g620 will, but in cpu heavy games, like you will get fps down spikes as low as 20 in codbo at max settings but normally between 30-40 and above 40 with some lower settings.,
no lagging in burnout paradise city, codmw2, codmw3.,
little lagging (down to 30fps in city) in just cause 2 at high settings.
Down to 15fps sometime in gta4 v1.0.0 and normaly around 40, as it uses around 50 threads.