Specifications

Product Errata 81
Revision Guide for AMD Athlon™ 64 and AMD Opteron™ Processors
25759 Rev. 3.79 July 2009
123 Bypassed Reads May Cause Data Corruption or System Hang
in Dual Core Processors
Description
An internal data path allows some cache line fill requests to bypass the L2 cache and initiate an early
DRAM read before receiving hit/miss status from the cache. Under certain timing conditions at low
core frequencies, read data from such a request may be returned to the processor core before the core
is ready, resulting in an internal bus hang or a corrupted victim data buffer.
Potential Effect on System
Data corruption or system hang.
Suggested Workaround
Contact your AMD representative for information on a BIOS update.
Fix Planned
Yes