I’m currently using a Nvidia 8600GT on a 3GB Quad rig, it was the best when i bought it, but it has since become outdated and i believe there are far better to be had on the market now.
Chris – I’m achieving around 20FPS with High settings (excl. autogen & Traffic) and i think removing these things actually makes the sim look more realistic, aswell as improving your frames. Yours is a better setup than mine, so you should achieve at least this.
Without going too far off topic, if you are planning to fly online, may give LinkUK VA (Virtual Airline) a sneaky plug…we have 24/7 sessions on an excellent platform and have a great community.
Happy Flying.
-James