The Lenovo ThinkStation PX (a high-end dual-socket Intel Xeon Scalable workstation) supports up to 9 PCIe slots. The exact speeds and lane configurations depend on whether you have one or two CPUs installed, as slots are split between the two CPUs (and some require the second CPU).
This is the full configuration with both Intel Xeon processors installed:
4 × PCIe 5.0 x16 (full height, full length, up to 75W, double-width capable in some positions)
4 × PCIe 4.0 x16 (full height, full length, up to 75W)
1 × PCIe 4.0 x8 (full height, full length, 25W, open-ended)
Total: 9 slots (all full-height).
Single PSU1850WFull output at 200–240V AC input.
At 115–127V: still 1850W.
At 100–110V: limited to 1400–1500W.Dual PSUs – Redundant mode1850W (system total)One PSU acts as backup. The system is limited to the capacity of a single PSU for full redundancy. Hot-swap supported.Dual PSUs – Team mode2350WBoth PSUs actively share the load (no redundancy).
Highest power mode, ideal for heavy GPU/CPU configurations.
At lower voltages (100–110V) output is still capped accordingly.