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There were 64-bit CPUs long before there were 64-bit microprocessors. I don't know what the first was, but the IBM 7030 was a 64-bit machine in 1961. (My first
by kps 12y ago
There were 64-bit CPUs long before there were 64-bit microprocessors. I don't know what the first was, but the IBM 7030 was a 64-bit machine in 1961. (My first computing job, as a co-op, involved testing a UNIX emulation environment for the 64-bit Control Data 180 series, in 1985.)
- fulafel 12y agoWell, Alpha and MIPS (and some supers before them) had 64 bit addressing to handle more than 4 GB of address space. The 7030 had just a handful of memory and no vm, through it did have a 64 bit word size. ARM and x86 have been able to handle 64 bit numbers without anyone claiming they're 64 bit.