Now with a minor pencil-mod Ive got the core running at 610Mhz with a 1450MHz memory speed.
Review is coming soon but I'm now including how to do the pencil mod as well.
EDIT: now upto 635/1450 but peaking at 74c under artefact testing which is about as high as I want to go, I would buy higher-rated cooling but the thing with this card is that it is not expensive enought to warrant it, by this I meant that for £40 more (the cost af a very nice cooler/water attachment) you can buy a card that will clock higher anyway (the 7900GTO) and has 24 pipelines.
around the 9k mark in 3dmark05 as well BTW