Is there a big gap between four core four thread and four core eight thread?

The gap is still quite obvious, and it is a problem of performance.

Core 4 line is to say that the CPU has 4 physical cores , so the Task Manager.

There are 4 CPU tables in it.

Core 8 line As with the previous 4 cores and 4 wires, 4 cores and 8 lines that is, use hyper-threading technology.

Imagine a physical core as two logical cores, so the task manager will show you 8 CPU tables.

3. Hyper-threading technology increases the bare die area of the (P4) processor by 5%, which can be exchanged for a 15% and 30% performance increase. But in reality, in some programs or not for multithreading.

In the case of compiled programs, hyperthreading can reduce performance. In addition, hyper-threading technology also requires the cooperation of the operating system, and ordinary systems that support multiprocessor technology may not be able to take full advantage of this technology.

4. The difference in performance is about 30, and there is a difference when playing games.

Quad core and eight threads means that the CPU consists of four cores, and the four cores can each virtualize two threads, with 8 threads.

A quad-core CPU is actually two Conroe dual-core processors packaged together, which Intel can use to improve processor yield, because if any one of the quad-core processors is flawed, the entire processor can be scrapped.

The Core 2 Extreme QX6700 is treated as four CPUs in Windows XP, but the two 4MB L2 caches belonging to two sets of cores cannot directly access each other, affecting the execution efficiency. The Core 2 Extreme QX6700 consumes 130W of power, which provides significant performance improvement in multi-tasking and multi-** applications, but lacks sufficient application software support.

Quad cores and 8 threads are 4 physics cores simulated into 8 logic cores, and 8 cores are 8 physics cores.

In some cases, such as the small amount of tasks, the CPU utilization rate can be increased a lot, so that its performance is close to the level of the octa-core CPU, and in other cases, such as the CPU occupying 100% full load, the performance gap between the four-core, eight-thread and eight-core performance is obvious, the essence of which is that although the hyper-threading technology can execute two threads at the same time, it is not like two real CPUs, each CPU has independent resources.

When both threads need a resource at the same time, one of them is temporarily stopped and the resource is relinquished until the resource is idle.

Therefore, the performance of hyper-threading is not equal to the performance of two CPUs. This is also the biggest difference between quad-core, eight-thread and octa-core.

There are 4 cores in physics, but each core can be divided into two threads at the same time, which is a virtual 8 core.

A CPU can only process one thread per unit of time (OS: thread), and it is not possible to process more than one thread per unit of time, unless it is a physical unit with two CPUs. Multi-core technology is to place multiple identical CPUs in one package (or directly make two CPUs into one chip), while Intel's HT technology is to copy only the necessary resources inside the CPU, so that the CPU can be simulated into two threads; That is, one entity core, two logical threads, process the work of two threads in one unit of time, simulating the operation of entity dual-core and dual-threaded.

Extend the above principles to:

Four cores means that the CPU has four "CPUs", and eight threads means that each CPU has two logical threads, for a total of eight threads.

A six-core and six-thread CPU is better. Intel. The six-core and six-thread is the eighth-generation Core i5, and the best four-core eight-thread is the seventh-generation Core i7

It is easy to find out the performance of the two from the CPU ladder list,In multi-core performance,i5-8500Super energy index is46,And i7-7700441,It's about 10% worse,Single-core performance,i7-7700Because the frequency is lower,Naturally, it's not as good as i5-8500,There is also a gap of about 3% between the two。

Therefore, whether it is multi-core or single-core performance, the six-core and six-threaded 8500 is stronger than the four-core and eight-threaded 7700, not to mention that it's 20% lower than the latter, and its power consumption is also lower, if you just consider the CPU, it is obvious that the six-core and six-threaded Core i5-8500 is really better than the four-core and eight-threaded Core i7-7700.

1 core, 1 thread, one lane, one-way traffic. 1 core, 2 threads, one lane, two-way traffic. The difference between 4 cores and 8 threads and 6 cores and 12 threads is that there are two more lanes of two-way traffic.

Four cores and eight threads, four cores means that there are eight cores of the CPU, the core (core) is also known as the core, which is the most important component of the CPU, and eight threads refers to the number of multi-threaded threads of the CPU has eight. Six cores and twelve threads refer to six cores, and the number of multithreaded threads in the CPU is twelve.

If the main frequency of the four-core eight-thread processor is high enough (above), it is still very good to play games, but no matter how high the main frequency is, the four-core is not able to multitask with the mainstream six-core, and it is very common to open the game at the same time, voice software, listening to songs, etc., the four-core is easy to be fully loaded, which will affect the resources allocated to the game by the processor, and there may even be serious frame drops.

Six-core is not prone to this problem,Even if the main frequency is lower,But the frame rate of most games is not much different from the high frequency four-core,After opening more software, the frame rate of the six-core game will exceed the four-core。

In addition, the mainstream processor is now six cores,**Not much more expensive than four cores,If you take into account that the host can still play the latest games after four or five years,It is recommended to choose a six-core and twelve-thread processor,At present, the more recommended is R5 3600(X),I think the comprehensive performance of this processor is the best among home processors,There is no one。

Hello! Other parameters being equal, it is better to have six cores and eight threads than four cores and eight threads.