UltraRAM: The Next‑Generation Non‑Volatile Memory That Could Dwarf SSDs

The storage market may be on the brink of a major shift.

In July, Micron introduced the world’s first PCIe 6.0 SSD, the 9650, delivering sequential read/write speeds of 28 GB/s and 14 GB/s and random performance of 5,500 K IOPS read and 900 K IOPS write, yet many users felt little impact.

Two reasons explain this: NAND’s random read/write latency remains a bottleneck, and mainstream SSDs are already fast enough that typical loading times show little difference.

Enter UltraRAM.

UltraRAM is a "universal non‑volatile storage" technology pioneered by a team at Lancaster University and now commercialized by Quinas Technology. Recent advances in antimony‑gallium and antimony‑aluminum epitaxy processes enable its mass production.

It offers memory‑class speed latency, a lifespan up to 4,000 times that of NAND, and data retention exceeding 1,000 years.

The core innovation is the Triple‑Barrier Resonant Tunnelling (TBRT) structure, built from GaSb/AlSb/InAs quantum wells. This multi‑layer barrier enables electrons to tunnel reversibly at very low voltages.

Compared with NAND’s typical 10‑20 V erase voltage, UltraRAM operates below 2 V and achieves switching times around 100 ns, approaching DRAM performance.

In durability, NAND flash typically endures 3,000–100,000 write cycles (up to 1 M for enterprise SLC), whereas UltraRAM has demonstrated over 10 million cycles in tests, with accelerated aging suggesting data integrity for more than a millennium.

Performance tests show random read/write speeds roughly 100 × faster than current SSDs, enabling near‑instant boot, game launch, productivity tool loading, and AI model initialization, all while retaining data after power loss.

However, the technology’s cost remains high due to the complex III‑V semiconductor materials, echoing the fate of Intel’s Optane, which was discontinued because of price constraints.

If UltraRAM reaches the market, early adopters will likely be high‑performance computing, data center, and AI workloads that can afford the premium, while consumer adoption may lag several SSD generations.