Dell PowerEdge R830 Owner's Manual page 42

Option Description
Snoop Mode Specifies the Snoop Mode options. The Snoop Mode options available are Home Snoop, Early Snoop, and
Cluster on Die. This option is set to Early Snoop by default. This field is available only when the Node
Interleaving is set to Disabled.
Related links
Memory Settings
Viewing Memory Settings
Processor Settings
You can use the Processor Settings screen to view the processor settings, and perform specific functions such as enabling
virtualization technology, hardware prefetcher, and logical processor idling.
Related links
Processor Settings details
System BIOS
Viewing Processor Settings
Viewing Processor Settings
To view the Processor Settings screen, perform the following steps:
1. Turn on, or restart your system.
2. Press F2 immediately after you see the following message:
F2 = System Setup
NOTE: If your operating system begins to load before you press F2, wait for the system to finish booting, and then
restart your system and try again.
3. On the System Setup Main Menu screen, click System BIOS.
4. On the System BIOS screen, click Processor Settings.
Related links
Processor Settings
Processor Settings details
Processor Settings details
The Processor Settings screen details are explained as follows:
Option Description
Logical Processor Enables or disables the logical processors and displays the number of logical processors. If this option is set
to Enabled, the BIOS displays all the logical processors. If this option is set to Disabled, the BIOS displays
only one logical processor per core. This option is set to Enabled by default.
QPI Speed Enables you to control QuickPath Interconnect data rate settings.
Alternate RTID Modifies Requestor Transaction IDs, which are QPI resources. This option is set to Disabled by default.
(Requestor
Transaction ID)
Setting
Virtualization Enables or disables the additional hardware capabilities provided for virtualization. This option is set to
Technology Enabled by default.
Address Translation Defines the Address Translation Cache (ATC) for devices to cache the DMA transactions. This option
Service (ATS) provides an interface between CPU and DMA Memory Management to a chipset's Address Translation and
Protection Table to translate DMA addresses to host addresses. This option is set to Enabled by default.
Adjacent Cache Optimizes the system for applications that need high utilization of sequential memory access. This option is
Line Prefetch set to Enabled by default. You can disable this option for applications that need high utilization of random
memory access.
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NOTE: Enabling this option may negatively impact the overall system performance.