1) Driver optimizations will apply to new NV cards too; so an irrelevant point. 20% is not enough to provide more playability over GTX580 in demanding games. Go ahead, check any review with modern games at 2560x1600. HD7970 is still not fast enough. Yet, it's way too fast at 1080P, wasting its potential at resolution where HD6950/GTX570 is already fast enough.
2) Ya, but that entire market is very very small. The majority of users do not care for these things. They want faster cards at <$300 and so far AMD has not delivered at all in that regard over HD6950/6970/GTX560Ti/570.
3) What are you on about? HD7950 is 20% faster than HD6970 but HD6970 cost $369 not $450. Also, HD6950 was unlockable essentially giving us HD6970 level of performance for $250 or less. So what you are saying is let's ask $450 ($200 or 80% higher price) for just 20% more performance. Right....that's not at all like getting 20% better performance at "similar price". The only card that was similarly priced to HD7950 was GTX580. HD7950 is only 5% faster for $50 less. Alternatively, overclocked GTX570s were $370 with ~ GTX580 level of performance 12 months ago.
4) Doesn't make any sense. HD7950 and HD7970 are not fast enough for 2560x1600 gaming in the demanding modern games where HD6970 and GTX580 struggled in the first place (Metro 2033, DA2, Witcher 2, etc.). A single HD7970 is also not fast enough for 3x 1080 Eyefinity gaming (
http://www.bit-tech.net/h...deon-hd-7950-3gb-review/4). Therefore, you'd need 2 of those, which means $900+ on GPUs, at minimum. Who spends $900 on GPUs without seeing what the competitor brings at the very beginning of the new 28nm generation?
5) It's not always the case. Last 40nm generation lasted from September of 2009 when HD5870 came out to January 2012 when HD7900 28nm came out. That means for the next 1.5 years or so, we are entering the 28nm-generation. AMD just showed their hand and it only delivered 20% more performance than NV's best card on 40nm. That means there is a huge possibility for a price war or for NV to deliver a much faster card at 28nm since AMD was very conservative with factory clocks. Normally, a generation jump (i.e., 9700Pro --> X800XT --> X1800XT, HD3870 --> HD4870 --> HD5870 brings a massive performance increase). In this case, it didn't happen (not without 30% overclocks on the HD7970).
6) Why would NV be "green with envy" when they had 300 notebook wins with Kepler, more than they ever had with Fermi? That sounds like they are doing much better already. Since AMD has not brought anything to the table in regard to 28nm HD7000 GPUs on the notebook segment, why would NV be "green with envy"?
We'll see how 2012 plays out. I remember when NV launched GTX280 for $650. Shortly, AMD responded with HD4870 for $299. I can't afford to drop $600 on a GPU and not care if the competitor brings a $299-349 card that's only 20% slower OR if the competitor's $550 GPU is 50% faster than GTX580, which by all rumors is actually very very likely.
By all means if you can upgrade every 6 months, go ahead and grab the HD7970.