System/360 CPU characteristics*
Model Data Flow Width (bytes) Cycle Time (nanoseconds)
22 1 750
25 1 900
30 1 750
40 2 (1) 625
44 4 250
50 4 500
65 8 200
67 8 200
75 8 195
85 8 80
91 8 60
95 8 60
195 8 54

(1)  Certain registers and paths are 17 or 18 bits wide where a main storage address is processed in one cycle.
* Source: A. Pedegs, "System/360 And Beyond," IBM Journal Of Research And Development, Vol. 25, No. 5, September 1981, Table 1, p. 388.


System/360 Control storage characteristics*
Model Size(K Words) Type Cycle Time (nanoseconds)
22 4 RO 750
25 8 RW 900
30 4 RO 750
40 4 RO 625
44 none
50 2.75 RO 500
65 2.75 RO 200
67 2.75 RO 200
75 none
85 2 RO 80
0.5 RW 80
91 none
95 none
195 none

K   = 1024
RO = Read-only
RW = Read-write (writable)
* Source: A. Pedegs, "System/360 And Beyond," IBM Journal Of Research And Development, Vol. 25, No. 5, September 1981, Table 1, p. 388.


System/360 Processor storage characteristics*
Model Size (K bytes) Bus Width (bytes) Cycle Time** (nanoseconds)
22 24-32 1 1500
25 16-48 2 900
30 16-64 1 1500
40 32-256 2 2500
44 32-256 4 1000
50 128-512 4 2000
1024-8192 4 x (1-2) 8000
65 256-1024 8 x 2 750
1024-8192 8 x (1-2) 8000
67 256-1024 8 x 2 750
75 256-1024 8 x (2-4) 750
1024-8192 8 x (1-2) 8000
85 512-4096 16 x (2-4) 960
91 2048-6144 8 x 16 780
95 1024 8 x 16 180
1024-6144 8 x 16 780
195 1024-4096 8 x (8-16) 756

K   = 1024
* Source: A. Pedegs, "System/360 And Beyond," IBM Journal Of Research And Development, Vol. 25, No. 5, September 1981, Table 1, p. 388.
** Uses magnetic-core technology.

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