I recently installed 2 x 1GB DDR2 DIMM's on an Asus WS64 Quartet server board, 975X chipset, Conroe 6600 CPU. I am not tweaking or overclocking this memory. I also have 1 GB total of meory on the video cards in the system. This should have me below the 4GB limit. Dumb question, but here goes: If I right-click on My Computer and choose "Properties" it says I only have 1.37GB of RAM installed. All other info, such as CPU speed, is correct. If I look at CPU-Z utility, it says I have 2048MB installed, which is, again, what I installed. Is WinXP Pro not recognizing something? My BIOS post screen also correctly shows 2048MB installed as dual channel, interleaved, etc. Why is it just WinXP Pro showing a lower number? Is there something wrong with my system? Is some memory not available for access? Needless to say, I am not using integrated graphics, so I assume memory is not being stolen for an integrated controller. Thanks for any info/help.