Who's buying 1080's these days though? The market for 1070's is great, everyone who pay for higher kit goes for the 1080ti - the 1080 is pointless surely - so the Vega being at 1070 levels is great but why bother hitting the 1080 level unless you're a LOT cheaper?
I won't buy a 1080. Not for the prices they are demanding for them. I can get a Ti for about £50 more.
I've never really wanted a 1080 and have never really considered one because I have two "1070 like" cards already (Fury X, Titan X(M))
As such it would be pointless to spend that sort of money on 20% or so. I would want at least Ti performance for spending out that kind of dough.
Vega needs to cost less than the 1080. And less enough for people to want to put up with the thermals and 100w extra power consumption. This isn't like the 1080, which you can pair up with a 450w PSU you are going to need quite a bit more juice.
So given that it's a bit impractical it needs to be cheaper. Yet, the Fury X was not cheaper than the 980Ti despite being crap at low resolutions, 2GB VRAM down on the Ti and you had to fit a radiator to your rig.
Now if AMD had got the Fury (non X) price right? then yeah, that would have been a popular card. But they didn't. And this is all because of a large die and HBM.
So I just can't see how they can undercut the 1080 enough to make this card viable.
AMD cards are for enthusiasts. The same as their CPUs. IE - those who don't want bleeding edge performance but want great value. We've seen it with Ryzen. Those who couldn't give a crap about money are all lining up to buy X299, those with some sense and those who need to be careful are buying Ryzen.
However, if the Vega does not have great VFM then who in their right mind is going to buy it?
I'll tell you. Some one like me, who wanted to punish Nvidia for making me feel like a muppet for buying two Titan Blacks. Some one who would not buy Nvidia no matter how cheap or good they were. So I bought a Fury X instead. Year later I ended up going back to Nvidia (Titan XM) because I was running out of VRAM and games were crashing, BSODing and rebooting my PC.
AMD have fixed that now, but it comes at a massive performance penalty. So whenever I want raw speed I use my 5820k and Titan XM. Whenever I do anything else? low clocked Xeon with Fury X all water cooled practically silent.