2-12
Chapter 2: Hardware information
2.4 System memory
2.4.1 Overview
The motherboard comes with four Double Data Rate (DDR) Dual Inline
Memory Module (DIMM) sockets.
The following figure illustrates the location of the sockets.
2.4.2 Memory configurations
You may install 64 MB, 128 MB, 256 MB, 512 MB, and 1GB DDR DIMMs
into the DIMM sockets using the memory configurations in this section.
Important notes on memory configurations
1. Installing DDR DIMMs other than the recommended configurations
may cause memory sizing error or system boot failure. Use any of
the recommended configurations in Table 1.
2. Use the blue DIMM slots first.
3. In Dual-channel configurations, install only identical (the same type
and size) DDR DIMM pairs for each channel.
4. Always install DIMMs with the same CAS latency, otherwise, the
system may run in a lower frequency. For optimum compatibility, it
is recommended that you obtain memory modules from the same
vendor. See list of Qualified Vendors List on page 2-13.
5. When all four sockets are populated with 1GB DIMMs (total 4 GB),
the system may detect only 3+GB (a little less than 4 GB) due to
the Southbridge resource allocation.
6. Three DDR DIMMs installed into any three memory sockets will
function in single channel mode.
7. Make sure that the memory frequency matches the CPU FSB.
Refer to Table 2 for configurations.
P4P800 SE
®
P4P800 SE 184-Pin DDR DIMM Sockets
80 Pins104 Pins
DIMM_A1
DIMM_A2
DIMM_B1
DIMM_B2
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