^ Digital signal processors, DSPs, have utilized dual-core architectures for much longer than high-end general purpose processors. A typical example of a DSP-specific implementation would be a combination of a RISC CPU and a DSP MPU. This allows for the design of products that require a general purpose processor for user interfaces and a DSP for real-time data processing; this type of design is suited to e.g. mobile phones.
^ Two types of operating systems are able to utilize a dual-CPU multiprocessor: partitioned multiprocessing and symmetric multiprocessing (SMP). In a partitioned architecture, each CPU boots into separate segments of physical memory and operate independently; in an SMP OS, processors work in a shared space, executing threads within the OS independently.
AMD HyperTransport Technology
Hyper-Threading Technology Intel
Intel First to Ship Dual Core – By Michael Singer, internetnews.com, 12 April 2005
Findings of a test carried out by Anandtech showed that dual-core chips produced by AMD and Intel had individual performance merits under different situations of application