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Document ID: DETR-3UFNUA

PS/1 - Memory Matrix for PS/1 Computers

Applicable to: United States


I. SIMM Types:
Type 1: Proprietary, 100ns,
Type 3: 72 PIN x 36 Bits, 70/80 ns, gold leads
Type 4: 72 PIN x 36 Bits, 60/70/80 ns, tin leads
Type 5: 72 PIN x 32 Bits, 70/80 ns, gold leads
Type 6: 72 PIN x 32 Bits, 70/80 ns, tin leads
Type 7: 30 PIN x 9 Bits, 80 ns, gold leads

II. Models and best match memory
Model

2011-?01 Type 1 2MB
2011-?34 Type 1 2MB
2121-??? Type 1 2MB 4MB
2123-??? Type 3 1MB 2MB 4MB 8MB
2133-?11 Type 3 1MB 2MB 4MB 8MB
2133-?13 Type 3 1MB 2MB 4MB 8MB
2133-?43 Type 7 1MB 4MB (4 or 8 required)
2133-G50 Type 7 1MB 4MB (4 or 8 required)
2133-?53 Type 7 1MB 4MB (4 or 8 required)
2155-?14 Type 3 1MB 2MB 4MB 8MB
2155-?44 Type 7 1MB 4MB (4 or 8 required)
2155-?54 Type 7 1MB 4MB (4 or 8 required)
2155-P57 Type 7 1MB 4MB (4 or 8 required)
2155-P71 Type 7 1MB 4MB (4 or 8 required)
2155-?76 Type 7 1MB 4MB (4 or 8 required)
2155-?78 Type 7 1MB 4MB (4 or 8 required)
2133-G46 Type 4 1MB 2MB 4MB 8MB 16MB
2133-S45 Type 4 1MB 2MB 4MB 8MB 16MB
2133-W42 Type 4 1MB 2MB 4MB 8MB 16MB
2133-M40 Type 4 1MB 2MB 4MB 8MB 16MB
2133-G49 Type 4 1MB 2MB 4MB 8MB 16MB
2133-S47 Type 4 1MB 2MB 4MB 8MB 16MB
2133-W45 Type 4 1MB 2MB 4MB 8MB 16MB
2133-M46 Type 4 1MB 2MB 4MB 8MB 16MB
2155-G52 Type 4 1MB 2MB 4MB 8MB 16MB
2155-S50 Type 4 1MB 2MB 4MB 8MB 16MB
2155-W48 Type 4 1MB 2MB 4MB 8MB 16MB
2155-G72 Type 4 1MB 2MB 4MB 8MB 16MB
2155-S70 Type 4 1MB 2MB 4MB 8MB 16MB
2155-W67 Type 4 1MB 2MB 4MB 8MB 16MB
2155-P74 Type 4 1MB 2MB 4MB 8MB 16MB
2155-S75 Type 7 1MB 2MB 4MB (4 or 8 required)
2155-G82 Type 4 1MB 2MB 4MB 8MB 16MB
2155-S80 Type 4 1MB 2MB 4MB 8MB 16MB
2155-W77 Type 4 1MB 2MB 4MB 8MB 16MB
2155-P84 Type 4 1MB 2MB 4MB 8MB 16MB
2168-G57 Type 4 1MB 2MB 4MB 8MB 16MB
2168-S55 Type 4 1MB 2MB 4MB 8MB 16MB
2168-W52 Type 4 1MB 2MB 4MB 8MB 16MB
2168-G87 Type 4 1MB 2MB 4MB 8MB 16MB
2168-S85 Type 4 1MB 2MB 4MB 8MB 16MB
2168-W82 Type 4 1MB 2MB 4MB 8MB 16MB
2168-P89 Type 4 1MB 2MB 4MB 8MB 16MB
2133-S48 Type 4 1MB 2MB 4MB 8MB 16MB
2155-Z33 Type 4 1MB 2MB 4MB 8MB 16MB
2133-D50 Type 4 1MB 2MB 4MB 8MB 16MB
2133-D53 Type 4 1MB 2MB 4MB 8MB 16MB
2133-46M Type 4 1MB 2MB 4MB 8MB 16MB
2133-51D Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2133-14C Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2133-13T Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2133-11E Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2133-19C Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2133-18T Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2133-16E Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2133-17A Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2133-28A Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-24C Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-22T Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-20E Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-43C Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-41T Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-39E Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-62C Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-60T Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-48E Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-46V Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-66V Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-76C Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-74T Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-72E Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-86C Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-84T Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-82E Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-81A Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2166-88V Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2168-37C Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2168-33T Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2168-31E Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2168-66C Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2168-64T Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2168-61E Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2168-28V Type 6 1MB 2MB 4MB 8MB 16MB 32MB
2168-68V Type 6 1MB 2MB 4MB 8MB 16MB 32MB

III. Technical Notes
A. With the exception of the 2123-???, all PS/1's can accept double sided
SIMMs.

B. 4MB, 72 pin, 32 bit SIMM resistor pinout:
Pin 72 = connected
Pin 71 = not connected
Pin 70 = connected
Pin 69 = connected and resistored
Pin 68 = connected and resistored
Pin 67 = connected and resistored

C. The systems that utilize the Type 6 32 bit SIMMs are designed to accept Type 4 36 bit SIMMs as an alternative. In practice,
PS/1 support has had poor results with 36 bit SIMMs larger than 4 MB in these units.

Search Keywords

Hint Category

Memory

Date Created

18-06-96

Last Updated

10-12-98

Revision Date

10-12-2002

Brand

IBM Aptiva

Product Family

Aptiva, PS/1

Machine Type

2011, 2121, 2123, 2133, 2155, 2168

Model

C01; C34; M01; NEA; T35; U35; A62; A82; A94; B82; C42; C92; G42; M82; S92; 081; 087; 131; 137; K37; N31; N81; 11E; 13T; 14C; 16E; 17A; 18A; 18T; 19C; 21C; 23C; 28A; 46M; 51D; D50; G11; G13; G43; G46; G49; G50; G53; M40; M46; P11; P13; P43; P50; P53; R04; R05; R06; R09; R38; R42; R43; R44; R84; R86; R87; RO3; S11; S13; S43; S45; S47; S48; S50; S53; W11; W13; W42; W43; W45; W50; W53; 20E; 22T; 24C; 24M; 28V; 39E; 41T; 43C; 45V; 48E; 50T; 52C; 55V; 72E; 74T; 76C; 78C; 79C; 81A; 82E; 84T; 86C; 87C; CC1; D53; G14; G44; G52; G54; G72; G76; G78; G82; NM1; P14; P44; P57; P71; P74; P76; P78; P84; R14; R15; R16; R17; R18; R51; R52; R57; R58; R62; R63; R67; R71; R89; R93; R96; R97; S14; S44; S54; S70; S75; S76; S78; S80; W14; W44; W48; W54; W67; W76; W77; W78; Z33; 31E; 33T; 37C; 38C; 51E; 54T; 56C; 57C; 88V; BB1; G57; G87; OR1; OR3; OR4; OR5; P89; R28; R29; R31; R74; R78; R82; R98; S55; S85; SR1; US1; W52; W82

TypeModel

2011C01; 2011C34; 2011M01; 2011NEA; 2011T35; 2011U35; 2121A62; 2121A82; 2121A94; 2121B82; 2121C42; 2121C92; 2121G42; 2121M82; 2121S92; 2123081; 2123087; 2123131; 2123137; 2123K37; 2123N31; 2123N81; 213311E; 213313T; 213314C; 213316E; 213317A; 213318A; 213318T; 213319C; 213321C; 213323C; 213328A; 213346M; 213351D; 2133D50; 2133G11; 2133G13; 2133G43; 2133G46; 2133G49; 2133G50; 2133G53; 2133M40; 2133M46; 2133P11; 2133P13; 2133P43; 2133P50; 2133P53; 2133R04; 2133R05; 2133R06; 2133R09; 2133R38; 2133R42; 2133R43; 2133R44; 2133R84; 2133R86; 2133R87; 2133RO3; 2133S11; 2133S13; 2133S43; 2133S45; 2133S47; 2133S48; 2133S50; 2133S53; 2133W11; 2133W13; 2133W42; 2133W43; 2133W45; 2133W50; 2133W53; 215520E; 215522T; 215524C; 215524M; 215528V; 215539E; 215541T; 215543C; 215545V; 215548E; 215550T; 215552C; 215555V; 215572E; 215574T; 215576C; 215578C; 215579C; 215581A; 215582E; 215584T; 215586C; 215587C; 2155CC1; 2155D53; 2155G14; 2155G44; 2155G52; 2155G54; 2155G72; 2155G76; 2155G78; 2155G82; 2155NM1; 2155P14; 2155P44; 2155P57; 2155P71; 2155P74; 2155P76; 2155P78; 2155P84; 2155R14; 2155R15; 2155R16; 2155R17; 2155R18; 2155R51; 2155R52; 2155R57; 2155R58; 2155R62; 2155R63; 2155R67; 2155R71; 2155R89; 2155R93; 2155R96; 2155R97; 2155S14; 2155S44; 2155S50; 2155S54; 2155S70; 2155S75; 2155S76; 2155S78; 2155S80; 2155W14; 2155W44; 2155W48; 2155W54; 2155W67; 2155W76; 2155W77; 2155W78; 2155Z33; 216828V; 216831E; 216833T; 216837C; 216838C; 216851E; 216854T; 216856C; 216857C; 216888V; 2168BB1; 2168G57; 2168G87; 2168OR1; 2168OR3; 2168OR4; 2168OR5; 2168P89; 2168R28; 2168R29; 2168R31; 2168R74; 2168R78; 2168R82; 2168R98; 2168S55; 2168S85; 2168SR1; 2168US1; 2168W52; 2168W82

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