Sunnyvale (CA) - Today, AMD announced two new ATI Mobility Radeon HD 4000-series GPUs for notebooks, the HD 4830 and HD 4860, both built on ATI's new 40nm process technology and both supporting DDR3, GDDR3 and GDDR5 memory support (GDDR5 more than doubles graphics memory bandwidth over GDDR3). The GPUs sport 640 stream processors in a die size that is nearly the same size as the previous mobile near high-end 4670 chip, which had 320 stream processors. Power consumption shows a nearly 50% increase in performance per watt, resulting in a slight overall increase under maximum load, but a near doubling of mobile compute performance to 832 Gflops compared to 4600-series (up from 432 Gflops), and down slightly from 880 Gflops in 4800-series though on less power.
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Source: TGDaily