Power is a processor architecture produced by IBM. It's been pretty popular at times - server side it was up there with Sun Sparc in popularity, before Linux on x86 ate the server market for lunch. Client side, variants of it were in every console for one of the generations - Wii/PS3/Xbox360. As pointed out by another poster, the PowerPC variant used to be in apple hardware too.
Variations of standard Power chips are also what runs IBM's mainframes. For quite a long time they beat Intel in raw performance on some benchmarks. The problem is it was 10x the price.
The workstations and servers were always crazy expensive compared to x86 hardware and that's one reason they remained pretty niche.
Within IBM, Power systems were most frequently used to run IBM's Unix - AIX.
Variations of standard Power chips are also what runs IBM's mainframes. For quite a long time they beat Intel in raw performance on some benchmarks. The problem is it was 10x the price.
The workstations and servers were always crazy expensive compared to x86 hardware and that's one reason they remained pretty niche.
Within IBM, Power systems were most frequently used to run IBM's Unix - AIX.
https://en.wikipedia.org/wiki/IBM_Power_microprocessors