Rohan Paul (@rohanpaul_ai) · 10/20/2026, 14:55:35
Marvell Demonstrates Photonic Memory Module for 50m GPU Link
Marvell has demonstrated a photonic memory module that extends the distance between HBM/DDR and GPUs to 50 meters, breaking the traditional 1.5mm limit. With latency maintained in the hundreds of nanoseconds, this technology decouples compute from memory, allowing AI clusters to scale capacity independently without being constrained by accelerator packaging.
SOURCE COVERAGEFull Original Report
Rohan Paul (@rohanpaul_ai) · 2026-10-20 06
Marvell’s Dave Lazovsky is holding a tiny module that uses photonics to move high-bandwidth memory (HBM + DDR) as far as 50 meters away from the GPU.
this can sit up to 50 meters from a GPU instead of the usual 1.5 mm.
For the first time, memory no longer has to live right next to compute, letting AI clusters share massive capacity without being locked to the accelerator package.
Latency stays in the hundreds of nanoseconds, close enough for practical memory use. Basically, Memory and compute now scale on separate axes instead of being locked together.
