Persistent Memory

Persistent Memory

Persistent memory refers to high bandwidth memory with high endurance and retention, like the 4DS PCMO ReRAM cell, that sits in or near the main memory and CPU cache to provide real time data storage without latency impact. Persistent memory combines the speed of DRAM with the data retention of non-volatile to provide Warm Data support to the main CPU.

The benefits of persistent memory can be many:

  • It can enable faster data access to the CPU
  • It provides extremely fast system reboot in the case of fault
  • It can integrate seamlessly within the memory hierarchy, residing between volatile memory and traditional storage devices
  • It can provide additional memory capacity to DRAM for big data analytics
  • It can be used as ultrafast storage for in-memory databases

In summary, persistent memory combines speed, resiliency, and capacity with non- volatility, making it a great option for applications demanding rapid data access and retention. Past efforts at bringing a persistent memory to market have failed, partly because of the memory overhead from trying to provide persistent memory functionality with a memory technology that was slower than DRAM and had limited endurance. We believe that 4DS can potentially provide that memory solution for Persistent Memory Applications.

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