when you apply for a car loan, The 3.5 + 0.5 GB thing was never an issue ... it's been debunked dozens of times. In every single instance you can **create** an issue, the same thing happens on the 980 which in and of itself debunks the claim. I always like to say that no one is ever wring, some folks are just misinformed and that's the case here. The No. 1 reason folks were convinced there was a problem is because they's run a card with mor VRAM and their utility reported that it was 'using" more than 3.5 GB of RAM. The problem is no utility exists that reports actual VRAM usage. It reports VRAM allocation. As an aanalogy, if you have a credit card with $500 on the card against your $5,000 limit, what gets reported to the bank as your liability.... $5,000. Same thing, it doesn't report the amount of VRAM being used, it reports the amount that was allocated to the game during the install process based upon the amount of VRAM on the card. Simply put, your chosen utility is misinforming you.
https://www.extremetech.com/gaming/...y-x-faces-off-with-nvidias-gtx-980-ti-titan-x
GPU-Z claims to report how much VRAM the GPU actually uses, but there’s a significant caveat to this metric. GPU-Z doesn’t actually report how much VRAM the GPU is actually using — instead, it reports the amount of VRAM that a game has requested. We spoke to Nvidia’s Brandon Bell on this topic, who told us the following: “None of the GPU tools on the market report memory usage correctly, whether it’s GPU-Z, Afterburner, Precision, etc. They all report the amount of memory requested by the GPU, not the actual memory usage. Cards will larger memory will request more memory, but that doesn’t mean that they actually use it. They simply request it because the memory is available.”
Folks have been overestimating VRAM needs for years but actual testing shows that the manufacturer's actually know what they are doing. Alienbabeltech was the 1st to bring this to wide attention when they tested 45 or so GFX cards (GTX 770s 2GB + 4 GB) at 5760 x 1080. Only a handful of games showed any significant difference in fps and in every dsingle case, the games resolution and settings were such that the game was unplayable in either the 2GB or the 2 GB models. Not really important if 4 GB gets you a 30% increase in fpd when we are talking about going from 12 - 16 fps. In ever other instance, the fame were almost identical with the 2GB sometimes outperforming the 4 GB. The real interesting point was that max payne would not install at 5760 res with the 2 GB card, so they installed it with the 4 GB ... then went back to the 2 GB ... same image quality, same fps, same everything.
If ya look at the link above, they saw the same results, the only games where they could produce a significant difference where > 4 GB was needed, the game setting and resolution had to be such that fps was well below 30 and unplayable. This has been found in each and every case tho there are exceptions, poor console ports for example will benefit from more VRAM. But outside that no significant difference shave been found. The alien site no longer exists but ya can see the tables on this foreign language video
Same results here.... showing results with 6xx series, 7xx series, 9xx series
Gigabyte GeForce GTX 960 G1 Gaming 4GB review - VRAM Analysis 2GB vs 4GB - Alien Isolation
https://www.pugetsystems.com/labs/articles/Video-Card-Performance-2GB-vs-4GB-Memory-154/
In detail for the 970 .... keep in mind this was written in 2015 but the fact remains ... yeas you can create a problem by doing certain things when using resolution and settinmgs higher than recommended for that card. But if uyyou can produce an effect, the same effect is evident oin the 980 and doesn't have the 970s configuration.
http://www.guru3d.com/news-story/mi...rdor-geforce-gtx-970-vram-stress-test,12.html
After some internal testing here over the weekend we could quite honestly not really reproduce stutters or weird issues other than the normal stuff once you run out of graphics memory. Once you run out of ~3.5 GB memory or on the ~4GB GTX 980 slowdowns or weird behavior can occur, but that goes with any graphics card that runs out of video memory....
Thing is, the quantifying fact is that nobody really has massive issues, dozens and dozens of media have tested the card with in-depth reviews like the ones here on my site. Replicating the stutters and stuff you see in some of the video's, well to date I have not been able to reproduce them unless you do crazy stuff, and I've been on this all weekend.....Let me clearly state this, the GTX 970 is not an Ultra HD card, it has never been marketed as such and we never recommended even a GTX 980 for Ultra HD gaming either. So if you start looking at that resolution and zoom in, then of course you are bound to run into performance issues, but so does the GTX 980. Face it, if you planned to game at Ultra HD, you would not buy a GeForce GTX 970.
Overall you will have a hard time pushing any card over 3.5 GB of graphics memory usage with any game unless you do some freaky stuff. The ones that do pass 3.5 GB mostly are poor console ports or situations where you game in Ultra HD or DSR Ultra HD rendering. In that situation I cannot guarantee that your overall experience will be trouble free, however we have a hard time detecting and replicating the stuttering issues some people have mentioned.
With that out of the way, we can get to the issue ... As we can see here metro LL has no problem with the Asus Strixc 970
We are looking at a 11.8% advantage for the 980 here @ 1080p ... so if VRAM was a problem... we should expect to see the the 970s speed disadvantage increase substantially at higher resolutions ... but we don't.... at 1440p. it's just slightly lower at 10.6% and at 2160p it's only 7.4%
So if ya are not seeing 80 fps in Metro LL after your driver upgrade ... check your settings against that TPU used. Once it's known, hetehr you have an issue... we'll be in a position for figure out what it is.
https://www.techpowerup.com/reviews/ASUS/GTX_970_STRIX_OC/16.html