What is a quad-core processor? The so-called quad-core processor is based on a single semiconductor and has four equally capable processor cores on one processor, which can provide computers with more powerful performance without the need for increased power or real estate. . 
The quad-core CPU is actually a package of two Conroe dual-core processors. Intel can increase the processor yield because if there is any defect in the quad-core processor, it can cause the entire processor to be scrapped. The Core 2 Extreme QX6700 is regarded as four CPUs under the Windows XP system, but the two 4MB L2 caches belonging to the two core groups cannot directly communicate with each other, which affects the execution efficiency. The Core 2 Extreme QX6700 consumes 130W of power and has significant performance improvements in multitasking and multimedia applications, but it still lacks sufficient application software support.
Quad-core processors are ideal for intra-enterprise servers because most data centers are multi-threaded software and quad-cores can take full advantage of them. Quad-core provides good performance guarantees for running multiple tasks at the same time and creating digital content. However, in addition to game consoles and high-end model machines, desktop computers hardly require four cores. Both Intel and AMD have released quad-core processors for notebooks. However, the survey found that notebook users are more looking for larger capacity batteries and lower power consumption than multi-core. Since virtualization has become more and more important and has gained more applications, four cores are needed to support running multiple workloads on one system or multiple applications and multiple operating systems on one server. Due to the presence of quad-cores, more cores are available on one server, which reduces the number of servers required in the data center.