I have a Lenovo 3000 K100. It had 3 DDR2 - 1GB memory sticks from the factory which were PC2-5300 sticks. The mother board has 4 slots and I put in 4 - 2GB sticks which a friend had available. They are PC2-6400. When I run the Crucial scanner I see that they are recognized. My computer seems to be running fine and faster. Should I expect any problems? I did notice that one of the sticks is rated at 800Mhz rather than the 666 or 667 of the specs which are called for. I also noticed that when I run Task Manager it shows that my physical memory is only 3061 MB. Any good advice will be appreciated.
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