Sapphire R9 270X 4GB GDDR5 WITH BOOST & OC Dual DVI HDMI Display Port Graphics Card The R9 270X supports Direct X 11.2 & all the latest game enhancements. It has 1280 stream processors & 4GB of GDDR5 memory delivering excellent performance in all but the most extreme settings, & is considerably faster than competing solutions in this price range. Specification: Display Support 3 x Maximum Display Monitor (s) support Output 1 x HDMI (with 3D) 1 x Display Port 1.2 1 x Dual-Link DVI-D 1 x Dual-Link DVI-I GPU Up to 1020/ Boost: Up to 1070 MHz Core Clock 28 nm Chip up to 1280 x Stream Processors Video Memory 4096 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 Accessory Cross Fire Bridge Interconnect Cable DVI to VGA Adapter 6 PIN to 4 PIN Power Cable x 2 HDMI 1.4a high speed 1.8 meter cable (Full Retail SKU only) 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