A few days ago I added a Radeon 4870 to my rig (thanks to everyone for the suggestions!) and now that I have some free time, I have been tinkering with my software settings to make sure everything is up to speed.
However, after installing and running CPU-Z I noticed something that seemed odd:
I have 4GB of G.Skill PC2-6400 installed. As you can see, the frequency listed for my RAM fluctuates a little below 400 mhz, instead of the 800 mhz I was expecting. While I have built many computers in the past (at least 10), I am pretty green when it comes to optimizing hardware after installing it, so maybe I missed something or don't quite understand what I am reading in that number. Should DDR2 800Mhz be reading as ~400Mhz DRAM frequency?
Here are my MB stats for reference: