PowerColor AX7750 1GBD5-DH Video Vard Graphics Cards Chipset: Radeon HD7750 Engine Clock: 800 MHz Video Memory: 1GB DDR5 Memory Clock:?4x 1125 MHz(4.5 Gbps) Bus: PCI-Express?3.0 x 16 Memory Interface: 128-bit Max. Resolution: 4096 x 2160