Wikipedia: History of VAX

Difference (from prior major revision) (minor diff, author diff)

Changed: 11c11,13

For a while the VAX 11-780 was used as a baseline in CPU benchmarks because its speed was about one MIP?. One VAX MIP would be the speed of a VAX 11-780; a computer performing at 27 VAX MIPS would run the same program roughly 27 times faster than the VAX 11-780. Within the Digital community the term VUP (VAX Unit of Processing) was the more common term, because MIPS do not compare well across different architectures.

For a while the VAX 11-780 was used as a baseline in CPU benchmarks because its speed was about one MIP?. Entertainingly enough, the actual number of instructions executed in 1 second was about 500,000. One VAX MIP would be the speed of a VAX 11-780; a computer performing at 27 VAX MIPS would run the same program roughly 27 times faster than the VAX 11-780. Within the Digital community the term VUP (VAX Unit of Processing) was the more common term, because MIPS do not compare well across different architectures.

The VAX went through many different implementations. The original VAX was implemented in ECL, and filled more than one rack for a single CPU. The final versions were implemented in CMOS.

Added: 13a16,17

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