64-bit Intel Xeon Processor MP with 1MB L2 Cache Specification Update
64-bit Intel
®
 Xeon
®
 Processor MP with up to 1 MB L2 Cache Specification Update 11
Summary Table of Changes
V = Mobile Intel
®
 Celeron
®
 processor on .13 micron process in micro-FCPGA package
W= Intel
®
 Celeron
®
 M processor
X=Intel
®
 Pentium
®
 M processor on 90 nm process with 2 MB L2 cache
Y=Intel
®
 Pentium
®
 M processor
Z = Mobile Intel
®
 Pentium
®
 4 processor with 533 MHz system bus
AA= Intel
®
 Pentium
®
® processor Extreme Edition and Intel
®
 Pentium
®
 D processor on 65nm 
process 
AB = Intel
®
 Pentium
®
 4 processor on 65 nm process 
AC = Intel
®
 Celeron
®
 processor in 478 Pin Package 
AD= Intel
®
 Celeron
®
 D processor on 65nm process 
AE = Intel
®
 Core
TM
 Duo Processor and Intel
®
 CoreTM Solo processor on 65nm process 
AF  = Dual-Core Intel
®
 Xeon
®
 processor LV 
The Specification Updates for the Pentium
®
 processor, Pentium
®
 Pro processor, and other Intel 
products do not use this convention.
Errata (Sheet 1 of 4)
No.
A-0/
0F41h
B-0/
0F49H
Plans Errata
J1 X X No Fix Transaction is not retired after BINIT# 
J2 X X No Fix Invalid opcode 0FFFh requires A ModRM byte
J3 X X No Fix Processor may hang due to speculative page walks to non-existent system memory
J4 X X No Fix Memory type of the load lock different from its corresponding store unlock
J5 X X No Fix Machine check architecture error reporting and recovery may not work as expected
J6 X X No Fix Debug mechanisms may not function as expected
J7 X X No Fix Cascading of performance counters does not work correctly when forced overflow is 
enabled
J8 X X No Fix EMON event counting of x87 loads may not work as expected
J9 X X No Fix System bus interrupt messages without data and which receive a hardfailure response may 
hang the processor
J10 X X No Fix The processor signals page fault exception (#PF) instead of alignment check exception 
(#AC) on an unlocked CMPXCHG8B instruction
J11 X X No Fix FSW may not be completely restored after page fault on FRSTOR or FLDENV instructions
J12 X X No Fix Processor issues inconsistent transaction size attributes for locked operation
J13 X X No Fix When the processor is in the system management mode (SMM), debug registers may be 
fully writeable
J14 X X No Fix Shutdown and IERR# may result due to a machine check exception on a Hyper-Threading 
Technology enabled processor
J15 X X No Fix Processor may hang under certain frequencies and 12.5% STPCLK# duty cycle
J16 X X No Fix System may hang if a fatal cache error causes Bus Write Line (BWL) transaction to occur to 
the same cache line address as an outstanding Bus Read Line (BRL) or Bus 
Read-Invalidate Line (BRIL)
J17 X X No Fix A write to an APIC register sometimes may appear to have not occurred
J18 X X No Fix Parity error in the L1 cache may cause the processor to hang
J19 X X No Fix Sequence of locked operations can cause two threads to receive stale data and cause 
application hang
J20 X X No Fix Locks and SMC detection may cause the processor to temporarily hang










