Tag: fpm dram

2 matching upgrades

Showing 2 products.

StatusProductWhat it doesCompatibilityLinks
Sold outChecked Jul 24, 2026Artmix 16 MB 30-pin FPM SIMMby Unbranded
30 pin simmfpm dram16mb60ns

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

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
  • Macintosh 30-pin FPM RAM SIMMs Bus/interface
  • Macintosh SE/30 Exact model
  • Macintosh IIci Exact model
  • Macintosh IIsi Exact model
Check Artmix 16 MB SIMM availability
Build itChecked Jul 24, 2026GW419X 30-pin RAM SIMM Familyby Garrett's Workshop
30 pin simmfpm dram4mb16mb70ns80nsopen hardwarediy

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

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
  • Macintosh 30-pin FPM RAM SIMMs Bus/interface
  • Macintosh IIx Exact model
GW4192A 64 MB kit pageGW4194A Macintosh II and IIx kit pageOpen GW419X designsGW419X selection guide