Yes. I am expecting it to rival Titan X, that means ~35% above 980 already. With some OC headroom, its potentially a 4K capable single GPU. But with 4GB vram it's not. Never will be. This is worse if it ends up faster than Titan X.
All that grunt is wasted if its vram limited, so it may as well not have the extra grunt.
Also, its direct competitor is going to be the 6gb GM200 SKU, not Titan X, not 980.
Hard data disproves your viewpoint:
1. Titan X OC is nowhere close to fast enough for 4K and it gets beaten by 980 SLi. Today we need 2x Titan X performance for good 4K gaming experience.
You already read this review:
http://gamegpu.ru/test-video-cards/titan-x-v-4k-test-gpu.html
That means even if a single R9 390X OC = R9 295X2, it wouldn't be good enough for 4K.
2. VRAM usage is a very tricky thing. Lots of Titan X owners claim to be using well above 4GB of VRAM and then they'll incorrectly correlate this to the game requiring 4GB of VRAM. This is absolutely false. Just because MSI AB shows > 4GB of VRAM usage, doesn't mean the game requires it to run well. Modern game engines are very good with using VRAM dynamically.
OR GTA V dynamic VRAM usage going close to 6GB on Titan X even though it's slower than R9 295X2 4GB.
To get playable settings, the Titan X OC needs to lay off MSAA and at 4K or DSR/SSAA at 1440P. R9 390X OC on its own won't be fast enough to benefit from 4GB of VRAM because the GPU is not fast enough. 20-30% faster over 980 is not a lot for 4K gaming because in situations where the game actually
requires > 4GB of VRAM, 390X OC would be a slideshow fest.
Not true at all. Performance sells. When a product is a performance leader, the topics surrounding that product will tend to focus on the performance leadership and away from the drawbacks that come with it. We can't focus on the 290X 20% performance leadership because there is none, and all that is left to talk about are the drawbacks and pricing.
It is true. Performance doesn't sell when it comes to AMD if the image is tarnished. R9 295X2 cost $600.
http://www.sweclockers.com/recension/20216-nvidia-geforce-gtx-titan-x-i-sli/16#pagehead
When CF works, R9 295X2 is on average 42% and 67% faster than the 980 at 1440P and 4K, respectively.
When CF doesn't work, R9 295X2 = 290X and we get 90% and 94% of the performance of a 980 at 1440P and 4K, respectively.
This makes it a no brainer to go R9 295X against a single 980 if the #1 priority is performance. Yet, the market doesn't care which means the tarnished image of R9 200 series means even if R9 295X2 was
$400, 980 would outsell it.
Similarly, HD7970Ghz beat 680 on day 1 of release across almost all major sites yet 680 outsold it by miles. I clearly remember how 1Ghz 7970 Gigabyte Windfroce 3X cards cost $400 on Newegg for months, similar to a $380-400 670 and the AMD versions were not only 15-20% faster than a 670 but had more VRAM too. 670 still outsold 7970 cards. Pretty much the same story with $400 R9 290 vs. $500 780 or $300 R9 280X vs. $380-450 770 2-4GB.
Since R9 200's image is tarnished, R9 290X could cost $199 and 960 would outsell it, guaranteed. Today, Newegg sells R9 290 PowerColor for $220. So far there are only
4 user reviews on that card. That means a card 50-60% faster than a 960 for barely more $ can't even sell. When it comes to AMD cards today, performance isn't enough to sell them anymore if the reviewers crapped all over the cards and refuse to acknowledge the existing of cool and quiet after-market versions.