Hi, recently I got rid of 2x 512MB modules of RAM from my PC, and replaced them with 2x 1GB modules OCZ Platinum RAM. I now run 2x 1GB OCZ & 2x 512MB Corsair, at 188.8.131.52 timings. I have a problem however, before replacing my old 2x 512MB modules of RAM with the new ones, I had a Vista Score of 5.2 on the RAM. Then I popped in these 2x 1GB sticks, and my Score went from 5.2 to 5.0 with 3GB of RAM. Now my question is, shouldn't the score be higher with more RAM? Also my memory bandwith fell from 6200MB/s to 5900MB/s. I have discovered that when I remove the 2x 512MB modules Corsair, and set the memory Command Rate from 2T to 1T, the Vista Score goes to 5.9 for only 2GB of RAM. Since I cannot run 1T with 4 sticks of RAM, I am forced to use 2T. Anyone have an idea of how I can improve my performance. P.S. The modules are running at around 406-407MHz in Dual Channel.