I got a PNY GeFoce4 MX 420 (PCI not AGP) from Buy.com, and its smooth as silk.
And thats with all the settings in the game set to medium (I tried it on high, and I got a little bit of choppiness, so now I'm somewhere in between).
I have 512MB ram and a PIII 866.
Maybe it just seems so smooth in comparison to my old ATI radeon 7000.
I'm pretty happy with it though.
Is the 440 better than the 420?
Z~