According to this page
your card belong to the NVC0 family with the code name NVC3 (GF106).
If you want to use the "nouveau" open source driver take in account this warning, quoted from the same page:
These cards are generally working with the latest kernel and Mesa but may still have power management issues. It is recommended to use the Linux 3.1 kernel or newer (or a backported driver from this kernel).
This means that you should use a fairly recent distribution or upgrade the kernel and possibly some parts of the X stack, including probably libdrm and xf86-video-nouveau.
In the mean time there is a closed-source driver provided by nVidia which is supposed to work for your card, see that page
, look in the GeForce 400 Series, driver version is 295.59 (choose the 32 bit or 64 bit fitting your ARCH).
So my best advise would be to try this one, still with a fairly recent kernel (on my Slackware-current I installed linux 3.4.x with no hassle).
If you want to try the nouveau driver I can help you a little more provided you choose to install Slackware. But for now using the driver provided by nVidia is certainly easier.