Almost simultaneously with the official premiere of the new 3D-accelerator AMD, Company Diamond Multimedia, which specializes in the production of graphics and sound cards extensions for PCs, announced the start of sales of products - Diamond ATI Radeon HD 4890 and Diamond ATI Radeon HD 4890 Overclocked Edition (XOC).
Card Radeon HD 4890 and HD 4890 XOC equipped memory GDDR5, operating at a frequency of 975 MHz. Clock frequency of the kernel 55-nanometer graphics processor AMD RV790 is the first model reference value of 850 MHz processor and AMD RV790 XT, used in the HD 4890 XOC, frequency 1000 MHz (for other data, the frequency of memory and the kernel HD 4890 XOC comprise 1050 and 925 MHz, respectively).
Other new features include support for DirectX 10.1 and CrossFire X, the existence of connectors Dual-link DVI-I (two) and Video Out (c it is possible to obtain a composite signal, S-Video and HDTV). Cards equipped with interface PCI Express x16 2.0, and took two seats in the PC casing. In the online shop of 3D-accelerator Diamond ATI Radeon HD 4890 XOC (4890PE51GXOC) costs $ 300.