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7970 vs 770 in terms of Vram for 1900X1200 gaming - Page 6

post #51 of 53
Quote:
Originally Posted by Edwardccm View Post

That's the memory bandwidth hence with overclocking you could increase memory bandwidth

so, the 770 has 224 and some are saying that this is the limiting factor to effectively use even 2GB. But according to AB and based on the game you are playing this isn't true, since it showed 2800MB at one time. confusing.
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post #52 of 53
buffering and utilizing are two different things. the 770 is buffering 2800MB, but utilizing, as in processing, 1024MB at a time. a 7970 can buffer up to 3072MB if the app requires, but can only utilize 1536MB at a time. this is where it gets confusing because people use wrong words. if a game/app is programmed to use all available video memory, then it will buffer as much as it can. the higher the texture map, the more space it requires. Skyrim for example. Ultra high res 4K texture mods, draw distance increase, all require lots of video memory, and if it doesn't get what it wants, it then buffers in and out causing frame drops and slow downs when loading distant areas, and/or especially when turning left or right. just because a gpu doesn't have enough power, does not mean that the game/app won't take advantage of it. games are moving forward it texture quality and their ability to use as much video memory as possible, that having a 4GB 770 will not only help in this aspect, but it will also open other options like multi monitor surround, and give a better resale value when upgrading. that $60 will go a long way later. If you can afford it, then get it. But if you can't, then that is a different story, and you should go with the 2GB version smile.gif
    
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post #53 of 53
Guess he knew that...
But that is not direct correlation of real life performance to theoretical memory bandwidth to begin with, so the whole point was that throwing around numbers about what 256bit or 384bit or w/e theoretically can push, doesn't inform an educated desision based on end-results, just the ability for people to use their calculator for simple math.
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