Description
Genuine Samsung KM4164A 4164 Upper RAM – New Old Stock (NOS)
Body: A common failure point in 1980s hardware is the Dynamic RAM (DRAM). If your Sinclair or Amstrad is suffering from a “frozen” border, attribute corruption, or failing memory tests, it’s likely time for a replacement. These Samsung KM4164A chips are New Old Stock, meaning they are original period components that have never been used.
Unlike modern “pulled” chips found on some marketplaces, these NOS units have clean pins and haven’t been subjected to decades of heat cycles.
Compatibility:
- Sinclair ZX Spectrum: Direct replacement for the “Upper RAM” (the 32K bank) in 16K and 48K models (Issue 2 through Issue 6).
- Amstrad CPC: Compatible with the CPC 464, 664, and 6128 memory banks.
- Commodore 64: Can be used in various C64 motherboard revisions that require 4164 DRAM.
- BBC Micro: Suitable for Model B memory expansions and repairs.
Technical Specifications:
- Part Number: KM4164A-15 (or equivalent 4164 series)
- Package: 16-pin DIP
- Type: 64K x 1 bit Dynamic RAM
Condition: New Old Stock (Unused & TESTED)
