Wow.. I didn't think it was going to be this impressive in regards to perf/w. On the same node, they were able to extract twice more performance using similar power figures. Perhaps they could even release a dual GPU SKU for $699 in the form of GTX 990 (those GTX970 SLi reviews look hella impressive).
Im more interested in the DSR and the other image quality features. The first one sounds really useful for old games or if you have extra GPU power you can use this to enhance the IQ even more so. No more workarounds to achieve this is a bonus. Looking forward to an indepth article on this from Ryan ^^.
P.S - With rumours swirling about the big Maxwell (GM200) being taped out not so long ago from the initial GM204s (being ~620mm^2 i.e. the biggest ever), we could potentially see GTX Titan refresh this fall if yields are good. With this type of results, we could potentially see a product that does push the absolute performance envelope.