← Back to context Comment by mortja 10 hours ago So in a sense the 8087 was the first 64 bit CPU? 4 comments mortja Reply matja 10 hours ago I wouldn't say so, because it was a co-processor: e.g., it depended on the 8086 to even generate addresses for memory operations.I think the IBM 7030 Stretch CPU (from 1964) would be a likely contender for being one of the first 64-bit CPUs. kens 10 hours ago The Cray-1 (1976) was probably the first 64-bit CPU. kragen 10 hours ago https://en.wikipedia.org/wiki/64-bit_computing#64-bit_data_t... names Stretch from 01961 as the first natively 64-bit CPU, but maybe there are some that are even older? kens 9 hours ago I forgot about the IBM 7030 Stretch (1961), which was also 64 bits. The NORC (Naval Ordnance Research Calculator) (1954) had 16 decimal digits, which is sort of 64 bits.
matja 10 hours ago I wouldn't say so, because it was a co-processor: e.g., it depended on the 8086 to even generate addresses for memory operations.I think the IBM 7030 Stretch CPU (from 1964) would be a likely contender for being one of the first 64-bit CPUs.
kens 10 hours ago The Cray-1 (1976) was probably the first 64-bit CPU. kragen 10 hours ago https://en.wikipedia.org/wiki/64-bit_computing#64-bit_data_t... names Stretch from 01961 as the first natively 64-bit CPU, but maybe there are some that are even older? kens 9 hours ago I forgot about the IBM 7030 Stretch (1961), which was also 64 bits. The NORC (Naval Ordnance Research Calculator) (1954) had 16 decimal digits, which is sort of 64 bits.
kragen 10 hours ago https://en.wikipedia.org/wiki/64-bit_computing#64-bit_data_t... names Stretch from 01961 as the first natively 64-bit CPU, but maybe there are some that are even older? kens 9 hours ago I forgot about the IBM 7030 Stretch (1961), which was also 64 bits. The NORC (Naval Ordnance Research Calculator) (1954) had 16 decimal digits, which is sort of 64 bits.
kens 9 hours ago I forgot about the IBM 7030 Stretch (1961), which was also 64 bits. The NORC (Naval Ordnance Research Calculator) (1954) had 16 decimal digits, which is sort of 64 bits.
I wouldn't say so, because it was a co-processor: e.g., it depended on the 8086 to even generate addresses for memory operations.
I think the IBM 7030 Stretch CPU (from 1964) would be a likely contender for being one of the first 64-bit CPUs.
The Cray-1 (1976) was probably the first 64-bit CPU.
https://en.wikipedia.org/wiki/64-bit_computing#64-bit_data_t... names Stretch from 01961 as the first natively 64-bit CPU, but maybe there are some that are even older?
I forgot about the IBM 7030 Stretch (1961), which was also 64 bits. The NORC (Naval Ordnance Research Calculator) (1954) had 16 decimal digits, which is sort of 64 bits.