross Fire X System. 64-bit operating system highly recommended