I have not read everything in this thread so I really don't know who he is referring to, sorry. If you guys were specifically talking to each other then allow me to butt out of the crossfire, now.
🙂
Roughly meaning within 10% of the price of the 7770. Drivers are new and maybe the 650 will improve over time with better drivers, but as it stands it just does not look competitive with 7770s that cost about the same or a little more. I know a thing or two about 7770s having owned one myself, and you can find them on sale for ~$99 occasionally. Even right now you can find them for ~$110 after rebate, same as the $110 650s. And the 7770 is substantially faster than the 650; the 650 is not just "a bit" slower, particularly at the kinds of framerates you will likely see with these lower-end parts where a 25% fps difference may translate to 24 fps (barely playable) vs 30fps (significantly better).
http://www.tomshardware.com/reviews/geforce-gtx-660-geforce-gtx-650-benchmark,3297-24.html
What I'm curious about is typical oc headroom, because a 7750 can overclock well, and the 650 may not keep up if its oc headroom is worse. We will have to wait till more oc reviews come out to figure out typical 650 oc headroom, I guess.
As you said, though, the market is dynamic and prices will fluctuate. So I am limiting my comment about 650 price/perf solely to today's street prices at major retailers.