Now what does it mean to have a dual core in a computer and what does it have to do with the CPU?

Actually, it doesn't work. It's as simple as that, it's just a CPU with 2 cores tied to it, and it's better to have a dual-channel and hard disk RAID.

In general, although the performance of dual-core processors is improved compared with that of single-core processors, considering that most of the current applications, such as office software, games, multi-core software and other applications are single-threaded, multi-tasking applications with large amounts of computing power will not be many for ordinary users (that is, general software cannot play the ability of dual cores).

Also, today's 64-bit processors don't live up to their name, but they just extend memory addressing capabilities.

There is only a slight advantage in the case of multitasking, but generally we don't even use 50% of the power of a single core, let alone a dual core. It's mostly empty.

Finally, there is an essential difference between this dual-core and the symmetrical multiprocessor of the server.

Specific information. EM64T is different from the IA-64 architecture used in Itanium 2, which is a new and completely different architecture to replace IA-32; The former, on the other hand, is based on IA-32 and extends the x86 instruction set to support 64-bit extended memory addressing, so it can also be regarded as a hybrid 64-bit instruction set.

Obviously, the EM64T is well compatible with existing 32-bit software, allowing for the transition to a 64-bit architecture in due course while retaining the existing hardware and software. For the vast majority of users, this smooth transition is undoubtedly more acceptable to them. Admittedly, 32-bit software-compatible processors naturally have to sacrifice performance compared to pure 64-bit processors, and there is certainly a considerable gap between the two in a 64-bit environment.

However, considering that the server products based on these two types of processors are aimed at completely different markets and have different application needs, there is no need for such a direct comparison.

Dual-core: Rapid performance improvementIf the EM64T is still preparing for the 64-bit computing that has not yet become a climate, and has not brought us much substantial improvement, then the dual-core architecture into the x86 processor has brought real benefits to improve the performance of the processor. As we all know, the actual performance of a processor is the total number of instructions that a processor can process per clock cycle, so with each additional core, the number of units that the processor can execute per clock cycle will naturally double.

Of course, it must be pointed out that the maximum performance of the system can only be achieved by making full use of all the executable units in both cores.

Integrate 2 cores in one processor with their own 1 and cache (there are also those with 1 and 2 caches). In terms of theoretical performance, it is 1 times the running speed of a 1-core CPU. But in fact, it is about 80% faster than the CPU of 1 core.

To put it simply, two CPUs are synthesized together. If it's four CPUs, it's quad-core.

A dual-core computer means that the computer uses a dual-core CPU. Nothing specific.

Definition of dual-core: Dual-core is simply 2 cores, and the core (Core 2), also known as the core, is the most important component of the CPU. The bulging chip in the center of the CPU is the core, which is manufactured by monocrystalline silicon with a certain production process, and all the calculations, storage commands, and data processing of the CPU are executed by the core.

All kinds of CPU cores have a fixed logical structure, and logical units such as first-level cache, second-level cache, execution unit, instruction-level unit and bus interface will have a scientific layout.

What is dual core in this paragraph?

From the point of view of dual-core technology itself, what exactly is dual-core? There is no doubt that a dual core should have two physical computing cores, and the design and application of these two cores is very much to be done. According to available information, the AMD Opteron processor was designed from the outset with the addition of a second core in mind, and the two CPU cores use the same system request interfaces, SRI, HyperTransport technology, and memory controllers, and are compatible with the 940-pin interface used by 90nm single-core processors.

Intel's dual-core, on the other hand, simply uses two full CPUs packaged together, connected to the same front-side bus. It can be said that AMD's solution is truly "dual-core", while Intel's solution is "dual-core". It is conceivable that such two cores will inevitably lead to bus contention, which will affect performance.

Not only that, but it also lays a hidden danger for the integration of more cores in the future, as it will increase the processor's contention for front-side bus bandwidth, which will become a bottleneck to improve system performance, which is determined by the architecture. Therefore, it can be said that AMD's technical architecture provides a solid foundation for the realization of dual-core and multi-core. AMD's direct-connect architecture (i.e., connecting CPU cores directly to external IOs through hypertransport technology, not through the FSB) and integrated memory controller technology make it easier for each core to have its own cache available and its own dedicated lane to directly connect to IO, without the problem of resource contention, and to achieve dual-core and multi-core.

When the number of cores increases and the processing power of the cores increases, just like the large communities developed in the suburbs of Beijing, multiple communities will definitely encounter traffic jams when they use the same urban expressway.

That is, the processor consists of two cores, and the two cores can be independently or cooperatively operated at the same time. Speed up your calculations.