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SIMD

Author: Gabriel Torres Last Updated: December 29, 2005 Category: CPU Single Instruction, Multiple Data SIMD is a type of instruction capable of processing several data chunks at once. For example, using a 32-bit register to load and execute four eight-bit data at the same time. In this example, this task would be four times faster than manipulating the four eight-bit data individually. There are several implementations for SIMD technology, like MMX, SSE and 3Dnow. To use this technology, the processor must have a SIMD instruction set and the program must be compiled (i.e. written) using it in order to have a performance gain. Related Terms: MMX SSE Print Version | Send to Friend | Bookmark this Term

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