The POWER3 chip is a CPU that implements the 64-bit PowerPC instruction set architecture, including all of the optional instructions of the ISA (at the time). Released in 1998, it had two floating-point units, three fixed-point units, and two load-store units. It was originally supposed to be called the
PowerPC 630 but was renamed, probably to differentiate the server oriented POWER processors it replaced from the more consumer oriented PowerPC.
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