Question about ASUS P4P800 SE (890552603657) Motherboard
I have a P4 2.8 533 FSB Northwood processor on it.
According to the manual I should be able to use dual-channel PC2700 DDR DIMMs. But I can run the DDRs only in single-channel mode. In fact, if I don't plug in an old Micron PC2100 512MB module in one of the 4 slots, the thing won't boot. I.e. a matching pair of Kingston PC2700 (1G each), won't work alone in slot 1 and 3. If I plug in the Micron, they all work in single channel.
Is it a board problem, i.e. the North bridge or the processor?
Have you checked the bios setup may not be the problem but worth a try
My computer recognized dual channel automatically do you have them set in correct Channels as they are specific for dual channel
normally labeled 1 2 3 4 etc must put dual channel ram in 1 and 2 channel
Posted on Jul 25, 2008
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Posted on Jan 02, 2017
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You can install 128 MB, 256 MB, 512 MB, and 1GB DDR SDRAM DIMMs into the DIMM sockets using the memory configurations in this section.
• Install only identical (the same type and size) DDR DIMM pairs
using the recommended configurations.
• Make sure that the memory frequency matches the CPU FSB
(Front Side Bus). Refer to the Memory frequency/CPU FSB
synchronization table on the next page.
• This motherboard does not support double-sided 16-bit DDR DIMMs.
• Do not create a three-DIMM configuration in dual-channel mode. The
third DIMM is ignored in the dual-channel operation.
Recommended memory configurations
Memory frequency/CPU FSB synchronization
* Use only identical DDR DIMM pairs.
Mode DIMM1 DIMM2 DIMM3 DIMM4
Single-channel (1) Installed - - -
(2) - Installed - -
(3) - - Installed -
(4) - - - Installed
Dual-channel* (1) Installed - Installed -
(2) - Installed - Installed
(3) Installed Installed Installed Installed
CPU FSB DDR DIMM Type Memory Frequency
800 MHz PC3200 400 MHz
533 MHz PC3200/PC2700 400/333 MHz
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