Macintosh 30-pin FPM RAM SIMMs

Memory modules for Macintosh systems using 30-pin fast-page-mode DRAM SIMMs. Capacity, refresh protocol, parity, bank population, ROM addressing, and physical clearance still vary by model.

Also called: 30-pin Macintosh RAM, 30-pin FPM SIMM, Macintosh 30-pin SIMM

At a glance

Products listed: 2

Exact-target evidence: 0

Family/interface evidence: 2

Product types: 1

Vintage searches: 0

Directory: 30-pin FPM RAM

Browse everything below, or filter by product type, availability, and compatibility basis. Notes explain whether evidence names an exact target, a broader family, or only the relevant bus or interface for this platform.

Showing 2 products.

Status Product What it does Links

Status	Product	What it does	Links
Sold outChecked Jul 24, 2026	Artmix 16 MB 30-pin FPM SIMMby Unbranded 30 pin simm fpm dram 16mb 60ns	Single 16 MB, 60 ns, non-parity fast-page-mode SIMM for specifically listed 30-pin Macintosh systems. For this platform (bus/interface): This is a 16 MB, 60 ns, non-parity FPM module. The seller requires four modules in the listed Macintosh systems. Connector shape alone does not establish capacity, refresh, ROM addressing, bank-population, or physical-clearance compatibility. The Artmix product page reported out of stock on 2026-07-24. Check the direct page for a restock and confirm the exact computer's ROM, addressing, bank-population, and clearance requirements. Sources Artmix 16 MB 30-pin SIMM product page	Check Artmix 16 MB SIMM availability
Build itChecked Jul 24, 2026	GW419X 30-pin RAM SIMM Familyby Garrett's Workshop 30 pin simm fpm dram 4mb 16mb 70ns 80ns open hardware diy	Open four-layer 30-pin FPM memory family with 4 MB, parity, 16 MB, and early-Macintosh PAL SIMM variants. For this platform (bus/interface): Choose the exact GW419X variant required by the computer. GW4192A is a 16 MB non-parity 4K-refresh module; GW4194A is the special 4 MB PAL SIMM for systems that lack the 4M CBR refresh protocol. Connector shape alone does not establish compatibility. The assembled GW4192A kit was out of stock on 2026-07-24 and had been sold out since October 26, 2022. GW4194A had been sold out since January 19, 2023. Open schematics and layouts remain available. These modules support FPM, not EDO, even when an EDO chip is wired to operate in FPM mode. Check refresh type, parity, capacity, bank population, and physical clearance against the exact computer before building or installing a variant. Sources GW4192A product page GW4194A product page GW419X selection guide RAMSIMM-30 project repository	GW4192A 64 MB kit page GW4194A Macintosh II and IIx kit page Open GW419X designs GW419X selection guide

Sold outChecked Jul 24, 2026

Artmix 16 MB 30-pin FPM SIMMby Unbranded

Single 16 MB, 60 ns, non-parity fast-page-mode SIMM for specifically listed 30-pin Macintosh systems.

For this platform (bus/interface): This is a 16 MB, 60 ns, non-parity FPM module. The seller requires four modules in the listed Macintosh systems. Connector shape alone does not establish capacity, refresh, ROM addressing, bank-population, or physical-clearance compatibility.

The Artmix product page reported out of stock on 2026-07-24. Check the direct page for a restock and confirm the exact computer's ROM, addressing, bank-population, and clearance requirements.

Sources

Artmix 16 MB 30-pin SIMM product page

Check Artmix 16 MB SIMM availability

Build itChecked Jul 24, 2026

GW419X 30-pin RAM SIMM Familyby Garrett's Workshop

Open four-layer 30-pin FPM memory family with 4 MB, parity, 16 MB, and early-Macintosh PAL SIMM variants.

For this platform (bus/interface): Choose the exact GW419X variant required by the computer. GW4192A is a 16 MB non-parity 4K-refresh module; GW4194A is the special 4 MB PAL SIMM for systems that lack the 4M CBR refresh protocol. Connector shape alone does not establish compatibility.

The assembled GW4192A kit was out of stock on 2026-07-24 and had been sold out since October 26, 2022. GW4194A had been sold out since January 19, 2023. Open schematics and layouts remain available. These modules support FPM, not EDO, even when an EDO chip is wired to operate in FPM mode. Check refresh type, parity, capacity, bank population, and physical clearance against the exact computer before building or installing a variant.

Sources

GW4192A 64 MB kit page GW4194A Macintosh II and IIx kit page Open GW419X designs GW419X selection guide