VisionTek ATI Radeon HD 5450 512 MB DDR4  PCI Express Graphics Card 900311 (Black with Red) Microsoft DirectX 11 Support HDR Texture compression delivers an intense level visual detail without increasing graphics memory footprint with efficiency and incredible image quality Multi-threading support for DirectX 11 accelerates rendering by leveraging all the CPU cores to enable overall faster gaming performance DirectCompute improves PC performance by taking on some or all of a DirectX 11-enabled applications processing load, freeing up the computers main processor to take on additional tasks.