Intel CORE I7-900 DEKSTOP - SPECIFICATION Specification page 56

Implication: Due to this erratum the system may hang if writes to the
MC_CHANNEL_{0,1,2}_MC_DIMM_INIT_CMD.DO_ZQCL field are not in
increasing populated DDR3 rank order.
Workaround: BIOS workaround has been identified. Please refer to the latest version of
BIOS Memory Reference Code and release notes.
For the steppings affected, see the Summary Table of Changes.
Status:
AAJ111. Concurrent Updates to a Segment Descriptor May be Lost
If a logical processor attempts to set the accessed bit in a code or data
Problem:
segment descriptor while another logical processor is modifying the same
descriptor, both modifications of the descriptor may be lost.
Implication: Due to this erratum, updates to segment descriptors may not be preserved.
Intel has not observed this erratum with any commercially available software
or system.
Workaround: None identified.
For the steppings affected, see the Summary Table of Changes.
Status:
AAJ112. Memory Controller Clock Circuits May Show a Temperature Sensitive
Dependence on Power-On Conditions
A large temperature delta between power-on and run time may affect
Problem:
memory controller clock circuits and subsequently could result in memory
errors.
Implication: Correctable/Uncorrectable ECC errors may be observed on a system with
memory ECC enabled. On systems that do not have memory ECC enabled,
unpredictable system behavior may be observed.
Workaround: It is possible for the BIOS to contain a workaround for this erratum, along
with the latest Intel® Tylersburg Platform CPU/QPI/Memory Reference Code.
For the steppings affected, see the Summary Table of Changes.
Status:
AAJ113. PMIs May be Lost During Core C6 Transitions
If a performance monitoring counter overflows and causes a PMI
Problem:
(Performance Monitoring Interrupt) at the same time that the core is entering
C6, then the PMI may be lost.
Implication: PMIs may be lost during a C6 transition.
Workaround: None identified.
For the steppings affected, see the Summary Table of Changes.
Status:
Errata
®
Intel Core™ i7 processor
Specification Update