Apple memory modules
| Apple memory modules | |
|---|---|
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| Five Apple memory service modules as photographed in Apple's 1994 module identification manual | |
| Manufacturer | Apple Computer |
| Type | RAM, video RAM and cache modules |
| Interface | 30-pin, 64-pin and 72-pin SIMM; 168-pin DIMM; 144-pin SO-DIMM; proprietary cards |
| Compatible | Apple II, Lisa, Macintosh, PowerBook and LaserWriter models (see sections) |
Apple memory modules are the RAM upgrades Apple sold and serviced for its computers: SIMMs, DIMMs and SO-DIMMs in standard sizes, video RAM (VRAM) and cache modules, and memory cards made for one machine family. Apple's service network exchanged them under 661- part numbers listed in its module identification manual,[1] and sold them to customers as memory expansion kits. Which module a machine takes, its speed and the sizes allowed are set out model by model in Apple's Memory Guide.[2] Machine-specific fitting procedures are on the memory upgrade guides listed under Related pages.
Module types
[edit | edit source]| Type | Width | Speeds in Apple's guide | Used in (examples) |
|---|---|---|---|
| 30-pin SIMM | 8 bits (9 with parity) | 150 to 80 ns | Macintosh Plus to Quadra 900, LC, LC II |
| 64-pin SIMM | 32 bits | 80 ns | Macintosh IIfx |
| 72-pin SIMM | 32 bits | 80 to 60 ns | LC III, Quadra/Centris, Performa, first Power Macintosh models |
| VRAM SIMM | 256K or 512K | 100 or 80 ns | LC family, Quadra/Centris, Color Classic, display cards |
| 168-pin DIMM | 64 bits | 70 ns to 100 MHz SDRAM | Power Macintosh 4400 and 7200 onwards, G3, G4, slot-loading iMac |
| 144-pin SO-DIMM | 64 bits | SDRAM | Original iMac, PowerBook G3 (Bronze Keyboard), PowerBook (FireWire), iBook |
| Memory card | varies | 100 to 70 ns | Macintosh Portable, PowerBook 100 to 1400, PowerBook Duo, Macintosh Classic |
The speeds and machines are from Apple's Memory Guide.[2] Apple's specification for its 30-pin SIMMs is a module "organized by 8 bits in a 30 pin Single-in-Line-Package", built from 256K × 1 chips on the 256K SIMM and 1M × 1 chips on the 1 MB SIMM. Pin 18 is unused on the 256K SIMM and carries address line A9 on the 1 MB SIMM.[3] Apple's 72-pin modules carry 32 data bits; parity SIMMs with a ninth bit per byte work, but the extra bit is ignored, and the Macintosh IIfx was the last Macintosh to use parity memory.[4][5] The Apple Network Server 500 and 700 are the exception among later machines: they take 72-bit parity DIMMs.[6]
Rules that apply to all sizes
[edit | edit source]- Within a bank, SIMMs must match in speed; different banks can differ, as long as every SIMM meets the machine's minimum.[7] Faster modules than the machine needs are safe but do not make it faster.[8][6]
- Apple does not support composite modules, which build one bank from lower-density chips plus extra control circuitry. Apple linked them to start-up failures, random crashes and, on the AV Macintosh models, floppy mounting problems. A double-sided SIMM with two proper banks, such as an 8 MB SIMM with two 4 MB banks, is not composite and works in Quadra and Centris models.[9][10]
- SIMMs marked "030 ONLY" have their CAS and RAS timing reversed and work only in 68030 Macintosh models, starting with the IIx.[11]
- Do not fit EDO DIMMs in a Power Macintosh 7200: Apple warns they can damage the logic board and the memory. The 4400 takes 3.3 V EDO DIMMs; the 5500, 6500 and 6400 take 5 V EDO, and the two kinds are not interchangeable.[6]
- In the PowerBook G3 Series (Bronze Keyboard) and PowerBook (FireWire), EDO SO-DIMMs fit but cause the death chimes at start-up; in the iBook, EDO or SGRAM modules fit but cause several beeps.[2]
256K modules
[edit | edit source]Apple's 256K 30-pin SIMM came as service part 661-0402 (120 ns), 661-0494 (DIP chips, 120 ns) and 661-0519 (SOJ chips, 80 ns). The DIP version is for the Macintosh Plus and SE only, and is marked on the back "For use only in Mac Plus SIMM positions (1,2,3,4) and Mac SE SIMM positions (3, 4)". Apple accepted 150 ns 256K SIMMs for return but shipped 120 ns or faster replacements.[1] Apple's Memory Guide lists 256K SIMMs for the Macintosh Plus, Macintosh SE, Macintosh SE/30, Macintosh Classic, Macintosh II, IIx, IIcx, Macintosh IIci, IIsi, IIvx and IIvi, and the Performa 600. The Plus, SE and Classic need 150 ns or faster, the SE/30 and the II, IIx and IIcx 120 ns, and the IIci and IIvx 80 ns.[2] On the Plus, fitting 1 MB SIMMs means cutting resistors on the logic board; see Macintosh Plus Memory Upgrade Guide.
The 256K VRAM SIMM is a different module: service part 661-0609 (100 ns) when fitted to a Macintosh Display Card 4•8, and 661-0722 (80 ns) on a Quadra or LC-family logic board.[1] Apple sold it as the Macintosh Color Classic 256K VRAM SIMM and the Macintosh LC III 256K VRAM SIMM.[12] A 256K VRAM SIMM carries two 40-pin chips, against four 28-pin chips on the 512K version.[13]
Two cache modules were 256K as well: the Power Macintosh 256K cache SIMM, 661-1024, with five chips of about the same size on each side, and the 256K SRAM SIMM, 661-0792 (17 ns), labelled "256KB Upgrade".[1] In 1997 Apple told a Power Macintosh 7300 owner that it did not sell or support a level 2 cache module larger than 256K.[14]
For the Apple II, the Apple 256K Memory Expansion Kit (A2M2058) held eight chips for the Apple IIGS, IIc and Apple II memory cards; see Memory Expansion Kits.[15]
512K modules
[edit | edit source]Apple's 512K 30-pin SIMM, service part 661-0646 (SOJ, 80 ns),[1] works only in the Macintosh IIci and IIsi; Apple supplied it in the 3 MB IIsi.[16][2]
The 512K VRAM SIMM is 661-0649.[1] Apple sold it as the Macintosh LC II 512K VRAM SIMM, as the 512K VRAM SIMM for the Centris 610, Centris 650 and Quadra 800, and as the Macintosh VRAM Expansion Kit (one 512K SIMM) for the Duo Dock.[12] The Quadra 900 and 950 use only 256K of each 512K VRAM SIMM.[2] The Power Macintosh 512K cache SIMM, 661-0131, has four main chips on each side, against five on the 256K version.[1]
The Lisa's memory boards were 512K each. Apple's Lisa service manual lists the "Lisa/Macintosh XL Memory Board" as 661-93105, a single board goes in the slot marked MEM 1, and Apple's dealer instructions sold a spare half-megabyte board as part A680204.[17] Apple's Tech Info Library confirms that the Macintosh XL used Apple's 512K memory boards, two at most; AST made 1 MB boards.[18] See Apple Lisa 2/10 and Apple Lisa.
1 MB modules
[edit | edit source]Apple's 1 MB 30-pin SIMMs were service parts 661-0403 (120 ns, marked "030 only"), 661-0410 (DIP chips, 120 ns), 661-0520 and 661-0719 (SOJ, 80 ns), and 661-0546 (SOJ, 80 ns, parity).[1] They fit the Macintosh Plus, SE, SE/30 and Classic, the Classic II and Color Classic, the II family (II, IIx, IIcx, IIci, IIsi, IIvx, IIvi), the LC and LC II, Performa 200, 400-430 and 600, and the Quadra 700, 900 and 950.[2] Later 1 MB SIMMs built from two 4-megabit chips work in the Classic II, SE/30, LC and LC II, IIsi, IIcx, IIci, IIvx and IIvi, and Quadra 700, 900 and 950, but fail the memory test in the Macintosh Plus and a revision A Macintosh II.[19] The Macintosh IIfx takes 1 MB modules in its own 64-pin SIMM format.[2]
The 72-pin 1 MB SIMM is listed for machines including the Macintosh TV, the Quadra 605, 630 and 800, the LC III, LC 475, 520, 550/575 and 630, most 72-pin Performa models and the Workgroup Server 80.[2] Apple did not test 1 MB or 2 MB SIMMs in the Power Macintosh and would not support them there.[20]
Two 1 MB cards were made for single machines. The Macintosh Classic 1MB Memory Expansion Card has 1 MB soldered on and two SIMM sockets for 150 ns 256K or 1 MB SIMMs, used in pairs with a jumper change; the Classic cannot go past 4 MB and cannot use 4 MB SIMMs.[21] Apple's service part for the board is 661-0598, returned without its SIMMs.[1] See Macintosh Classic Memory Upgrade Guide. The Macintosh Portable had a 1 MB RAM expansion card (661-0480) and a 1 MB pseudostatic RAM card (661-1614).[1] Apple's guide gives static RAM cards for the original Portable and pseudostatic RAM cards for the backlit model.[2] The Apple IIGS and Apple II memory cards reach 1 MB when full; see Apple IIGS Memory Expansion Card and Apple II Memory Expansion Card.
2 MB modules
[edit | edit source]The 2 MB 30-pin SIMM, service part 661-0643 (SOJ, 80 ns),[1] is listed for the Classic II and Color Classic, the IIci, IIsi, IIvx and IIvi, the LC and LC II, and Performa 200, 400-430 and 600. The 72-pin 2 MB SIMM is listed for the Quadra 605 and 630, LC III, LC 475, LC 520, LC 550/575 and the Performa 450-560 and 630 ranges.[2] Apple did not support 2 MB SIMMs in the Power Macintosh.[20]
The 2 MB PowerBook pseudostatic RAM card, 661-0715, fits the PowerBook 100, 140, 145, 145B, 160 and 170.[1]
4 MB modules
[edit | edit source]Apple's 72-pin 4 MB SIMM is 661-1701 (60 ns, chips on one side), and its 4 MB × 9 parity SIMM is 661-0811 (80 ns, nine chips).[1] In 1995 Apple's retail 72-pin kit was the Macintosh 4MB Memory Expansion Kit, M3651LL/A, one 70 ns SIMM; see Memory Expansion Kits.[22]
4 MB 30-pin SIMMs fit the SE/30, Classic II, Color Classic, II, IIx, IIcx, IIci, IIsi, IIvx, LC, LC II, Performa 200, 400-430 and 600, and the Quadra 700, 900 and 950; the IIfx takes 4 MB 64-pin SIMMs.[2] In an unmodified Macintosh II, 4 MB SIMMs go only in bank B; the machine plays the error chimes if they are put in bank A, and Apple's FDHD upgrade was needed before it could use them at all.[23] 72-pin 4 MB SIMMs are listed for the 72-pin Macintosh models from the Macintosh TV and LC III to the Power Macintosh 8100. 4 MB DIMMs are listed for the DIMM-based models from the Power Macintosh 4400 and 7200 to the G3 minitower and All-In-One; the Blue and White G3 and the G4 start at 32 MB.[2]
The PowerBook 4 MB pseudostatic RAM cards were 661-0714 and 661-1103 (PowerBook 100, 100 ns) and 661-0790 (PowerBook 140 to 180c, 85 ns, coded HB656132AP-85). The PowerBook Duo 210/230 4 MB DRAM card was 661-1659.[1] Apple's 1993 accessory lists include the Macintosh PowerBook 4MB Memory Expansion Kit and the Macintosh PowerBook Duo Memory Expansion Kit.[12]
8 MB modules
[edit | edit source]The 72-pin 8 MB SIMM is 661-1702 (60 ns, chips on both sides).[1] Apple's retail version in 1995 was the Macintosh 8MB Memory Expansion Kit, M3652LL/A.[22] The PowerBook Duo 210/230 8 MB DRAM card was 661-1658, and the PowerBook 520/540 Series RAM Expansion, 8 MB, was 661-0058.[1] Apple's guide lists 8 MB 72-pin SIMMs for the Quadra and Centris models from the 605 to the 840AV, the LC III and later LC models, most 72-pin Performa models and the early Power Macintosh 72-pin models, and 8 MB DIMMs for the DIMM-based models up to the G3 minitower and All-In-One. For the Quadra 900 and 950 it notes that 8 MB and 16 MB 30-pin SIMMs were not tested and not officially supported.[2] Apple's Network Server 16MB Parity Memory Upgrade Kit, M4017Z/A, was two 8 MB 60 ns parity DIMMs.[24]
16 MB modules
[edit | edit source]Apple's 1995 Macintosh 16MB Memory Expansion Kit was M3372LL/A, one 72-pin SIMM.[22] 16 MB 30-pin SIMMs are listed for the II, IIx, IIcx, IIci, IIvx and IIvi and the Performa 600, and the IIfx takes 16 MB 64-pin SIMMs.[2] A Macintosh II needs IIx ROMs (from the FDHD upgrade), a PMMU and MODE32 to use 16 MB SIMMs, and even then only in bank B.[23] For the SE/30's 8 MB addressing limit see Macintosh SE/30 Memory Upgrade Guide.
A 16 MB module made from 4-megabit chips is composite, and Apple does not support it; a proper 16 MB SIMM uses eight 16-megabit chips.[9] 16 MB DIMMs are listed for the DIMM-based models up to the G3 minitower and All-In-One, and Apple's Network Server 32MB Parity Memory Upgrade Kit, M4018Z/A, was two 16 MB DIMMs.[2][24]
32 MB modules
[edit | edit source]32 MB 72-pin SIMMs are listed for the Quadra 605, 630, 800, 840AV, 610, 650 and 660AV, the LC III, LC 475, LC 520 and LC 550/575, most 72-pin Performa models, the Power Macintosh 5200, 6100, 7100 and 8100, and the Workgroup Servers 60, 80, 6150, 8150 and 9150.[2] In the first Power Macintosh models 72-pin SIMMs go in matched pairs to span the 64-bit bus.[6]
32 MB DIMMs are listed for every DIMM-based desktop model in Apple's guide except the slot-loading iMac, which starts at 64 MB; on the Power Macintosh G3 (Blue and White) and the Power Mac G4 the 32 MB DIMM is a 64-megabit part. The original iMac takes 32 MB and 64 MB 144-pin SO-DIMMs in two slots on its processor board.[2] Apple's Network Server 64MB Parity Memory Upgrade Kit, M4019Z/A, was two 32 MB DIMMs.[24]
64 MB modules
[edit | edit source]64 MB modules are 168-pin DIMMs and 144-pin SO-DIMMs. Apple's guide lists 64 MB DIMMs for the Performa 5400, 6360 and 6400, the Power Macintosh 4400/200, 5400, 5500, 6400, 6500, 7300, 7500, 7600, 8500, 8600, 9500 and 9600, the Twentieth Anniversary Macintosh, the Power Macintosh G3 desktop, minitower and All-In-One, the Blue and White G3, the Power Mac G4, the slot-loading iMac, the Network Server 500 and 700, the Macintosh Server G3 and the Workgroup Servers 7350, 8550 and 9650. The Power Macintosh 4400/160 and 7200 stop at 32 MB DIMMs.[2] The original iMac takes 64 MB SO-DIMMs,[2] and the PowerBook (FireWire) shipped with 64 MB or 128 MB of PC100 SDRAM on 144-pin SO-DIMMs.[25]
128 MB modules
[edit | edit source]Among the Power Macintosh models before the G3, only the 9500 lists 128 MB DIMMs. The Power Macintosh G3 minitower and All-In-One and the Macintosh Server G3 take them, as do the Blue and White G3, the Power Mac G4 and the slot-loading iMac. On the last three Apple distinguishes 128 MB DIMMs built from 64-megabit chips from those built from 128-megabit chips, and for the Blue and White G3 and the G4 (AGP Graphics) it allows at most 16 memory devices per DIMM.[2] The 2001 Macintosh Server G4 accepts 128 MB DIMMs of either technology in its PC133 slots.[26] The PowerBook (FireWire) shipped with up to 128 MB.[25]
256 MB modules
[edit | edit source]256 MB DIMMs, built from 128-megabit chips, are listed for the Power Macintosh G3 (Blue and White), the Power Mac G4 and the slot-loading iMac, iMac DV and iMac DV Special Edition, which take 256 MB in each of two slots for 512 MB.[2] The 2001 Macintosh Server G4 takes 256 MB DIMMs of 128-megabit technology.[26] The PowerBook (FireWire) reaches its 512 MB maximum with two SO-DIMMs.[25]
Memory Expansion Kits
[edit | edit source]"Memory Expansion Kit" was Apple's retail name for memory upgrades across its product lines:
| Kit | Order number | Contents | For | Source |
|---|---|---|---|---|
| Apple 256K Memory Expansion Kit | A2M2058 | Eight 256K × 1 RAM chips | Apple IIGS, IIc and Apple II memory cards; one kit for 512K, three for 1 MB | Apple data sheet, 1987[15] |
| Apple IIc Memory Expansion Kit | A2P4130 | Memory card and logic board upgrade | Apple IIc model A2S4000, dealer-installed | Apple data sheet, 1987[15] |
| Macintosh 4MB Memory Expansion Kit; Macintosh PowerBook 4MB Memory Expansion Kit; Macintosh PowerBook Duo Memory Expansion Kit | Listed as accessories for Macintosh and PowerBook models | Apple Facts, February 1993[12] | ||
| Macintosh 4MB, 8MB and 16MB Memory Expansion Kits | M3651LL/A, M3652LL/A, M3372LL/A | One 72-pin SIMM, 70 ns | LC III, 475, 520, 550, 575; Performa 450, 460, 466, 467, 475, 476, 550; Macintosh TV; Centris 610, 650, 660AV; Quadra 605, 610, 630 family, 650, 660AV; Power Macintosh 6100, 7100, 8100; Workgroup Server 60 | Apple TIL 17026, 1995[22] |
| Network Server 16MB, 32MB and 64MB Parity Memory Upgrade Kits | M4017Z/A, M4018Z/A, M4019Z/A | Two 60 ns parity DIMMs of 8, 16 or 32 MB | Apple Network Server 500 and 700 | Apple data sheet[24] |
In 1995 Apple's kits were all 70 ns, so they were not sold for the Quadra 800, Quadra 840AV and Workgroup Server 80, which need 60 ns SIMMs from third parties.[22] The Apple IIGS and Apple II cards are covered on Apple IIGS Memory Expansion Card and Apple II Memory Expansion Card.
Related pages
[edit | edit source]- Apple Memory Guide
- Apple Module Identification Manual (1994)
- Macintosh Plus Memory Upgrade Guide, Macintosh SE Memory Upgrade Guide, Macintosh SE/30 Memory Upgrade Guide
- Macintosh Classic Memory Upgrade Guide, Macintosh Classic II Memory Upgrade Guide
- Macintosh Color Classic Memory Upgrade Guide, Macintosh Color Classic II Memory Upgrade Guide
- Apple Macintosh IIci Cache Card
- Apple IIGS Memory Expansion Card, Apple II Memory Expansion Card
References
[edit | edit source]- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 Apple Computer, Module Identification, PN 072-8124, June 1994, "CPU PCBs" section: 1.3.1-1.3.22, memory SIMMs (PDF pp. 45-66); 1.5.4, Macintosh Classic Memory Expansion Board, 661-0598 (PDF p. 78); 1.12.2-1.12.5, Macintosh Portable memory cards (PDF pp. 120-123); 1.14.1-1.14.3 and 1.16.7, PowerBook PSRAM expansion cards (PDF pp. 131-133, 143); 1.17.12, PowerBook 520/540 Series RAM Expansion, 8 MB, 661-0058 (PDF p. 158); 1.19.4-1.19.5, Power Macintosh cache SIMMs (PDF pp. 168-169); 4.4.1-4.4.2, PowerBook Duo 210/230 DRAM cards (PDF pp. 261-262). Each page gives the module's photograph, Apple part number and return notes. Hosted as File:Apple Module Identification (PN 072-8124, June 1994).pdf (see Apple Module Identification Manual (1994)).
- ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 2.12 2.13 2.14 2.15 2.16 2.17 2.18 2.19 2.20 2.21 Apple Computer, Apple Memory Guide, May 2000, 165 pages. One page per model giving module type, speed, slots, supported sizes and maximum. PDF pages used here: Macintosh Plus 4, SE 5-6, SE/30 7, Classic 8, Classic II 9, Color Classic 10, Macintosh TV 12, II 13, IIx 14, IIfx 15, IIcx 16, IIci 17, IIsi 18, IIvx/IIvi 19; Quadra 605 21, 630 22, 700 23, 800 24, 840AV 25, 900/950 26, Quadra/Centris 610 27, 650 28, 660AV 29; LC 31, LC II 32, LC III 33, LC 475 34, LC 520 36, LC 550/575 37; Performa 200 41, 400-430 43, 450-467 44, 600 50, 5200-5300 55, 6100 59, 6400 63; Power Macintosh 4400 65-66, 5200 67, 5400 70-71, 5500 72, 6100 73, 6400 74, 6500 75, 7100 76, 7200 77, 7300-7600 78-80, 8100 81, 8500 82, 8600 83, 9500 84, 9600 86, Twentieth Anniversary Macintosh 88, G3 desktop, minitower and All-In-One 89-91, iMac 92, G3 (Blue and White) 93, G4 94-95, slot-loading iMac 96; Macintosh Portable 98, backlit Portable 99, PowerBook 100 100, 140/145 101, 160/165/180 105, PowerBook G3 Series (Bronze Keyboard) 120, PowerBook (FireWire) 121, iBook 122; Workgroup Servers 124-136. Hosted as File:Apple Memory Guide (May 2000).pdf (see Apple Memory Guide).
- ↑ Apple Computer, Tech Info Library article 3160, Apple 256K, 1 MB SIMMs: Specifications, created 3 August 1988, absurdengineering.org library. The 30-pin pinout; the module dimensions; timing tables for 256K × 8 at 150 and 120 ns and 1M × 8 at 120 ns.
- ↑ Apple Computer, Tech Info Library article 18497, RAM: Difference between 2x32 and 2x36 SIMMs (8/95), absurdengineering.org library.
- ↑ Apple Computer, Tech Info Library article 13086, 72-Pin SIMMs: Which Macs Support Industry Standard (3/94), absurdengineering.org library. Desktop Macintosh models introduced since February 1993 use 72-pin SIMMs; the parity bit is ignored; buy 72-pin fast-page-mode SIMMs of 60 ns or faster, 80 ns for the LC III; Apple does not support composite 72-pin SIMMs.
- ↑ 6.0 6.1 6.2 6.3 Apple Computer, Tech Info Library article 20575, Power Macintosh: Memory FAQ (2/97), absurdengineering.org library. SIMMs in pairs and DIMMs singly on the 64-bit bus; interleaving on the 7300-9600; refresh counts; composite modules not supported; EDO support by model, 3.3 V EDO for the 4400 and 5 V for the 5500, 6500 and 6400; no EDO in the 7200; parity only on the Network Server 500 and 700; no ECC.
- ↑ Apple Computer, Tech Info Library article 8196, Macintosh: SIMM Speed Configurations, 14 May 1991, absurdengineering.org library.
- ↑ Apple Computer, Tech Info Library article 7345, Macintosh: OK to Use SIMMs that Are Faster than Required, 15 April 1991, absurdengineering.org library. Faster SIMMs are fine provided they are of good quality and the proper resistors have been clipped.
- ↑ 9.0 9.1 Apple Computer, Tech Info Library article 13087, Composite SIMMs: How to Identify (2/95), absurdengineering.org library.
- ↑ Apple Computer, Tech Info Library article 13824, SIMMs: Double-Sided vs. Composite (11/93), absurdengineering.org library.
- ↑ Apple Computer, Tech Info Library article 3538, SIMMs: Some Are For 68030-Based Systems Only, 2 March 1989, absurdengineering.org library.
- ↑ 12.0 12.1 12.2 12.3 Apple Computer, Apple Facts, February 1993, model entries for the Color Classic, LC II, LC III, Centris 610 and 650, Quadra 800 and 950, PowerBook models, PowerBook Duo and Duo Dock (accessory lists). archive.org item apple-facts-9302-2.93-february-1993, https://archive.org/details/apple-facts-9302-2.93-february-1993 (retrieved 2026-10-04).
- ↑ Apple Computer, Tech Info Library article 16816, VRAM SIMMs: Differentiating Between 256k and 512k (11/94), absurdengineering.org library. Two 40-pin ICs on the 256K VRAM SIMM, four 28-pin ICs on the 512K; VRAM SIMMs come in 80 ns and 100 ns.
- ↑ Apple Computer, Tech Info Library article 21252, Power Macintosh: Level 2 Cache Modules Supported (5/97), 5 May 1997, absurdengineering.org library.
- ↑ 15.0 15.1 15.2 Apple Computer, Apple II Memory Expansion Cards data sheet, A2F2222, July 1987, p. 54 (the IIc Memory Expansion Kit includes the card and a logic board upgrade for model A2S4000) and p. 56 (ordering information; one 256K kit for 512K, two for 768K, three for 1 MB; dealer installation). Hosted as File:Apple II Memory Expansion Cards data sheet (A2F2222, July 1987).pdf.
- ↑ Apple Computer, Tech Info Library article 8626, 512K SIMMs: Work Only in Macintosh IIci and Macintosh IIsi, 13 August 1991, absurdengineering.org library.
- ↑ Apple Computer, Lisa Level 1 Technical Procedures, #072-0085, March 1985: Lisa Upgrade and Retrofit p. 0.1 (Lisa 2/5 inventory upgrade: remove either half-megabyte memory board and sell it separately as A680204, PDF p. 246); installing a single memory board in MEM 1 (PDF p. 173); illustrated parts lists, 661-93105 Lisa Memory Board. Hosted as File:Apple Lisa Level 1 Technical Procedures Mar85.pdf (see Apple Lisa Level 1 Technical Procedures Mar85).
- ↑ Apple Computer, Tech Info Library article 8760, Macintosh XL: Memory Upgrades, 13 August 1991, absurdengineering.org library.
- ↑ Apple Computer, Tech Info Library article 10751, Macintosh: Which Models Can Use Two Chip 1MB SIMMs (3/94), absurdengineering.org library.
- ↑ 20.0 20.1 Apple Computer, Tech Info Library article 15454, Power Macintosh: 1 MB and 2 MB SIMMs not supported (5/94), 24 May 1994, absurdengineering.org library.
- ↑ Apple Computer, Tech Info Library article 6176, Macintosh Classic: RAM Upgrades and 1MB Memory Expansion Card, 16 October 1990, absurdengineering.org library. Valid configurations: 1, 2, 2.5 and 4 MB.
- ↑ 22.0 22.1 22.2 22.3 22.4 Apple Computer, Tech Info Library article 17026, Quadra 800/840av/Wrkgrp Srvr 80: No Memory from Apple (5/95), 4 May 1995, absurdengineering.org library. All current Apple Macintosh memory upgrades 70 ns; M3651LL/A 4MB, M3652LL/A 8MB and M3372LL/A 16MB 72-pin kits and the machines they fit; the Quadra 800, 840AV and Workgroup Server 80 need 60 ns SIMMs from third parties.
- ↑ 23.0 23.1 Apple Computer, Tech Info Library article 9523, Macintosh II and IIx: 16MB SIMMS, MODE32, and RAM (9/95), absurdengineering.org library. 4 MB SIMMs in a Macintosh II need the FDHD upgrade and go in bank B; chimes with 4 MB SIMMs in bank A; a PMMU and MODE32 for more than 8 MB; 68 MB maximum.
- ↑ 24.0 24.1 24.2 24.3 Apple Computer, Apple Network Server data sheet, L01695C, "Network Server Memory Expansion Kits" (PDF p. 6): 16MB (M4017Z/A, two 8MB DIMMs), 32MB (M4018Z/A, two 16MB DIMMs) and 64MB (M4019Z/A, two 32MB DIMMs) Parity Memory Upgrade Kits, 168-pin JEDEC DIMMs at 60 ns. Hosted as File:Apple Network Server Data Sheet (L01695C).pdf.
- ↑ 25.0 25.1 25.2 Apple Computer, PowerBook (FireWire) data sheet, L05016A, 2000, "Processor and memory": 64MB or 128MB of PC100 SDRAM (3.3-volt, unbuffered, low-power, 64-bit-wide, 144-pin); two SO-DIMM slots support up to 512MB. Hosted as File:PowerBook (FireWire) Data Sheet (L05016A, 2000).pdf.
- ↑ 26.0 26.1 Apple Computer, Macintosh Server G4 with AppleShare IP data sheet, 2001, "Memory": 256MB of PC133 SDRAM; three DIMM slots for up to 1.5GB using 32, 64 or 128MB DIMMs (64-Mbit technology), 128 or 256MB DIMMs (128-Mbit technology) or 512MB DIMMs (256-Mbit technology). Hosted as File:Macintosh Server G4 with AppleShare IP Data Sheet (2001).pdf.