Intel MFS5520VI User Manual

Intel® Compute Module MFS5520VI TPS

Functional Architecture

Revision 1.3

Intel order number: E64311-005

Error

Severity

System Action

Processor microcode
missing

Minor

The BIOS detects the error condition and responds as follows:

Logs the error.

Does not disable the processor.

Displays “8180: Processor 0x microcode update not found”

message in the Error Manager or on the screen.

The system continues to boot in a degraded state, regardless of

the setting of POST Error Pause in the Setup.

3.1.3

Turbo Mode

The Turbo Mode feature allows processors to program thresholds for power/current which can
increase platform performance by 10%.

If the processor supports this feature, the BIOS setup provides an option to enable or disable
this feature. The default is disabled.

3.1.4

Hyper-Threading

Most Intel

Xeon

processors support Intel

Hyper-Threading Technology. The BIOS detects

processors that support this feature and enables the feature during POST.

If the processor supports this feature, the BIOS Setup provides an option to enable or disable
this feature. The default is enabled.

3.1.5

Intel

QuickPath Interconnect

Intel

QPI is a cache-coherent, link-based interconnect specification for processor, chipset, and

I/O bridge components. Intel

QPI provides support for high-performance I/O transfer between

I/O nodes. It allows connection to standard I/O buses such as PCI Express*, PCI-X, PCI
(including peer-to-peer communication support), AGP, and so on, through appropriate bridges.

Each Intel

QPI link consists of 20 pairs of uni-directional differential lanes for the transmitter

and receiver, plus a differential forwarded clock. A full-width Intel

QPI link pair consists of 84

signals (20 differential pairs in each direction plus a forwarded differential clock in each
direction). Each Intel

Xeon

Processor 5500 series and Intel

Xeon

Processor 5600 series

processors support two Intel

QPI links, one going to the other processor and the other to the

Intel

5520 IOH.

In the current implementation, Intel

QPI ports are capable of operating at transfer rates of up to

6.4 GT/s. Intel

QPI ports operate at multiple lane widths (full - 20 lanes, half - 10 lanes, quarter

- 5 lanes) independently in each direction between a pair of devices communicating through
Intel

QPI. The Compute Module supports full width communication only.