Dual Core

A dual core processor is a CPU with two separate cores on the same die, each with its own cache. It’s the equivalent of getting two microprocessors in one.

In a single-core or traditional processor the CPU is fed instructions it must order, execute, then selectively store in its cache for quick retrieval. When data outside the cache is required, it is retrieved through the system bus from random access memory (RAM) or from storage devices. Accessing these slows down performance to the maximum speed the bus, RAM or storage device will allow, which is far slower than the speed of the CPU. The situation is compounded when multi-tasking. In this case the processor must switch back and forth between two or more sets of data streams and programs. CPU resources are depleted and performance suffers. In a dual core processor each core handles incoming data strings simultaneously to improve efficiency. Just as two heads are better than one, so are two hands. Adding to this favourable scenario, both AMD and Intel’s dual core flagships are 64-bit.

The dual core processors mark the most important leap in notebook/ laptop technology since the colour screen. The TravelMate 8204WLMi is the first notebook based on Intel’s new dual core mobile processor, Yonah. And Yonah personifies Intel’s new ethos ñ performance per watt. Intel has realised that the way forward is to produce fast chips that draw as little power as possible and run as cool as can be.