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DEC 54-23170-EA 4MX33 70NS SIMM
- 4 Megabyte (4MB) memory capacity
- SIMM (Single In-line Memory Module) form factor
- 70 nanosecond (70ns) access time
- 4MX33 configuration (4 Million x 33 bits)
- Designed for legacy computer systems
- Provides essential memory for older hardware
- Standard DRAM technology
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Product Overview
The DEC 54-23170-EA is a 4MX33 70NS SIMM module, a type of memory used in older computer systems. It provides 4 Megabytes of memory with a 70 nanosecond access time.
Technical Information
| Capacity | 4MB |
| Memory Type | SIMM (DRAM) |
| Access Time | 70ns |
Additional Specifications
| Configuration | 4MX33 |
| Brand | DEC |
| Model | 54-23170-EA |
Product Description
The DEC 54-23170-EA is a 4 Megabyte (MB) Single In-line Memory Module (SIMM). This type of memory module was commonly used in personal computers and workstations from the late 1980s through the 1990s. The '4MX33' designation indicates that the module contains 4 million bits of memory organized in a 33-bit wide configuration, which typically translates to 32 data bits plus 1 parity bit, common for older systems requiring error checking. With an access time of 70 nanoseconds (70ns), this SIMM provides a specific performance characteristic suitable for the processors and motherboards of its era. Slower access times like 70ns were standard for DRAM modules during that period, and systems were designed to operate within these parameters. This memory module is essential for maintaining or upgrading the functionality of legacy computer hardware that relies on SIMM technology. This particular module is a component for older computing architectures and is not compatible with modern systems that utilize DIMM or SO-DIMM form factors and faster DDR technologies. Its primary use case is for users who need to repair or expand the memory of vintage computers, servers, or specialized industrial equipment that still operates with SIMM slots. The DEC branding suggests it was likely intended for Digital Equipment Corporation systems or systems compatible with DEC memory standards.
