DGX Spark & GB10 Clustering Guide

Everything you need to connect two or more NVIDIA DGX Spark systems, or any of the GB10 machines from ASUS, Dell, HP, Lenovo, MSI, Gigabyte and Acer: which cable to buy, how the ConnectX-7 QSFP ports work, switch and switchless cluster layouts, and what to do when a link comes up slower than it should.

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1Two nodesHow to Connect Two NVIDIA DGX Spark Systems: The Cable You Need and Why This is where most people get stuck. NVIDIA's DGX Spark documentation names two approved cables for connecting Sparks: the Amphenol NJAAKK-N911 and the Luxshare LMTQF022-SD-R (both QSFP112 passive... Read the guide → 2Pick a cableNJAAKK-N911 vs NJAAKK-0006 vs LMTQF022-SD-R: Which DGX Spark Cable Do You Actually Need? Several part numbers circulate for the NVIDIA DGX Spark stacking cable — NJAAKK-N911, NJAAKK-0006, LMTQF022-SD-R and compatible-market variants. They are one specification across two manufacturers and two lengths.... Read the guide → 3Other GB10 systemsDoes the DGX Spark Cable Work With Every GB10 System? (ASUS, Dell, HP, MSI, Lenovo, Gigabyte & Acer) If you picked up an ASUS Ascent GX10, a Dell Pro Max GB10, an HP ZGX Nano AI Station, an MSI EdgeXpert MS-C931, a Lenovo ThinkStation PGX, a... Read the guide → 4Scale to 4+ nodesCan You Build a 4-Node DGX Spark Cluster Without a Switch? The Ring That Works and the Breakout Trick That Doesn't A four-node full mesh can't be built and Spark ports don't split — but a switchless four-node ring works with custom NCCL software, outside NVIDIA support. Ring vs.... Read the guide →

Cables for DGX Spark & GB10

Stacking cables for two-node setups and 400G breakout cables for switch-based clusters.

QSFP112 400G passive DAC stacking cable, 0.5m, for NVIDIA DGX Spark NJAAKK-N911 QSFP112 400G-Rated Passive DAC Cable, 0.5m – Stacking Cable for NVIDIA DGX ... $174.00In stock LMTQF022-SD-R Equivalent QSFP112 400G-Rated Passive DAC, 0.5m – Stacking Cable for NVIDIA DGX Spark, ASUS Ascent GX10, Dell Pro Max GB10, HP ZGX Nano LMTQF022-SD-R Equivalent QSFP112 400G-Rated Passive DAC, 0.5m – Stacking Cable for NVID... $174.00In stock MCP1650-V00AE30 200G QSFP56 passive DAC cable, 0.5m, for NVIDIA DGX Spark MCP1650-V00AE30 QSFP/CX7 Cable — 200G QSFP56 Passive DAC, 0.5m – NVIDIA DGX Spark Compa... $84.00In stock MCP7H60 400G QSFP-DD to 2x200G QSFP56 passive breakout DAC cable MCP7H60-W001 NVIDIA/Mellanox Compatible, 400G QSFP-DD to 2x200G QSFP56 Passive Breakout... $149.00In stock MCP7H60 400G QSFP-DD to 2x200G QSFP56 passive breakout DAC cable MCP7H60-W01AR30 NVIDIA/Mellanox Compatible, 400G QSFP-DD to 2x200G QSFP56 Passive Break... $169.00In stock MCP7H60 400G QSFP-DD to 2x200G QSFP56 passive breakout DAC cable MCP7H60-W002 NVIDIA/Mellanox Compatible, 400G QSFP-DD to 2x200G QSFP56 Passive Breakout... $179.45In stock MCP7H60 400G QSFP-DD to 2x200G QSFP56 passive breakout DAC cable MCP7H60-W003 NVIDIA/Mellanox Compatible, 400G QSFP-DD to 2x200G QSFP56 Passive Breakout... $199.00In stock NVDGXSPARK-PB, NVIDIA DGX Spark NVDGXSPARK-PB, NVIDIA DGX Spark $5,495.00Request a quote

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