I have a PC with 2x256 ddr in a dual channel setup. I'd like to add more but can't afford to buy more right now. I have another PC with a single stick of 512. Can I mix a 512 and a 256 in the dual ...

Diagnosing a PC performance issue can be tricky, especially if you suspect memory is involved. Chances are, you've heard the advice of "just add more RAM", which is a blanket fix that's as old as PC ...

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