During its presentation on the International Solid State Circuit Conference 2010, AMD has revealed some details in regards to its first Fusion processor.This CPU, or Accelerated Processing Unit, short APU, as AMD brands the chip, will be the manufacturer's first to combine a CPU and a GPU in a single die. As of yet, APU is cidebaned Llano, part of both the mobile 'Sabine' platform, as well as the 'Lynx' desktop platform.
With Llano, AMD wishes to skip a step competitor Intel made with its current Clarkdale and Arrandale series. These processors combine a CPU with a GPU, but consist of two seperate dies, manufactured using two production processes; respectively 32 and 45 nm. Llano's design concept is similar to Intel's Sandy Bridge processor, to be introduced next year.
Llano is to adopt the architecture of the current Phenom II and will be produced using a 32 nm SOI High-K Metal Gate process, allowing each processing core to consist of over 35 million transistors on a surface of only 9,69 mm2. The power consumption is limited to a range of 2,5 to 25 watt for each core, dependent on the clock frequency, which could run into the 3 GHz range. Also present apart from its four cores is 1 MB of L2 cache memory for each core, as well as a DDR3 memory controller and an Evergreen-derived videochip. These chips are currently used in the Radeon HD 5000 series and support DirectX 11 and hardware-accelerated video. Llano will not use any shared L3 cache.
Interesting for future notebooks is that the APU uses several new power saving features, including one called power gating. Power gating allows the system to disable one or multiple cores, reducing their power consumption to virtually non-existant. It's also possible that the remaining cores will then run at a higher clock frequency, similar to Intel's Turbo Boost.
The first Llano APU samples are to be shipped in the first half of this year, after which they will reach OEM-manufacturers in early 2011.
Source:www.hardware.info
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