Geek: the CDC 6600 architecture, documented...

Geek: the CDC 6600 architecture, documented...  This is a supercomputer from the late '60s, considerably more modern than the first computers I worked on (Univac 1206s), which were designed in the late '50s and early '60s.  It's interesting for a computer hardware buff to see the evolution of these machines over the 8 to 10 years between them.  The Univac 1206s had 100 kHz clock speeds and zero CPU concurrency, and the CDC 6600 had 10 times faster clocks, up to 10 concurrent CPU operations, and a tiny (27 word!) semi-conductor instruction cache – all of which combined to boost the power of the CDC 6600 to over 100 times that of the Univac 1206...