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Installing and Replacing Desktop Board Components
33
Installing DIMMs
Before installing DIMMs, read and follow these guidelines for dual channel configuration.
NOTE
Performance Acceleration Technology (PAT) requires a processor with 800 MHz FSB frequency
and DDR400 memory.
Install a matched pair of DIMMs equal in speed, size, and technology (see Figure 8) in
DIMM 0 in both channels A and B.
Channel A
256 MB, 128 Mb, DDR400
DIMM 0
DIMM 1
Channel B
256 MB, 128 Mb, DDR400
DIMM 0
DIMM 1
Figure 8. Dual Configuration Example with Two DIMMs
If additional memory is to be used, then install another matched pair of DIMMs in DIMM 1 in
both channels A and B (see Figure 9).
Channel A
256 MB, 128 Mb, DDR400
DIMM 0
512 MB, 256 Mb, DDR400
DIMM 1
Channel B
256 MB, 128 Mb, DDR400
DIMM 0
512 MB, 256 Mb, DDR400
DIMM 1
Figure 9. Dual Configuration Example with Four DIMMs
NOTE
All other memory configurations will result in single channel memory operation.