Overview
The Crucial CT8M64S4D8E.8T100 is a 64MB synchronous DRAM (SDRAM) module designed for legacy personal computers and workstations of the late 1990s. Operating at 100MHz with a CAS latency of 2, this non-ECC memory module meets the PC100 standard (PC100-222-620) and delivers stable performance for systems requiring this generation of RAM. Manufactured by Micron Technology under the Crucial brand, this module provides a cost-effective upgrade path for older hardware.
Key Features
- 64MB capacity on a single 168-pin DIMM module
- 100MHz synchronous operation with CAS2 latency for reliable timing
- Non-ECC design suitable for consumer-grade desktop and workstation platforms
- PC100 standard compliance (PC100-222-620 designation)
- Single-rank configuration for broad compatibility
- Industry-standard 168-pin DIMM form factor
Technical Specifications
The specifications table below defines the electrical and physical characteristics of the Crucial CT8M64S4D8E.8T100:
Typical Applications
- Desktop PC memory upgrades for Pentium II, Pentium III, and early Pentium 4 systems
- Legacy workstation RAM expansion (Compaq, Dell, Gateway, HP, IBM era machines)
- Replacement memory for systems originally equipped with PC100 SDRAM
- Retro computing projects and system restoration requiring period-correct components
- Educational and embedded systems using legacy memory architectures
Compatibility & Replacements
Compatible With
- Pentium II, Pentium III, and early Pentium 4 motherboards
- PC100-compliant systems (1997–2002 era desktops and workstations)
- Gateway, Compaq, Dell, HP, and IBM legacy platforms
- Any system with a 168-pin DIMM socket accepting 100MHz non-ECC SDRAM
Replaces / Drop-In Replacement For
- Other Crucial/Micron PC100 64MB modules (MT8LSDT864AG series)
- Generic OEM 64MB 100MHz CAS2 SDRAM modules
- Verify exact motherboard compatibility with your system documentation before installation
Works With
- Legacy BIOS-based motherboards (no UEFI required for this generation)
- Standard memory detection tools for Pentium-era processors
- Award, AMI, and Phoenix BIOS firmware versions supporting PC100 memory





