IBM Power Systems is a family of server computers from IBM that are based on its Power processors. It was created in 2008 as a merger of the System p and System i product lines.
2018 Sierra supercomputer, based on Power System nodes
POWER8-based IBM Power Systems E870 can be configured with up to 80 processor cores and 8 TB of memory.
IBM Power microprocessors
IBM Power microprocessors are designed and sold by IBM for servers and supercomputers. The name "POWER" was originally presented as an acronym for "Performance Optimization With Enhanced RISC". The Power line of microprocessors has been used in IBM's RS/6000, AS/400, pSeries, iSeries, System p, System i, and Power Systems lines of servers and supercomputers. They have also been used in data storage devices and workstations by IBM and by other server manufacturers like Bull and Hitachi.
Image: POWER1 RSC
Image: POWER2 MCM
Image: POWER2+ MCM
Image: P2SC+