PoX is a new class of ultra‑fast, ultra‑green memories that meet the swelling appetite of large‑language‑model accelerators.
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The original was posted on /r/singularity by /u/Different-Froyo9497 on 2025-04-19 16:16:19+00:00.

A research team at Fudan University has built the fastest semiconductor storage device ever reported, a non‑volatile flash memory dubbed “PoX” that programs a single bit in 400 picoseconds (0.0000000004 s) — roughly 25 billion operations per second. The result, published today in Nature, pushes non‑volatile memory to a speed domain previously reserved for the quickest volatile memories and sets a benchmark for data‑hungry AI hardware.