Some questions on SuperPi

[SPQQKY]

I guess my only question is why such little difference between:

277 x 10 1:1 DDR540 2-2-2-6 1T (http://img.photobucket.com/albums/v86/SPQQKY/pi5.jpg)

VS

308 x 9 166 Divider DDR504 2-2-2-6 1T (http://img.photobucket.com/albums/v86/SPQQKY/pi4.jpg)

I would have thought with the RAM at 277MHz 2-2-2-6 1T, I would have much better SuperPi time seeing as how the overall CPU speed is the same as 308 x 9 with the RAM at 252MHz 2-2-2-6 1T using the divider.

One other thing, this was using WinXP which isn't the best for SuperPi, I also have Win2k and Win2003 Server, which would be best to use to acheive best overall SuperPi 1m time?

[Gautam]

Seems like your scores need work in general...I'd imagine some timings are effectively bottlenecking your scores. Got an A64 tweaker shot? My guess is once you shave the timings down fully, the higher speed will be able to stretch its legs fully and pull somewhere around half a second ahead of the lower one.

I personally prefer Win2k, but the rest of the internet says 2k3 is the way to go, so might as well.