Hybrid processor AMD Carrizo designed as a graphics processor

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POSTER: computer news   ||   HYBRID PROCESSOR AMD CARRIZO DESIGNED AS A GRAPHICS PROCESSOR	DATE:2015-02-24
Sam Naffziger came to work in AMD in 2006.  It was reported that he immediately became the head of the company's development center in Fort Collins.  By the time the Indian unit in Bangalore AMD is quite different in the development of the next processor architecture company, which we know under the name of Barcelona.  How it ended, it is known to all.  Since 2006, AMD began to fall on all fronts.  Well, except for the graphics.  .  Mr. Naffziger began to create what later became known as Bulldozer and other  technology AMD.  It is unlikely that the name of the new architecture has been chosen randomly.  Sam Naffziger,  developed processor Intel Itanium.   Now for the processors Carrizo.  Underlying these are computational core APU Excavator.  But from processors Kaveri trends will vary not only architecture cores (at Kaveri - Steamroller).  We have already reported that the design of the crystal Carrizo, AMD took advantage of a library, with more dense placement of transistors.  It is reported that in the design of the CPU to use the skills and tools, resulting in the design of the block GPU.  AMD graphics cores are compact enough and are energy efficient, so it was decided to move the design experience for the whole GPU processor.  It turned out, according to the documents, not bad.  The number of transistors in the composition of Carrizo increased by 29% to 3.1 billion. A slight increase in chip area (total 250 sq. Mm).  Earlier it was reported that the chip area decreased by 23%, but it is now evident, it has been a decrease in the area of individual blocks. Another important point is that  Carrizo - this is the first single-chip assembly in its class.  The structure of APU also moved south bridge (Southbridge / FCH).  In this, AMD ahead of Intel, whose bridges Broadwell not included in the crystals.  The Company understands that it is possible cores significantly inferior to Intel (and expects to close the gap in the future), but the graphics and integration of the components it goes ahead of competitors. Separately, we note that for the production of SoC important is the relative ease of production.  Assemblies are available with a smaller number of metal layers than traditional processors.  When designing Carrizo number of layers is reduced from 13 to 9. The disadvantage here is that which the smaller layers, the worse the heat transfer from the chip (apparent frequency limit).  But there are lots of positive aspects - a reduction in the lengths of the connecting lines, increased exchange rate and lower consumption.  In fact, in Carrizo generation in TDP 20 W company was able to squeeze 8 cores GPU, while the generation Kaveri in the TDP placed only 6 cores GPU.   Related Products :

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