7-21
Chapter 7: BIOS
Maximum Read Request
Select Auto to allow the system BIOS to automatically set the maximum Read
Request size for a PCI-E device to enhance system performance. The options are
Auto
, 128 Bytes, 256 Bytes, 512 Bytes, 1024 Bytes, 2048 Bytes, and 4096 Bytes.
ASPM Support
This feature allows the user to set the Active State Power Management (ASPM)
level for a PCI-E device. Select Force L0s to force all PCI-E links to operate at L0s
state. Select Auto to allow the system BIOS to automatically set the ASPM level for
the system. Select Disabled to disable ASPM support. The options are
Disabled
,
Force L0s, and Auto.
Warning
: Enabling ASPM support may cause some PCI-E devices to fail!
MMIOHBase
Use this item to select the base memory size according to memory-address map-
ping for the PCH. The base memory size must be between 4032G to 4078G. The
options are
56T
, 40T, 24T, 3584G, 2T, 512G, and 256G.
MMIO High Size
Use this item to select the high memory size according to memory-address mapping
for the PCH. The options are 32G, 64G,
128G
, 256G, 512G, and 1024G.
CPU1 PCI-E 3.0X8 SLOT2 OPROM/CPU2 PCI-E 3.0X8 SLOT3 OPROM/
PCH PCI-E 2.0X4 SLOT4 OPROM/RSC-R4UFF-A2ED16A SLOT1 PCI-E X16
OPROM/Onboard SAS Option ROM
Select Enabled to enable Option ROM support
CPU1 Slot 1 PCI-E x8 OPROM/CPU1 Slot 2 PCI-E x16 OPROM/CPU2 Slot
3 PCI-E x8 OPROM/CPU2 Slot 4 PCI-E x16 OPROM/CPU2 Slot 5 PCI-E x8
OPROM/CPU3 Slot 6 PCI-E x8 OPROM/CPU3 Slot 7 PCI-E x8 OPROM/CPU4
Slot 8 PCI-E x8 OPROM/CPU3 Slot 9 PCI-E x16 OPROM/CPU4 Slot 10 PCI-E
3.0 x8 OPROM/CPU4 Slot 11 PCI-E x16 OPROM
Select Enabled to enable Option ROM support to boot the computer using a device
installed on the slot specified by the user. The options are
Enabled
and Disabled.
Onboard Video OPROM
This feature controls how the system executes UEFI (Unified Extensible Firmware
Interface), and legacy Option ROM. Select Legacy Only to boot the system using a
legacy video device. The options are Do not launch, UEFI Only and
Legacy Only
.
VGA Priority
This feature allows the user to select the graphics adapter to be used as the primary
boot device. The options are
Onboard
and Offboard.
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