Decent, cheap upgrade from Nvidia G100?

[B00tDisk]

Looking for a video card with a bit more oomph to it.

My current card is an Nvidia G100. Whats a reasonably cheap card that would be a decent upgrade from that?

Looking for Nvidia only.

One gigabyte Geforce 200 series cards at Newegg.

These start at $40.  Half that if you wanna go with a 512mb card instead.