Has anyone done any speed test to see how fast the new WordPress 3 2010 theme loads, as compared to other themes?

The speed test that I have used show that my blog takes like 8 seconds to load - which is too slow. I'am thinking about editing the 2010 theme and using it, but I do not want to put a lot of work into it if its not going to improve the load times.

I like light themes that do not use a lot of images. 1 problem with the 2010 theme - it has a huge header banner. So the banner would have to be the first thing to be edited or removed.

But after the header banner, the 2010 theme seems to be pretty light.