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Patrol Scrub
Patrol Scrub 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 the user 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.
Patrol Scrub Address Mode
Use this feature to select the Patrol Scrub Address mode. The options are Reverse
Address and System Physical Address.
IIO Configuration
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.
CPU1 Configuration
IOU0 (II0 PCIe Br1) / IOU2 (II0 PCIe Br3)
This features configure 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.
Socket 0 PcieBr0D00F0 - Port 0/DMI
Link Speed
This feature configures the link speed of a PCI-E port specified by the user. The
options are Auto, Gen 1 (Generation 1) (2.5 GT/s), Gen 2 (Generation 2) (5 GT/s),
and Gen 3 (Generation 3) (8 GT/s).
PCI-E Port Link Status
This feature displays the current PCI-E Link Status.
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Chapter 4: UEFI BIOS
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