What does cpu multi-threading mean?

CPU multi-threading is the same as SMT.

SMT can copy the structural state on the processor, allowing multiple threads on the same processor to execute simultaneously and share the execution resources of the processor, maximizing the Realize wide-issue, out-of-order superscalar processing, improve the utilization of processor computing components, and alleviate access memory delays caused by data correlation or cache misses.

When multiple threads are not available, SMT processors are almost the same as traditional wide-emission superscalar processors.

The most attractive thing about SMT is that it only requires a small change in the design of the processor core, which can significantly improve performance at almost no additional cost. Multi-threading technology can prepare more data to be processed for the high-speed computing core and reduce the idle time of the computing core.

This is undoubtedly very attractive for low-end desktop systems. Starting from the 3.06GHz Pentium 4, all Intel processors will support SMT technology.

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