[ MEMORY // IDENTIFIED VINTAGE MODULE ]
Samsung KMM5321200C2W
Samsung’s documented 1M × 32 FPM module; the 72-pin contacts and 5 V signaling distinguish it from later DIMMs. This is a model-specific record, not a generic SIMM-family listing.
Exact module specifications
| Manufacturer / exact part number | Samsung KMM5321200C2W |
|---|---|
| Capacity | 4 MB (1M × 32 bits) |
| Generation / contact count | 72-pin SIMM, 72-pin single-inline-contact vintage generation |
| Memory mode and parity | Fast Page Mode (FPM) DRAM; 32-bit non-parity data path; no ECC/parity bit lane |
| Speed / access time | 60 ns row-access (tRAC) timing variant documented for this module family; confirm the label revision against the matching datasheet timing table |
| Operating voltage | 5 V nominal (module-family datasheet specifies a single +5 V supply; ±10% where stated). |
| Chip organization | Two 1M × 16 DRAM devices on the Samsung 1M × 32 module PCB |
Host compatibility & handling
For 486 and compatible early Pentium-class 72-pin hosts with 5 V SIMM signaling, a 4 MB module capacity accepted by the chipset/BIOS, and 32-bit SIMM banks. It is not a 30-pin module and does not supply parity.
- 72-pin SIMMs have 32-bit data or 36-bit data-plus-parity organization; 30-pin SIMMs expose 8 or 9 bits. 30-pin and 72-pin modules are not interchangeable.
- Confirm the system’s documented voltage, supported memory density, parity policy, bank-width/population order, and access timing before installation; matching notches do not guarantee support.
- Handle by board edges, protect from ESD, and document the complete module/chip markings and the host used for testing.
Model-specific identification notes
Samsung’s documented 1M × 32 FPM module; the 72-pin contacts and 5 V signaling distinguish it from later DIMMs. The module organization and exact SKU should be checked against the cited data-sheet/archive records and the physical label; speed suffixes are not interchangeable.
Sources & further reading
- Samsung KMM5321200C2W/C2WG DRAM module datasheet (archived transcription)Primary model-specific source for the stated part family and organization; use the matching speed-grade datasheet/label for final identification.
- Internet Archive — Transcend 8 MB FPM 72-pin SIMM manual (form factor and legacy installation reference)Independent HTTPS archival source for vintage module generation and context. Compatibility is host-specific and must be checked in the machine's service manual.
Archive references establish the vintage form-factor context; the module data sheet and host service manual govern electrical/timing compatibility.