Please helpI've got the following:CPU name: Intel(R) Celeron D CPU 2.66GHzMotherboard model: P4M800P7MB-RS2HBIOS Name: Phoenix- Award V6.00 (584F1P12)Memory device: 512M DDR2OS:Windows XP Home+SP2I've got two 512M DDR2 RAM in the memory slots at the moment. I replaced it with two 1Gb DDR2 800's , but it registered only as 1Gb total memory with both cards in position. When I removed one of the 1Gb cards, it registered as only 512Mb memory. I got the same results with the other 1Gb card.According to the motherboard's manual is support up to 2Gb. It also support DDR2 533/400. The shop where I bought the 2Gb's said it will work with the motherboard, but the speed will not be 800mb, but 533mb which is understandable. The PC boot normally and so does everything else, except that the RAM is only 1Gb where it should be 2Gb with the two 1Gb cards.
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