Intel E6320 Specification Update - Page 55
The Processor May Not Properly Execute Code Modified Using
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BJ116. Problem: Reported Maximum Memory Frequency Capability May Be Higher Than Expected The Intel® Pentium® Processor G645, Intel® Pentium® Processor G645T and Intel® Celeron® Processor G555 are specified for 1066 MT/s maximum DDR3 memory frequency, but report support for 1333 MT/s.The value in the DDR3 Maximum Frequency Capability (CAPID0_A - Capabilities A Register Device 0; Function 0; Offset E4-E7H; bits [2:0]) may indicate a higher than expected value of 110b, specifying that the memory controller will operate at a maximum of 1333 MT/s. The memory interface will operate as per the table below. Processor Number G645 G645T G555 DDR3 DIMM Type 1066 >=1333 1066 >=1333 1066 >=1333 One DIMM/Channel Memory Frequency 1066 MT/s 1333 MT/s 1066 MT/s 1333 MT/s 1066 MT/s 1333 MT/s Two DIMM/Channel Memory Frequency 1066 MT/s 1333 MT/s 1066 MT/s 1333 MT/s 1066 MT/s 1066 MT/s Implication: There may be a slight increase to power or thermal characteristics at the faster memory speed. At the faster memory speed the processor still functions correctly and within the published power and thermal specifications. Workaround: None identified. Status: For the steppings affected, see the Summary Tables of Changes. BJ117. The Processor May Not Properly Execute Code Modified Using A Floating-Point Store Problem: Under complex internal conditions, a floating-point store used to modify the next sequential instruction may result in the old instruction being executed instead of the new instruction. Implication: Self- or cross-modifying code may not execute as expected. Intel has not observed this erratum with any commercially available software. Workaround: None identified. Do not use floating-point stores to modify code. Status: For the steppings affected, see the Summary Tables of Changes. Specification Update 55