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Coherency Support (Isoch)
Select Enable for the Iscoh VT-d engine to pass through ATS to enhance system
performance. The options are Enable and Disable.
QPI (Quick Path Interconnect) Configuration
The following QPI information will be displayed:
•
Number of CPU
•
Number of II0
•
Current QPI Link Speed: This item displays the current QPI Link speed.
•
Current QPI Link Frequency: This item displays the frequency of the QPI
Link.
•
QPI Global MMIO Low Base / Limit
•
QPI Global MMIO High Base / Limit
•
QPI PCI-E Configuration Base / Siz (Size)
Link Speed Mode
Use this feature to select data transfer speed for QPI Link connections. The op-
tions are Fast and Slow.
Link Frequency Select
Use this feature to select the desired QPI frequency. The options are 6.4 GT/s,
8.0 GT/s, 9.6 GT/s, Auto, and Auto Limited.
Link L0p Enable
Select Enable to enable Link L0p. The options are Disable and Enable.
Link L1 Enable
Select Enable to enable Link L1 (Level 1 link). The options are Disable and
Enable.
Isoc Mode
Select Enabled to enable Isochronous support to meet QoS (Quality of Service)
requirements. This feature is especially important for Virtualization Technology.
The options are Enable and Disable.
7-9
Chapter 7: BIOS
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