EVGA GeForce GT 520 1024 MB DDR3 PCI Express 2.0 2DVI/Mini-HDMI Graphics Card, 01G-P3-1526-KR Microsoft DirectX 11 Support 1000 MHz Effective Memory Clock and 1620 MHz Shader Clock PCI Express 2.0 GeForce GT 520 with 810 MHz core clock 1024 MB 64-bit DDR3 Memory GeForce GT 520 with 810 MHz core clock PCI Express 2.0 1024 MB 64-bit DDR3 Nemory 1000 MHz Effective Memory Clock and 1620 MHz Shader Clock Microsoft DirectX 11 Support Blu-ray 3D Support