ASUS 4GB Graphics Cards R9290-4GD5 Gigantic 4GB GDDR5 memory for the best gaming experience & the best resolution GPU TWEAK provides real-time and intuitive tweaking and easier overclocking. PCI Express 3.0 Delivers double bandwidth per lane of PCIe Gen 2 for faster GPU - CPU communication DirectX 11.2 brings new levels of visual realism to gaming on the PC and get top-notch performance.