Chapter 4: UEFI BIOS
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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
.
*If the feature above is set to Enable, Patrol Scrub Interval will be available for
configuration:
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
IOU0 (II0 PCIe Br1)
Use this feature to configure the PCI-E port Bifuraction setting for a PCI-E port speci
-
fied by the user. The options are x4x4x4x4, x4x4x8, x8x4x4, x8x8, x16, and
Auto
.
IOU1 (II0 PCIe Br2)
Use this feature to configure the PCI-E port Bifuraction setting for a PCI-E port speci
-
fied by the user. The options are x4x4x4x4, x4x4x8, x8x4x4, x8x8, x16, and
Auto
.
IOU2 (II0 PCIe Br3)
Use this feature to configure the PCI-E port Bifuraction setting for a PCI-E port speci
-
fied by the user. The options are x4x4x4x4, x4x4x8, x8x4x4, x8x8, x16, and
Auto
.
RSU-R1UW-2E16 SLOT1 / RSU-R1UW-2E16 SLOT2 (Option Riser
Card)
Link Speed
Use this feature to select the link speed for this port. The options are
Auto
, Gen 1
(2.5 GT/s), Gen 2 (5GT/s), and Gen 3 (GT/s).
