IBM 360 Mod 70 picture desired.

Eric Smith eric at
Wed Jul 16 19:38:27 CDT 2008

Sridhar wrote:
> I thought the S/360/70 was just *renamed* the S/360/75 for marketing 
> reasons.

Models 60, 62, and 70 were announced in April of 1964.  During 
development, they improved the designs enough that they substantially 
exceeded the promised performance, and eliminated the reason for having 
separate models 60 and 62.  Rather than introducing the machines under 
those previously announced model numbers, which would have led to 
confusion regarding the specs, they announced them as the models 65 and 75.


More information about the cctech mailing list