Did you read your link? Even that article says the IBM 801 is considered to be the first RISC. And since you're citing Wikipedia, look at the entry for Cocke:

Did you read your link? Even that article says the IBM 801 is considered to be the first RISC. And since you're citing Wikipedia, look at the entry for Cocke: https://en.wikipedia.org/wiki/John_Cocke https://en.wikipedia.org/wiki/John_Cocke Also, even though PowerPC is gone, IBM is still very much relevant in high-end RISC development -- they still make POWER computers.