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Introduced in January 2009, ATI Mobility Radeon HD 4870 GDDR5 mobile Graphics Processing Unit utilizes Unified Superscalar Shader architecture, and is produced on 55 nm technological process. The card has 550 MHz graphics clock frequency. Furthermore, it has 800 stream processors, 16 color ROPs, along with 40 texture units. The Mobility Radeon HD 4870 GDDR5 comes with 1 GB of GDDR5 memory. Because the memory is clocked at 700 MHz, and uses 256 bit bus, the effective memory bandwidth is 89.6 GB/s. The GPU supports PCI Express 2.0 interface. For increased ATI Mobility Radeon HD 4870 GDDR5 3D graphics and gaming performance, it can be paired with a similar graphics card in crossfire mode.
More detailed specifications of the ATI Mobility Radeon HD 4870 GDDR5 graphics card are available below.