WPQ-DIMM-4 Reference (4-disc stack)
A reference WPQ-DIMM in the 4-disc stacked form factor. Approximately 160 quantum tiles per DIMM. Same physical envelope and CXL 3.0 interface as WPQ-DIMM-1; four discs coupled into the bridge PCB via a shared V-groove fibre array with wavelength-di.
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Extended catalog & full narrative — WPQ-DIMM-4 Reference (4-disc stack)
The extended dossier appended from the 2026-08-05 catalog snapshot. Prices in the body copy have been stripped; the live-store price on this page is the authoritative figure. Images have been omitted.
WPQ-DIMM-4 — Reference (4-disc stack)
(USD). A reference WPQ-DIMM in the 4-disc stacked form factor. Approximately 160 quantum tiles per DIMM. Same physical envelope and CXL 3.0 interface as WPQ-DIMM-1; four discs coupled into the bridge PCB via a shared V-groove fibre array with wavelength-division multiplexing.
Physical envelope
- JEDEC DDR5 UDIMM, 288-pin edge, tall-DIMM 34.0 mm height.
- CXL 3.0 memory-semantic (Type-2). Same host compatibility as WPQ-DIMM-1.
- Weight ≤ 75 g. Power ≤ 15 W. Passive cooling.
What is different from WPQ-DIMM-1
- Four Q-Blanks stacked horizontally on the mounting frame instead of one.
- Enlarged V-groove fibre array to couple all four disc edges.
- Photonic transceiver operates in wavelength-division multiplexed mode across the four discs.
- Tile count: approximately 160 tiles per DIMM (4× WPQ-DIMM-1).
- Ships pre-written with a 4-disc-parallel reference design that demonstrates cross-disc tile scheduling.
Who buys DIMM-4
Buyers whose workloads need per-DIMM tile density beyond what the 1-disc variant provides. AI-inference platforms doing multi-head attention across large embedding dimensions. Defense signal-processing programs running wide FFTs or long-time-window correlations. Research groups characterizing scale-up behavior before deploying WPQ-Bed multi-DIMM chassis.
Not for production deployment on its own
Reference / evaluation article. Production deployments use the volume assembly pipeline in the PLAYBOOK.
4a708664bf65adc7938486e0e0783b7ed451e2abdb416acb0d79bbaf6bc1ca53WPQ-DIMM-4 Reference (4-disc stack)
Publicly online since 2010 · U.S. patent applications since 2012 · inventions offered since 2014. The work of Christopher Gabriel Brown, independently documented.
