I like the card. I didn't get it to be ultra fast. It is much faster than my old system. I was looking for a value in a card and dual head was also affordable. The faster memory should give you better performance when you overclock the board. You can play with overclocking if you like. My board performs fine, I don't play games, so it isn't that important to me as yet.
Leadtek support told me to use:
This is the link for driver 6.49 see if this helps. also make sure you have
AGP fastwrite is disabled.
ftp://ftp1.leadtek.com/usa/nvidia/649-w9x.zip
As you can see the solution is not all that confident.
I haven't had time to install the new driver yet.
Also the HP C-1097 I'm using may need a little more modification to accept the video siginal. Also if I reboot Windows seems to for get which monitor is connected and reverts to a monitor that doesn't accept the correct signal. But this is not directly related to the dual head problem.