Distinguishable from the GTX480 by the shorter PCB and different fan cutout,
among other things.
http://pics.computerbase.de/2/8/7/0/4/2.jpg

Has anyone done a 2010.0 64 bit install with a GT-220 video card
installed? If so can you post what driver you selected during the
installation? The install is suggesting "Geforce 6100 and later" but
thats not working, the "test" video option fails with an error

Article is Dutch, but the large pictures are universal.
http://tweakers.net/nieuws/65933/cebit-nvidia-gtx-480-op-de-gevoelige-plaat-geva
ngen.html
SemiAccurate has some more technical details:
http://www.semiaccurate.com/2010/03/02/fermi-strips-secret-location/

Many Linux GL-based games set video modes that my monitor can't
handle. I can temporarily work around that by deleting all
Meta-Modes from the X-Display Configuration, and putting
some manually chosen modes into the list.