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2.5
System memory
2.5.1 Overview
The motherboard comes with four Double Data Rate (DDR) Dual Inline
Memory Module (DIMM) sockets. These sockets support up to 4GB
system memory using 184-pin unbuffered ECC or non-ECC PC3200/
PC2700/PC2100 DDR DIMMs, and allow up to 6.4GB/s data transfer rate.
The following figure illustrates the location of the DDR DIMM sockets.
®
P4C800
P4C800 184-Pin DDR DIMM Sockets
2.5.2 Memory configurations
You may install 64MB, 128MB, 256MB, 512MB, and 1GB DDR DIMMs into
the DIMM sockets using the memory configurations in this section.
Important notes
1. Installing DDR DIMMs other than the recommended configurations
2. In dual-channel configurations, install only identical (the same
3. Always install DIMMs with the same CAS latency. For optimum
4. Make sure that the memory frequency matches the CPU FSB
5. DIMMs installed into any three sockets will function in single-
6. When all four sockets are populated with 1GB DIMMs (total 4GB),
2-10
may cause memory sizing error or system boot failure. Use any of
the recommended configurations in Table 1.
type and size) DDR DIMM pairs for each channel.
compatibility, it is recommended that you obtain memory modules
from the same vendor.
(Front Side Bus). Refer to Table 2.
channel mode.
the system may detect only 3+GB (a little less than 4GB) due to
ICH5 resource allocation.
Chapter 2: Hardware information
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