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15
NOTE
Regardless of the DIMM type used, the memory frequency will either be equal to or
less than the processor system bus frequency. For example, if DDR2 667 memory is
used with a 533 MHz system bus frequency processor, the memory will operate at
533 MHz. Table 3 lists the resulting operating memory frequencies based on the
combinatio
n of DIMMs and processors.
Table 3. Memory Operating Frequencies
DIMM Type
Processor system bus
frequency
Resulting memory
frequency
DDR2 533 533 533
DDR2 533 800 533
DDR2 533 1066 533
DDR2 667 533 533
DDR2 667 800 667
DDR2 667 1066 667
DDR2 800 533 533
DDR2 800 800 800
DDR2 800 1066 800
Related Links
Go to the following links or pages for more information about:
• The latest list of tested memory,
http://support.intel.com/support/motherboards/desktop/
• SDRAM specifications, http://www.intel.com/technology/memory/
• Installing memory, page 34 in Chapter 2
Intel
®
975X Express Chipset
The Intel 975X Express Chipset consists of the following devices:
• Intel 82975X Memory Controller Hub (MCH) with Direct Media Interface
• Intel 82801GH I/O Controller Hub (ICH7DH)
Related Link
Go to the following link for more information about the Intel 975X Express Chipset:
http://www.intel.com/products/desktop/chipsets