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Patrol Scrub
Patrol Scrubbing is a process that allows the CPU to correct correctable memory errors
detected on a memory module and send the correction to the requestor (the original
source). When this feature is set to Enable, the IO hub will read and write back one
cache line every 16K cycles if there is no delay caused by internal processing. By us-
ing this method, roughly 64 GB of memory behind the IO hub will be scrubbed every
day. The options are Disable and Enable.
Patrol Scrub Interval
This feature allows you to decide how many hours the system should wait before the
next complete patrol scrub is performed. Use the keyboard to enter a value from 0-24.
The default setting is 24.
IIO Configuration
EV DFX Features
When this feature is set to Enable, the EV_DFX Lock Bits that are located on a proces-
sor will always remain clear during electric tuning. The options are Disable and Enable.
CPU Configuration
IOU1 (II0 PCIe Br2)
This feature configures the PCI-E port Bifuraction setting for a PCI-E port specified by
the user. The options are x4x4x4x4, x4x4x8, x8x4x4, x8x8, x16, and Auto.
IOU2 (II0 PCIe Br3)
This feature configures the PCI-E port Bifuraction setting for a PCI-E port specified by
the user. The options are x4x4x4x4, x4x4x8, x8x4x4, x8x8, x16, and Auto.
CPU SLOT7 PCI-E 3.0 x16/CPU SLOT1 PCI-E 3.0 x16/M.2C01 PCI-E
3.0 x4/M.2C02 PCI-E 3.0 x4/M.2C03 PCI-E 3.0 x4/M.2C04 PCI-E 3.0 x4
Link Speed
Use this feature to select the link speed for the PCI-E port specified by the user. The
options are Auto, Gen 1 (2.5 GT/s), Gen 2 (5 GT/s), and Gen 3 (8 GT/s).
The following information will also be displayed:
•
PCI-E Port Link Status
•
PCI-E Port Link Max
•
PCI-E Port Link Speed
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Chapter 6: UEFI BIOS
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