10 Intel Desktop Board D945GTP Specification Update
Errata
1. Hardware Monitoring and Fan Control Could Fail and Only Run at a Maximum or
Minimum PWM for CPU Fan
PROBLEM: The Hardware Monitoring and Fan Control may only support up to 3.6V
on its Pulse Width Modulation (PWM) outputs. The 4-pin fans used with the Intel
Desktop board could have a pull up voltage as high as 5.25V, potentially causing
failures in the circuit used for fan control on this Intel Desktop Board.
IMPLICATION: If Hardware Monitoring and Fan Control fails due to this erratum, the
CPU fan could run at either 100% PWM, or at a minimum PWM (normally set to
30% PWM for four-pin CPU fans). A failure at 100% PWM could result in louder
system acoustics. A failure at minimum PWM may result in the reduced heat sink
efficiency being insufficient to fully support the processor thermal requirements at
some higher work loads. A variety of conditions such as room temperature, heat
sink characteristics, application, workload and chassis design will affect the impact
of the PWM failure. If the thermal requirements of the processor are not met, the
processor will attempt to reduce its own temperature. Depending on the severity
of the ASIC failure, this may result in a noticeable performance reduction.
WORKAROUND: None
STATUS: This erratum has been fixed. Refer to the Product Change Notification
105498-01 available at
http://developer.intel.com/design/pcn/MTHRBRD/index.htm.
2. Digital Noise May Affect Audio Quality When Using the Rear MIC Input on boards
with a 6-Channel (5.1) Audio Subsystem
PROBLEM: Digital noise may affect audio quality when using the rear MIC input on
boards with a 6-Channel (5.1) Audio Subsystem. The digital noise can affect the
MIC signal via the Codec’s MIC bias voltage.
IMPLICATION: Digital noise may be heard on the rear MIC input when systems are
used in the following configuration: input monitor enabled in drivers, MIC boost set
to 20dB gain, and MIC volume set to maximum. The digital noise may be heard
when recording voice, during voice chat, when dragging window around the screen,
or when opening and closing windows. No noise issues have been associated with
the front panel MIC input.
WORKAROUND: None
STATUS: This erratum may be fixed in a future board revision.
3. The placement of capacitors behind PCI Express* x1 connector slot 1 may prohibit
some PCI Express x1 add-in cards from properly connecting to the motherboard
PROBLEM: Due to the design and placement of the audio circuitry on this
motherboard, it was necessary to position capacitors in the keep-out zone behind
PCI Express* x1 connector slot 1.
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