It means 1070 would need to be definitely better than R9 290X CF.
first you say I promote Nvidia cards but totally missed the "crossfire/sli"
I wrote...sli see sli included.
I don't care that the 295 beats the 1070 by a few frames when the real deal is, its a stuttering mess compared to a strong single card. You know this and I know you do.
The guy has crossfire and he already knows it.
And yes there is plenty of good games that never get a crossfire/sli profile and many more that run like crap. This whole forum will tell you that and has been saying this for ages.
The rule is when you can get away with single card performance, do it! screw crossfire /sli ..
The 1070 is faster than a titan x/gtx980 so all those all old benchmarks you listed with old games on the old 295 that finally got a crossfire /sli profile and hotfixes to improve scaling after 6 months look pretty good.
but we know the real truth, like I said crossfire and sli sucks.
So stop putting words in the op's mouth ! he said REPLACE his crossfire 290's NOT UPGRADE!
oh yea and lets not forget the virtual inferno of heat those 500 watts of cards give off compared to 150 watts.
How about 8gb 1070 vs 290x 4gb of memory at 4k with the later games out.?