Which games? Again, no one seems to be able to provide any good data to prove this point. If we had a GPU 50% faster than the Titan X, you'd have a point. Here is an excerpt from HardOCP's latest testing of GTA V, a very VRAM demanding game:
"Finally, the single-GPU GeForce GTX TITAN X is of course slower than these other multi-GPU cards."
What about 970 SLI with 3.5GB of VRAM?
"GeForce GTX 970 SLI is also faster than a single GeForce GTX TITAN X, which is interesting."
What about 4K now?
"GeForce GTX 970 SLI is just a bit faster than R9 290 CrossFire,
and both are faster than a single GTX TITAN X. The R9 295X2 seems to do very well at 4K when advanced options are turned off."
Conclusion:
"....Even the brand new GeForce GTX TITAN X is
not able to play this game at the highest settings at 1440p.
There is basically no single-GPU video card on the planet at this point in time that can play this game at the highest in-game settings. It will take a future generation GPU to maximize this game at the highest settings.
We found that the lowest configuration you can get away with in order to play the game
"maxed out" at 1440p is going to be GeForce GTX 970 SLI. This will allow you to turn on every single graphics feature at 1440p. Even though GTX 970 has its VRAM limitations, those aren't a problem at 1440p. The game is still smooth and playable on GeForce GTX 970 SLI at 1440p."
What about 4K?
"GeForce GTX TITAN X SLI is just one setting away from the highest settings in-game at 4K. It goes to show you though,
even with GeForce GTX TITAN X SLI 4K still cannot be maximized, again we will need faster video cards to truly make it shine.
To completely max out GTA V you'll need three TITAN X cards."
http://www.hardocp.com/article/2015...igpu_performance_review_part_2/7#.VU258vmqpBc
So the hard reality:
1. If you are only buying 1 card and 1 card only in the realm of Titan X performance or slower, 8-12GB of VRAM is way too much for such a slow product. This may change in the future but for today's games, this is how it is.
2. What allows Titan X SLI to beat 980 SLI isn't VRAM but more GPU processing power. Titan X is just 33-35% faster than a 980 per HardOCP but has 3X the VRAM - waste.
"If you are playing at 4K and want the best setup for 4K with money as a consideration it definitely falls on the GeForce GTX 980 SLI as your best option."
I would personally MUCH rather take a $400-450 GM200/R9 390 4GB with 85% of the Titan X rather than a $700 R9 390X 8GB with 100% of the performance of the Titan X. 4GB if plenty for 1440P and below and in 2 years, just dump these cards, save $200-300 PER card in CF/SLI and get something much faster.
Put it this way, GTX480/580 SLI did not outlast 470/570 SLI because of VRAM and the same is true for single cards. You are generally better off getting 2nd tier cards, saving a butt-load of cash and upgrading sooner.
Don't forget, massive CPU bottlenecks when going with 390X CF/Titan X SLI in some games, such as GTA V!
"The GTX TITAN X is a very powerful video card, and two of these in SLI is a lot of GPU potential. However, running that much GPU performance at a low resolution like 1440p could create a very CPU dependent scenario, and thus would bottleneck TITAN X SLI performance at 1440p.
It is possible both of these theories are in play, and result in the fact that TITAN X SLI just isn't any faster than GTX 980 SLI at 1440p. Given that information, spending $2000 on TITAN X SLI if you are running at 1440p in this game is a waste of money. GeForce GTX 980 SLI is the best solution at 1440p and allows you to play at the highest possible in-game settings."
http://www.hardocp.com/article/2015...igpu_performance_review_part_2/2#.VU27lvmqpBc
Knowning all this, sub-$900 R9 390 4GB CF would be a smoking hot deal against a single Titan X. For other gamers who really want 3+ years of future proofness and don't mind spending $1400-2000 for a pair of high-end cards, GM200 6GB SLI and Titan Xs will be more fitting. As it stands, there is no way a card priced at $450 with 85-90% of the Titan X's performance with 4GB of VRAM is a failure for 1080P-1440P users.
Let's wait to see prices and performance first. I would never pay $250-300 more for a card 10% faster just because it has 6-8GB of VRAM. GPUs become outdated and drop in value so fast, and knowing that this generation is a 100% stop-gap, why spend hundreds of dollars more knowing a $500 Pascal/16nm Arctic Islands will smash a 390X in 18 months? NV can price GM200 6GB at $699 if it wants to. Those 2nd tier AMD cards have been hands down the best value for high-end gaming for 5 consecutive generations (HD4870, 5850, 6950, 7950 and R9 290). If some gamers want to spend $200-300 more for each GM200 card to future-proof, they can knock themselves out. If R9 390 non-X has 4GB of VRAM but it beats 980 by even 15% and costs $449, it will be amazing. The affluent PC gamers buying $1K 4K monitors and not caring if a GPU costs $500 or $700-1000 and are planning on getting 2 high-end cards, well they can go right ahead and get Titan X/GM200s. For 1080P and even 1440P gamers, there is no need to waste money on wasteful amounts of VRAM knowing this gen is a stop-gap.
While there is no doubt that 680 2GB SLI and 770 2GB SLI setups do not fair well today, I stood firm on my recommendations when Kepler came out and recommended 670 SLI (as an example), and advised that it's way better to skip 680 4GB and 770 4GB, and just resell those 670s and upgrade with the $ saved from not wasting it on 680 4GB or 770 4GB cards. Think about it, $200-300 saved per GPU is $400-600 put aside towards 14nm/16nm GPUs that will literally blow the doors off today's cards. I mean who keeps $700-1400+ cards that they actually paid for for 5 years today knowing how the PC market works? The best way to future proof is to not overspend today and upgrade more often with the $ saved from not spending hundreds and hundreds of dollars extra on that last 15% performance gain and extra VRAM that "might get utilized".
As a reminder, just look at what happened to GTX780 6GB, the original Titan 6GB or the R9 290X 8GB. All waste of $ vs. a strategy of getting something fast enough and just upgrading again in 2 years. That's why it's still better today to buy GTX970 SLI for 1440P and below than 980 SLI and just dump those 970s in 2 years, saving yourself $500 in the process towards the next upgrade.