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Dell R750xa JPJ1ZP3, 2x RTX 6000 Ada to be fitted, ComfyUI's new home at NH3. Diffing Dell's factory CSV against the reseller invoice shows four downgrades: half the RAM, the 2400 W PSUs, and the GPU risers, cables and high-performance fans all absent. Records the resolved GPU power chain, correcting my own first answer: the chassis' CPU 8-pin cabling is the right source type and NVIDIA 930-00030-1546-000 bridges it to the card's 12VHPWR, so the PCIe-type RCCWC I first proposed is withdrawn. Also closes the NVMe question — the backplane is SAS/SATA only — and notes that free PCIe slots may moot it. Auto-archival fired at 308 lines; seven entries moved to archival-memory.md. The 250-line target was not reached because the guards hold nearly everything else back as under 14 days or carrying open deferred work.