The system may get a bit of less boot time when having PCIe L0s and PCIe L1 disabled in BIOS, but as for within the Operating System, there's no performance gain.
Thanks for the information...if I could ask an additional question...
I'm sure Intel included these settings in the BIOS for a reason but I suspect that reason is not clear to most amateur users. Are they there to resolve a possible incompatability with or meet a specific requirement of certain PCIe devices or what? How would one know that they may need to be changed?
Thanks again for any help
Both, PCIe L0s and PCIe L1, are part of or refer to Active State Power Management (ASPM), incorporated into the PCIe* Technology as a method to better manage system power consumption. While L0 places a single direction of the PCI Express Link into a low power state, L1 places both directions. Basically, for systems with add-in cards, PCI Express* ASPM could be used to lower system level idle power. For instance, when the card is in the D0 state, the PCI Express link can be in a lower power L1 state - reducing the system level power. For more details on ASPM or PCIe L0s and PCIe L1, please, refer to page 11 of the PCI Express* Architecture Power Management document here: