Apple II Saturn 128K Memory Expansion Card
Apple II Saturn 128K Memory Expansion Card
What Is It?
The Apple II Saturn 128K Memory Expansion Card is a Saturn-compatible memory upgrade designed specifically for Apple II series computers. Featuring genuine SEC KOREA KM681000CLP-7 static RAM chips, it delivers 128KB of reliable, low-power memory expansion — giving your vintage machine the headroom it needs to run ProDOS and memory-intensive software.
While many Apple II programs only require 16K, this card offers flexible configurations from 16K all the way up to 128K, letting you start simple and scale up as your needs grow.
Technical Specifications
- Chip: SEC KOREA KM681000CLP-7 Static RAM
- Capacity: 128KB (configurable: 16K / 64K / 128K)
- Access Time: 70ns
- Power Consumption: 60mA typical — low-power CMOS design
- Package: DIP-32, fully compatible with Apple II expansion slots
- Compatibility: Saturn memory card standard
Why We Built It
Vintage Apple II memory expansion cards are becoming increasingly rare and expensive, with many relying on aging DRAM technology that degrades over time. We created this card to give enthusiasts an authentic Saturn-compatible solution that preserves the vintage computing experience while delivering modern-grade reliability.
The SEC KM681000CLP-7 chips represent the pinnacle of 1990s SRAM engineering — offering low-power operation, proven longevity, and the exact timing characteristics that classic Apple II software expects.
What Makes It Special
- ✅ Genuine Samsung CMOS SRAM technology — far more reliable than vintage DRAM alternatives
- ✅ Precise timing and electrical characteristics matched to Apple II software requirements
- ✅ Every chip individually tested and verified before shipping
- ✅ Start with 16K expansion, unlock full 64K+ capability for ProDOS and advanced applications
- ✅ Minimal heat generation — safe for long-term continuous operation
Who Is It For?
Whether you're an Apple II collector, a retro gaming enthusiast, or a user who wants to run ProDOS and memory-intensive programs, this card is the ideal upgrade. Start with basic 16K expansion for everyday software, then unlock the full 128K potential whenever you're ready for advanced applications and games.
Each card ships with a full test report, ensuring your vintage investment is protected by authentic, high-quality components built to last for decades.