Lenovo ThinkStation P8 Hardware Maintenance Manual page 38

Location Rules
You computer has seven PCIe slots. PCIe slot types and PCIe card installation priority are as
follows:
3. PCIe slots
You computer has eight memory slots for installing the following memory modules:
• 16 GB, 32 GB, or 64 GB DDR5-4800 ECC RDIMM
• 128 GB DDR5-4800 ECC 3DS-RDIMM
Notes:
• Supported memory module quantity: 1 pc, 2 pcs, 4 pcs, 6 pcs, or 8 pcs
• Install memory modules of the same type and the same capacity.
• Install memory modules in the order shown in the following illustration::
4. Memory slots
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ThinkStation P8 Hardware Maintenance Manual