Datasheet

Summary Tables of Changes
12 Specification Update
Stepping
Number
C0 D0 Dual Core
Only
Plans ERRATA
AE21 X X X No Fix
Disable Execution-Disable Bit (IA32_MISC_ENABLES [34]) Is
Shared between Cores
AE22 X X No Fix
Last Branch Records (LBR) Updates May Be Incorrect after a
Task Switch
AE23 X X No Fix
Address Reported by Machine-Check Architecture (MCA) on
Single-Bit L2 ECC Errors May Be Incorrect
AE24 X X No Fix
Disabling of Single-Step On Branch Operation May Be Delayed
following a POPFD Instruction
AE25 X X No Fix
Performance Monitoring Counters That Count External Bus
Events May Report Incorrect Values after Processor Power
State Transitions
AE26 X X No Fix
VERW/VERR/LSL/LAR Instructions May Unexpectedly Update
the Last Exception Record (LER) MSR
AE27 X X No Fix
General Protection (#GP) Fault May Not Be Signaled on Data
Segment Limit Violation above 4-G Limit
AE28 X X No Fix
Performance Monitoring Events for Retired Floating Point
Operations (C1h) May Not Be Accurate
AE29 X X No Fix
DR3 Address Match on MOVD/MOVQ/MOVNTQ Memory Store
Instruction May Incorrectly Increment Performance Monitoring
Count for Saturating SIMD Instructions Retired (Event CFH)
AE30 X X No Fix
Global Pages in the Data Translation Look-Aside Buffer (DTLB)
May Not Be Flushed by RSM instruction before Restoring the
Architectural State from SMRAM
AE31 X X No Fix
Data Breakpoint/Single Step on MOV SS/POP SS May Be Lost
after Entry into SMM
AE32 X X No Fix
Code Segment Limit/Canonical Faults on RSM May be Serviced
before Higher Priority Interrupts/Exceptions and May Push the
Wrong Address Onto the Stack
AE33 X Fixed
Hardware Prefetch Performance Monitoring Events May Be
Counted Inaccurately
AE34 X X No Fix
Pending x87 FPU Exceptions (#MF) following STI May Be
Serviced before Higher Priority Interrupts
AE35 X X No Fix
Programming the Digital Thermal Sensor (DTS) Threshold May
Cause Unexpected Thermal Interrupts
AE36 X X Fixed
CPU_CLK_UNHALTED Performance Monitoring Event (3CH)
Counts Clocks When the Processor Is in the C1/C2 Processor
Power States
AE37 X X No Fix The Processor May Report a #TS Instead of a #GP Fault
AE38 X X No Fix BTS Message May Be Lost When the STPCLK# Signal Is Active
AE39 X X No Fix
Certain Performance Monitoring Counters Related to Bus, L2
Cache and Power Management Are Inaccurate