I recently performed a memory upgrade from 128MB to 512MB. I would still like to use my old memory module, so I want to ask this question: The Kingston 512MB Module I have has 3 Memory Speeds: 200, 166, and 133 mHz. My old Samsung 128MB module had memory speeds of 200 and 166mHZ. They both have the same latency timings at the 200 and 166mHZ speeds. Using this info, would it be a good idea to install the older module alongside the new one?