In one of my boxes I have a GT520. GT610 is a rebranded 520. It can play WoW, League of Legends and Star Wars: The Old Republic on a 1920x1080 display at low-medium and full medium specially on WoW. With an overclock it goes medium and a bit up on all. I don't know what brand you have, but the one I have in that box is Asus ENGT520 ( low profile, passively cooled ) and it overclocks from 810 MHz GPU, 600 MHz memory to 950 GPU 780 memory without any problems or high temps (but that is providing you have a decent case ). Average FPS is around 40 and falls down to 30 when things get complicated.
P.S I have V-Synch turned on and anti-aliasing is always off.