compatible graphics card for my compaq presario sr1630nx

im going to school right now and im taking a 3d animation class and i finally got the program ive been using in class which is "Maya" it runs good on my compaq presario sr1630nx but it seems to be choppy at times with a little lag my instructor says to get a graphics card. so i was wondering what would be a great graphics card thats compatible with my system for 3d animation and some pc games. right now the graphics card my system is running is a ATI Radeon Xpress 200 i would also like to have two monitors running on my system so i could have maya on one screen and a picture reference on the second screen.

HP doesn't list what it has for a power supply here,

Compaq Presario SR1630NX Desktop PC Product Specifications - HP Customer Care (United States - English)

but going on how HP likes to put in a power supply that is just powerful enough to run the system as it is out of the box, I'm guessing that it will be something in the 250-300W range. If that is what it is (only way to find out is pop the side off and see what it shows on the label), then a new power supply is also going to be needed.

With that in mind, how much are you looking to spend?

i currently have this model running my power an ATX-300-12Z Rev:.BD 300W as for how much im willing to spend between 200 and 350 dollars

so im guessing a quadro would fit the PCI-Express space in my system so what about those geforce cards

im from California

those are cool combos hey here some of the system requirements to run the program good