Maybe, but hot, power hungry & throttling applies to all resolutions.
4GB won't matter to the vast majority of gamers. Particularly those on 1080p (where a Titan X is still barely enough in newer titles, re: Witcher 3) and 1440p.
Honestly I have my doubts it will hold up well at 4K, but they can prove me wrong when it comes to launch reviews. I want to be proven wrong, I want a fast single GPU.
Unless you plan on getting dual 390s/390Xs or dual GM200 cards, 4K is too demanding for cards like the Titan X. A fast single GPU for 4K gaming this generation is an oxymoron. It doesn't exist until R9 395X2/Titan Z2 come out. A gamer's only option is to turn down settings/details which then becomes a discussion of what's better 1440P fully maxed out or 4K at Medium? I am not sure as no professional reviewer has done the comparison with pictures.
I think if you want 4K experience that's definitively better than 1440P, you
need 2 flagship cards. 4GB vs. 6-12GB at 4K should only come into play if you are using 2 or more such cards. If you are buying a single card for 1080P-1440P, it's not an issue while no single-chip card is fast enough at 4K today to take advantage of the extra VRAM since it's GPU bottlenecked to start with.
I think you know all of this though! A single R9 390X or a Titan X isn't fast enough for 4K to achieve 50-60 fps consistently at High/VH settings in AAA games.
Fiji XT will be dismissed outright due to 4Gb by too many people. Go read the forums like NeoGaf. Legions of 680 or 670 2Gb users who passed on 3gb 7950 or 7970 are now laughing at 4Gb Fiji Xt because of the ram and with no regard for anything else.
NeoGaf --> even if R9 390X matched the Titan X for $399, they would buy NV. Too many gamers on that site/forum are too NV biased to take seriously.
I am interested to see what the price/performance of the 2nd tier Fiji card is as historically HD5850-R9 290 tier has been BY FAR the best buy from AMD on the high end. This time it might be different if R9 390
X sweetens the deal with warrantied AIO CLC. I still think the 3584-3840 Shader Fiji PRO at $499-549 has a shot at making
major waves. If Fiji PRO is 10-15% faster than a 980 and it costs LESS than $499, it's going to steal the spot light for many gamers who don't care to pay $700-1000 for that last 15%.
If Fiji PRO is 15% faster than 980, but comes with 4GB of VRAM, for example, what would I take Fiji PROs in CF for $999 or a Titan X? Fiji PROs.
If $499 Fiji PRO is 90% as fast as a $699 Fiji XT, what would I take? Fiji PRO.
A lot of gamers will realize this generation is a stop-gap and evaluate how much to spend this round more wisely I feel. Then again, many people bought 980 over 970 SLI, which was a bad move as 970 SLI is superior in all resolutions (for those who can fit 970 SLI into their case of course).
I think a big majority will buy Nvidia cards over AMD cards if priced the same and same performance.
You have it wrong. Majority will buy an NV card even if it's priced higher and performs worse.
The 290x tied Geforce Titan at release and there wasn't a massive outcry of "wow."
That's because the media reviewed the cards that way. Had the media reviewed after-market cards, there would be a HUGE wow factor when a $399 R9 290 = Titan. If the media starts ripping apart 4GB and benches games at 8xMSAA at 4K to show the bottleneck, that will be the result. However, the media did no such thing with 970 SLI or 980 SLI. In fact, sites like PCPerspective and TechReport and TPU think 3.5GB on 970 is perfectly fine. Many gamers bought 970 SLI / 980 SLI for the last 8 months. Are all those setups instantly obsolete now if R9 390X launches with only 4GB of VRAM? That's really the hypocrisy here because 980 4GB SLI > Titan X in 90% of benchmarks.
Who thinks R9 390X will be faster than 980 SLI? I don't. 980 SLI isn't bottlenecked by 4GB of VRAM, so why would a single 390X be? The Titan X isn't fast enough for 4K anyway which means unless you get 2+ of those, the extra VRAM for gaming is a marketing point right now. All of this could change if we get AAA games that truly require > 4GB of VRAM.