I know my graphics card is old but it runs FO3 like butter. This game how ever runs like crap I am getting low fps and shudders. I have a ATI 5850 coming tomorrow I sure hope the game runs a lot better with the 5850 or I am just not going to play it and never buy the dlc when it comes out! I can not even believe that its the same graphics engine as FO3! Obsidian messed something up!

Try turning the steam community off for the game (right click in steam library, look in properties). Worth a shot.

Also try turning down water settings (only)... someone else got an unexpected performance gain doing this.

I have a Nvidea GTS 250 and i have no issue.......... played for around 2 hour with no problem whatsoever.

Besides the obvious like defraging and disabling your virus scanner and other memory resident apps, I'd max your system on ram, DDR2 is cheap these days, maybe your MB supports 8-12GB. If you are running everything off of 1 hdd I'd buy a 2nd faster hdd and balance some i/o across them, maybe put your swap file, prefetch/readyboost onto the second one (use NTFS symlinks) or move steam/your game to the new drive. If your motherboard supports crossfire consider dropping a 2nd 5850 in it because that card is good in xfire.

Not to be rude but my graphics card is twice as fast as yours, I can't see how your not having issues!

What actual driver version are you running?

Try the beta drivers (260.98 I think)

threatening to never do business with them again is the oldest trick in the book, be more creative

GTX285 and the game runs great here. Seems improved over f3 that I can tell far as performance, least on my system.

197.47 drivers . 2core intel cpu, win7 64.

Shrug. Try using the older nvidia drivers maybe? I avoided the latest and 'greatest' for a reason.

No video game uses more then 4gb of ram so if I put in 8gb of ram 4gb would be wasted!

I am using the latest drivers, I should download the older drivers and see if they work.

Initial problems with new games versus Geforce drivers has been common for about three years now, so yes, swapping drivers is almost always a potential fix.

Meanwhile, the GTX275 doesn't meet my own definition of "Old" at all. It's less than two years (although the 260 and 280 are now over two years old, I believe).