How's this for an overclock (stock cooling)?

http://service.futuremark.com/compare?2k3=968990

I would guess it's not much, but I did that on stock. The processor isn't overclocked, just the video card.

Who makes your Radeon? What brand is the RAM on it and how fast is it?

That overclock seems a bit lower than average.

It's an ATi, never checked the brand of its memory though.

Edit: BTW, I COULD get it quite a bit higher, but then I get a lot of artifacting, at those clock speeds there is no artifacting. I had it up to 360 core stable (did the core first, then did RAM, but with artifacting in 3d Mark '03 games, especially the games that push the video card hard, like the Battle of Proxycon and the Troll house (BTW, is the Battle of Proxycon based on the Doom 3 engine? It seems to look similar to it.) On the less demanding tests it didn't artifact near as much, and I didn't bother trying it in any games. Is it ok if it artifacts some in certain programs, like in 3d mark or other benchmarking programs that really push the card?

I got 5145 on a compaq
Built by ATI 9700 pro
Stock cooling
o/c 351 MHz / 331 MHz stable with no artifacts.

Its a 2.4GHz P4 Ummm Built by compaq

5145 3DMark2K3