Model-specific questions, source references and configuration guidance. Confirm the exact platform and bill of materials before ordering.
No. The official internal-view diagram labels position 3 as mechanical. Electrical slots comprise four Gen5 x16, one Gen4 x16 and one Gen4 x4. Plan expansion around those six electrical slots and card widths; a mechanical position does not provide PCIe lanes.
No. HP conditions the 1TB maximum on availability of supported 128GB DIMMs, and actual speed depends on the processor and memory parts. Confirm the exact CPU, DIMM part numbers and availability in the quotation. A platform maximum does not validate every 128GB DIMM or imply a fully populated system is in stock.