Today, AMD has refreshed its range of graphics card Radeon HD 7670, which focuses on OEM segment and is the renamed version of old accelerator Radeon HD 6670.
Under the Radeon HD 7670 is located Radeon HD 7570-based on Turks graphics processor with 650 MHz. This chip has 480 stream processors, 24 texture units, 8 ROP units and communicates with the GDDR5 memory or DDR3 128-bit interface. The video buffer volume depends on the chips type : 512 to 2048 MB in case of DDR3 (1800 MHz effective) or 512-1024 MB using GDDR5 memory (effective frequency 4000 MHz).
A step below the Radeon HD 7470 and Radeon HD 7450, which are based on the GPU Caicos, with 160 stream processors, 8 texture units and 4 rasterization units . The difference between these cards are only in the frequency of GPU (750 MHz vs 625 MHz), the video card can be equipped with GDDR5 DDR3 or in an amount of from 512 to 1024 MB and 64-bit interface.
The youngest representative will be Radeon HD 7000 and Radeon HD 7350 adapter, which is actually a renamed Radeon HD 5450 and is based on Cedar GPU. The accelerator has only 80 stream processors, 8 texture units and 4 ROP units, and can be equipped with DDR3 or DDR2 memory with 64-bit interface.