If you are after a low-end graphics card for use on Linux, up for review today is the Zotac GeForce GT 610 Synergy 1GB graphics card that sells for less than $50 USD. The results in this Linux hardware review compare the GT 610 to a range of other AMD Radeon and NVIDIA GeForce graphics cards using the proprietary drivers under Ubuntu Linux. Even if you're not interested in the GT 610, this article makes for a nice 12-way Linux graphics card comparison with the very latest AMD/NVIDIA GPU drivers.
The GeForce GT 610 isn't a new low-end Kepler design but rather it's a re-branded GeForce GT 520 (Fermi), so there isn't too much new to share and already on Phoronix was a NVIDIA GeForce GT 520 Linux review from 2011. The Zotac GF119-based graphics card had a core clock frequency of 810MHz and 1066MHz of 1GB GDDR3 video memory.
The Zotac GT 610 Synergy graphics card had one dual-link DVI connector, HDMI, and analog VGA. This graphics card is a low-profile card and included with the product were low-profile back-plates if installing this graphics card inside a smaller chassis.
Cooling the graphics card is a small heatsink/fan that was quiet during operation and did a reasonable job cooling the low-end NVIDIA GPU. The retail price on this Zotac GeForce GT 610 Synergy (ZT-60602-10L) graphics card at the time of publishing is $46 USD at Amazon.com.