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AMD OpteronTM Processor Models
x52 and x54 Production Notice:
Processor Frequency Margin Test Escape
AMD has identified, and subsequently corrected, a test escape that occurred in our post-
manufacturing testing process for a limited number of single-core AMD OpteronTM processor models
x52 (2.6 GHz) and x54 (2.8 GHz) as shown in the following table.
Uni- Dual Multi-
Revision Max P-State No. Cores DRAM Package
Processor Processor Processor
E4 2600 MHz 152 252 852 Single DDR1 940 Pin
E4 2800 MHz N/A 254 854 Single DDR1 940 Pin
E4 2600 MHz 152 N/A N/A Single DDR1 939 Pin
E4 2800 MHz 154 N/A N/A Single DDR1 939 Pin
No AMD Opteron products that are currently being shipped are affected, and this test escape has had
no impact on other AMD processors.
The affected processors may produce inconsistent results in the presence of three specific conditions
occurring simultaneously: