17476 What is a multichip processor?

What is a multichip processor?



What is a multichip processor?

Finally, a competitive spirit Intel came back to life. And it’s all thanks to market AMD and AMD Ryzen Epyc. Market experts highly appreciate the performance, low power consumption, the fabrication technology and of course low cost of the new line of processors from AMD. Most also wondered what hindered Intel to do the same? And because the new CPU AMD Threadripper in all respects superior to the more expensive chips from Intel.

After the market appeared a new chip from AMD, Intel representatives immediately declared that “a bunch of processors” die all at once if something goes wrong. But what is most interesting, after Intel in a variety of ways ridiculed the use of multichip technology for manufacturing processors, they decided to market the same chip.

Before I will tell you how to work new technology from AMD, let’s start from the beginning. Also note that I will try to tell simply and clearly as possible. If you are interested in tests of the cache level 3 and everything else like that, then this material is not for you.

What is a single chip processor?

For the manufacture of such processors use a large silicon wafer on which is placed a few individual processors, which in the end cut from this plate. As a result of such manipulations we obtain multiple single-chip processors. As a rule, all additional cores, graphics will be placed on a single chip.

It will all be “Packed” into a small plate which is called CPU. This technology provides fast communication between all components that is necessary for good performance.

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Процессор от Intel

But in order to increase productivity, try to reduce the technological process of manufacturing chips. Through this it is possible on a single chip to accommodate more transistors and cores, which leads to increased productivity and increased clock frequency. It also reduces the number of factory marriage, because the smaller the CPU, the lower the probability that crystal will be placed on the defective part of the silicon wafer.

But the laws of physics has not been canceled, and reduce the process to infinity will not work for anybody. That is why AMD decided to look for a way out. And found it in the form of multichip processor. They were not the first who made it, but the first who introduced this processor for the consumer market.

Now the interesting.

What is a multichip processor?

It’s all the same single-chip processors, which are interconnected through the basic technology of interconnects. This connection technology is also called “interconnect”. You may ask, why make such a CPU, if you have computers with multiple processors on a single chip?

Что такое многокристальный процессор?

The thing is that to use two processors you need a special motherboard that has two slots. And remember, I said above that the closer to each other and located components of the processor, the better the performance? So the distance between the two processors is too large for computer engineering. Moreover, such boards are often used to create servers.

In turn, multi-processors designed to be installed in a single slot on the motherboard. AMD calls this technology of connection of crystals Infinity Fabric.

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How does it work?

Put simply, the multichip processor will simply run faster than a motherboard with two processors. Interconnects components of a multichip CPU needs to work at lightning speed to see a difference in performance. And AMD managed to not only make, but to make such a product for the mass market.

Still have dignity?

In addition to speed and performance, this technology has several advantages. Fabrication of a multichip processor allows you to use the kernel smaller to eventually get a chip with more cores. And it reduces the number of defective chips in General. Reduction of production waste allows to reduce the final cost of the product for the consumer. As the saying goes, profit is obvious!

As for companies that, for example, for Apple, this technology is a godsend. Finally end time 4-core processors in MacBook and iMac. How do you think this technology is the future of processors? Whether mankind the computers that have 16 or 32 cores in the CPU?

The source: iMore

On this topic: ( from category Articles, Help the newbie )

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