Sorry, havn't checked this thread for a while - many thanks for all replies. I went for the Gigabyte Silent Pipe (no noisy fan) GT7600 card and am well impressed. I'm running at 1280 res and having smoke on no longer brings the frame rate down to an un-usable level (except hovering a helicopter up to the point of smoke saturation but I can live with that)

Happy flying

Busta