I'm using RadClocker, which seems to suit me fine. It give me the overclocking options, and that's about it. Which is exactly what I was looking for.
The only thing I don't like about it, is that you can only adjust the speeds in 7mhz increments. Not a big deal to me, as I'm not looking to squeeze EVERY LAST MHZ out of it. (Every last seven mhz, is good enough. 😉 )
The best I did with zero artifacts is 384/337. I end up with 5087 in 3dMark2003.
Time to play some real games now, and see how well she flies!