They probably have something secret to counter intel in the 1k range. Probably 128 cores spread across a square-foot of silicon. Enough output that you can boil your coffee while gaming.
If you're basing that comment on TDP, think again.
NVIDIA redefined TDP to their convenience, to mean something more like "averages". So their numbers can't be compared directly.
Always look at third party measurements. I'm looking forward to Navi's, while on the topic, as they've announced large improvements in power efficiency.
In response to what you said about Navi, I'm also excited about that. I'd really love to see some really strong competition to Nvidia's offerings that might be able to give them a good fight.
Their dominance and tendency to push for proprietary features seems quite bad for the industry as a whole.
Yeah, I know. AMD GPUs also run a lot cooler as of the last time I checked. They've made a lot of progress, although the jokes from the R9 2xx-3xx era of a few years ago are still tempting.