Kernel Ryzen 10% less cores Skylake and technologically more efficient

Kernel Ryzen 10% less cores Skylake and technologically more efficient

Compare processors Intel Skylake and AMD Kaby Lake Ryzen forehead-to-forehead is not so easy, because the first significant part of chip area is integrated graphics. But at the conference International Solid State Circuits (ISSCC), AMD has published the official specifications, which is comparison of x86 processor cores implemented in Intel Skylake version and the same kernel AMD — version Ryzen.

From the shown data it's seen that-Ryzen is about 10% smaller area on chip than the core Skylake. Analysts and engineers while Intel confirmed that the architecture Zen, of course, is competitive. Alas, too many unknowns exist, closed from the common eye and ear, and it is difficult for us to judge, will the 10 % significant value in terms of cost of production of the crystals Ryzen, although AMD now will not prevent any savings. It is hard to say, this achieved the advantage of the square — only by optimizing the arrangement of transistors on a chip or something interesting lies in the architecture, if you compare Zen and Skylake.

It is not excluded that AMD had to concede to the complexity of the units of execution of such instructions, like AVX, as evidenced by previously published table, in which Zen is about two times inferior to the Kaby Lake when you work with AVX2. The processor is able to combine 128-bit AVX modules, but the payoff for the AVX2 speed penalty in number of cycles in instruction. But if you deviate from the topic, Intel recognizes that the technology AMD with their new CPU architecture is not inferior to her. In particular, Zen was able to achieve a 15% reduction in capacity when switching transistors and capacitors the design is transferred on the basis of MiM (metal-insulator-metal, metal-insulator-metal). MiM technology is used by AMD for the first time.
More than a third of the crystal is integrated graphics
Among other things, the MiM technology allows to decrease the power and provide more fine control over electrical and frequency parameters for each core on a common crystal. This is a hardware software technology SenseMI, which we have already told the readers. As for the structural organization of Zen architecture, the new kernel really has two 128-bit FMAC module (combined unit multiply-accumulate, fused multiply-accumulate).

For the execution of instructions AVX2 he has to combine these blocks. Fortunately, before the situation when the efficiency of the processor in the market is determined by its ability to quickly work with a set of instructions AVX2, still very far away. The set architecture is fully supported, and plans for AMD include at least a four-year development of architecture Zen. It is possible that in the iteration Zen+, in addition to the planned growth of the IPC, we will see and extension modules up to 256-bit FMAC. These instructions are more widely used software systems for multimedia processing, and the time is right, because the Cannonlake architecture Intel is going to support AVX-512. We don't think AMD wants to give Intel in this matter, but so far this case is quite distant future. And today it is clear that AMD managed to create not just a competitive processor architecture, but in some ways ahead of Intel technologically, and it costs a lot, given the size and capabilities of the Blue Giant.

Kernel Ryzen 10% less cores Skylake and technologically more efficient cpuid hwmonitor
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