MGX
NVIDIA's modular server reference architecture letting partners build varied GPU systems from common building blocks.
Current numbers
~600 kWRubin Ultra Kyber rack (NVL144) on 800 VDC — GTC 2026 also defined NVL576 as an eight-rack MGX system; supply-chain reports (Apr–Jun 2026) say the package was cut to dual-die 2+2 over CoWoS-L warpage, unconfirmed by NVIDIA
72 → 576 → 1152NVLink domain size: NVL72 → Rubin Ultra NVL576 (eight MGX racks) → Kyber NVL1152 (roadmap)
~Q2 2026targeted UL listing for the first SST in NVIDIA's MGX reference (DG Matrix)