Alduin86

@melorin83 Could you elaborate how you connected the HDDs to the mainboard? Are you using the SlimSAS or the standart sata ports? Or do you have an HBA? I tested my Asus W860 Ace with this configuration the last days (no IPMI): Intel Core I5-13500T 64GB DDR5 ECC 2x NVME 4x SATA BIOS 4101 My findings: Using the inbuild LAN locks the board for me to C3. Using my own 2.5G card in any PCIE slot instead gets me to C6. Using only the bottom M.2 Slots and no PCIE card gets me to C8. Using the top M.2 Slot drops me again to C6. I activated all relevant ASPM settings, disabled audio/bluetooth/serial port and activated ALPM as well as setting the C state limit manually to C10. C6 is fine tbh, but now comes the caveat: Connecting ANY of my ssds to the native sata slots drops me to C2 (tried Samsung SM863a, 850 Evo as well as Micron 5100 Ecos). I am currently lacking a SlimSAS cable so I cant test these ports. As a reference, I could hit with the same configuration of hardware C6 without problems on a Asus Z790M-Plus, so there seems something to be off with the SATA controller in this board.