A pre-overclocked card with a 10% core overclock was tested and its barely faster than a GTX760 but consumes 40W less at the wall:
http://videocardz.com/54401/nvidia-l...eforce-gtx-960
New 8600GTS incoming??
With the overpriced R9 285 it appears the sub £200 market is stagnating.
Edit!!
Some overclocked results from another site.
http://cdn3.wccftech.com/wp-content/...GTX-960-OC.jpg
The GTX660 results need to be taken with a pinch of salt as the GTX660 had artificially low power limits, which meant overclocking gained not much in performance unless you used something like Kepler Golden Bios.