ZOTAC NITRO VGA Overclocking Controller Review
 

When it comes to overclocking your system, the video card tends to be
the easiest component to tinker with. To overclock your CPU, you need
to take into account the litany of components such an operation would
affect. With a video card, as long as you have the right software it
can be as easy as just incrementally bumping up the core and memory
speed until the card reaches it’s limits of error-free functionality.
This normally requires you to close whatever application you may be
running in order to launch a separate program for this tweaking. ZOTAC
has done away with this step with their NITRO VGA Overclocking
Controller.

http://www.futurelooks.com/zotac-nit...roller-review/