Think I will stick to my 5970
Really?
Apart from a 5970 being 1 card instead of 2, it still has internal CF, and from a 580 not having scaling issues to worry about because it's the most powerful single GPU card to date, let's see W1zzard's findings @ 2560x1600, shall we:
In AvP, 6950 CF has 48.5% over 5970 and 71.9% over 580
In Bad Company 2, 6950 CF has 24.8% over 5970 and 62.9% over 580
In Battleforge, 6950 CF has 10% over 5970 and 15% over 580
In Call of Duty 4, 6950 CF has 3.6% over 5970 and 56.3% over 580
In Call of Juarez 2, 6950 CF has 20.8% over 5970 and
-30.7% over 580
In Crysis, 6950 CF has 36.9% over 5970 and 77.6% over 580
In Dawn of War 2, 6950 CF has 22.3% over 5970 and 75.1% over 580
In Far Cry 2, 6950 CF has 45.4% over 5970 and 36.9% over 580
In HAWX, 6950 CF has 43.6% over 5970 and 33.2% over 580
In Metro 2033, 6950 CF has 35.1% over 5970 and 32.3% over 580
In Riddick: Dark Athena, 6950 CF has 21.1% over 5970 and 51.6% over 580
In STALKER - Clear Sky, 6950 CF has 37% over 5970 and 42.3% over 580
In Supreme Commander 2, 6950 CF has 2.2% over 5970 and 9.6% over 580
In Unreal Tournament 3, 6950 CF has 13.8% over 5970 and 47% over 580
In 3DMark 03, 6950 CF has 21.8% over 5970 and 84.3% over 580
In 3DMark 05, 6950 CF has 6.2% over 5970 and 7.7% over 580
In 3DMark 06, 6950 CF has 5.4% over 5970 and 19.1% over 580
In Unigine Heaven 2.0, 6950 CF has 96.8% over 5970 and 77.9% over 580
6950 CF is $600: that's 3.4% more then a 5970 and 20% more then a 580 but how much better then a 5970 and 580 is it? Shall we add up?
Not counting the 3DMark benches AND Unigine bench: 6950 CF has 26.1% over 5970 and 41.5% over 580
Not counting 3DMark benches only: 6950 CF has 38.8% over 5970 and 43.9% over 580
Counting everything: 6950 CF has 27.5% over 5970 and 42.8% over 580
That's 27.5% more power costing 3.4% more or 42.8% more power costing 20% more: does that sound bad to you? To put it into perspective, 6970 costs 23.3% more then 6950 and only brings ~12% better performance then 6950.
Unless i made some mistake, i didn't arrive @ the same conclusion as W1zzard:
Can't do the same for 6970 CF because W1zzard hasn't put it up yet and i'm almost sure the relative gains it has over 5970 and 580 won't be as good as 6950 CF because it costs much more and that little detail will skew everything off 6970 CF (guessing, for now).
This comparison is only for 2560x1600: for other resolutions 6950 CF will NOT be as good.