Mobile GPU

Specifications of the ATI Radeon HD 4855 GPU

ATI Radeon HD 4855 Graphics Processing Unit for desktop market segment makes use of Unified Superscalar Shader architecture, and was launched in January 2010. The GPU is built on 55 nm technology. The card has 575 MHz graphics clock frequency. It also has 640 stream processors, 32 texture units, as well as 16 color ROPs. The Radeon HD 4855 incorporates 512 MB of GDDR5 memory. Because the memory is clocked at 900 MHz, and uses 256 bit bus, the effective memory bandwidth is 115.2 GB/s. The GPU supports PCI Express 2.0 interface, and requires 2 slots on the motherboard. This model needs up to 110 Watt of power.

Below you will find more detailed specifications of the ATI Radeon HD 4855 card.