11/03 11/04 11/05 11/20 11/34 11/34c 11/40 11/60 11/45 11/55 11/70
----- ----- ----- ----- ----- ----- ----- ----- ----- ----- -----
Perf(1) 1 2.8 2.5 3.1 3.5 7.3 3.6 27 41 36
core 13
mos 23
Bipolar 41
Whets 26 18 13 20 204 262 57 592 725 671
core 260
mos 335
Bipolar 362
(1) performance is for the basic instruction set relative to the 11/03
From a chart in the 1987 "PDP-11 Systems Handbook"
11/23 11/53 11/73 11/83 11/93
----- ----- ----- ----- -----
CPU F-11 J-11 J-11 J-11 J-11
Microcycle(ns) 300 267 267 222 222
Clock (MHz) ? 15 15 18 18
Performance 0.2 0.5 0.7 1.2 1.4
(11/70 = 1)
Cache no no yes yes no
Floating-Pt opt no no yes yes
Coprocessor
NOTE: The 11/93's memory was effectively all cache, so there was no need for a separate cache subsystem.
NOTE: The 11/93 vs. 11/70 factor was taken from the "PDP-11 20th Anniversary Systems and Options Catalog Supplement", May 1990.
And by merging the data from both charts, sorting by model number:
50 -
P r 45 _
e e 40 - -
r l 35 | -
f a 30 | _
o t 25 | -
e i 20 | -
m v 15 _
a e 10
n 9
c t 8
e o 7 - -
6
f 1 5
a 1 4 _ _
c / 3 - _ -
t 0 2
o 3 1 -
r 0_________________M_o_d_e_l_s___________________
0 0 0 2 2 3 3 4 4 5 5 6 7 7 8 9
3 4 5 0 3 4 4 0 5 3 5 0 0 3 3 3
c
Sorting by introduction date gives:
P r 45 _
e e 40 - -
r l 35 | -
f a 30 | _
o t 25 | -
e i 20 | -
m v 15 _
a e 10
n 9
c t 8
e o 7 - -
6
f 1 5
a 1 4 _ _
c / 3 - _ -
t 0 2
o 3 1 -
r 0_________________M_o_d_e_l_s________________
2 4 4 0 7 5 0 0 3 6 3 2 7 5 8
0 5 0 5 0 5 3 4 4 0 4 3 3 3 3
c
[I was tempted to label the vertical index of the chart in PUPs (PDP-11 Units of Performance), but resisted the temptation. :-) -MMcC]
Also, from the table of UNIBUS-PDP-11s performances the micro-cycle timings for the machines listed there :
11/03 11/04 11/05 11/34 11/40 11/45 11/60
u-cycle 400 260 300 180/ 140/ 150 170
(ns) 340 200/
300
Generally, earlier model PDP-11s with odd numbers are OEM machines and even-numbered ones are end-user machines. [11/15, 11/35, 11/05, (but not 11/45 or 11/55) vs. 11/20, 11/40, 11/10, 11/34, 11/44, 11/70]. This carried on in a variation to the later model numbers where the odd numbers became Q-Bus machines aimed at OEMs and the even-numbered were UNIBUS machines were intended for end-users. Thus the Qbus 11/03, /23, /53, /73, and /93 are aimed at OEMs and the UNIBUS 11/04, /24, /54, /7?, and /94 are aimed at the end-user market.
Most of the PDP-11 line bore the standard cyan (maroon) and magenta (purple) colors. The /55 and some of the integrated systems were blue and green, as were the DEC-10 FEP 40's and some later front-panel-less /70's. The 11/60 came in the low boy (VAX) style. The 11/34 and the later UNIBUS (/24, /44) came in the white single fronts.