I recently bought this RAM and have it running on 2.2V at 5-5-5-15 according to my motherboard. The spec says it should run at 1066MHz on 2.2V however when i use 3DMark to view my system info, it says the RAM is only running at 667MHz.
Am I missing something?
Am I missing something?

As i'm sure you've gathered i'm not the most educated of overclockers so would really appreciate the help, but am i'm likely to see any gains? Is it worth it for the extra 0.3Ghz and 1066MHz??