Well, I am still working with it, but the HTTxLTD or LDT = 800 by default, and everyone here says it should be 1000. So I went through 1x, 2x, 3x, 4x, and 5x and my 3DMark CPU scores went up as the LDT did. But then I got my new heatsink yesterday (I had a really crappy one before- 45C, this one keeps it at 35C) so I ran 3DMark with the LDT at 5x. But now I got the same score as I did with the 4x last time. I don't know why.