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VRAM paranoia

post #1 of 10
Thread Starter 
So I've had my 570 for a week or so now. I love it. I've recently been playing a certain upcoming game's alpha lately, and noticed the VRAM usage was almost hitting the 1280mb cap. Not sure if that'll drop with the final release/optimization (or it could RISE with the addition of extra visual effects). I think Crysis 2 DX11 uses like 1.7GB according to some posters on here.

I was planning on adding a second 570 in the fall...but should I be worried? Should I consider getting a 6950 2GB, and trading the 570 for a second one? Not sure how much of a hit I'd see with games going over 1280mb, since I'm not too sure how VRAM usage works.

Any input is helpful. Thanks.
Edited by TMallory - 7/31/11 at 9:07pm
post #2 of 10
As it is an alpha version, I suggest you wait for the final version and make your decision by that time.

Interestingly enough, I have read some HD6950 users are having Tessellation/DirectCompute paranoia and are thinking of switching to the GTX570, as far as that certain upcoming game is concerned. lol
post #3 of 10
Thread Starter 
Quote:
Originally Posted by windfire View Post
As it is an alpha version, I suggest you wait for the final version and make your decision by that time.

Interestingly enough, I have read some HD6950 users are having Tessellation/DirectCompute paranoia and are thinking of switching to the GTX570, as far as that certain upcoming game is concerned. lol
That's why I bought the 570 in the first place but mostly because AMD hadn't come out with their new drivers...maybe they've fixed the whole tessellation thing
post #4 of 10
NVIDIA is still better at tessellation (thought he gap has closed), and AMD is still better at OpenCL. Drivers aren't going to drastically change the balance of things that are rooted in architectural differences.

Anyway, there are some games that will use much more than 1,280MiB of VRAM, even at reasonable settings.
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post #5 of 10
Thread Starter 
Bump. Anyone know how VRAM works and what happens when you've hit the limit?
post #6 of 10
Quote:
Originally Posted by TMallory View Post
Bump. Anyone know how VRAM works and what happens when you've hit the limit?
Swap with system RAM
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post #7 of 10
Quote:
Originally Posted by beers View Post
Swap with system RAM
And/or the HDD. When it gets to that point, your performance will tank since your card(s) are stuck reading from the HDD to render each frame instead of the VRAM.

Case in point:



"In the graph above, we are running at 2560x1600 with 4X MSAA enabled and the rediculously tough Depth of Field enabled at Very High Quality.

The standard 1.5GB GTX 580 SLI configuration suffers miserably at these settings, it doesn't have the VRAM to support it. We had to stop the game cause it was just getting boring and we couldn't go anywhere."


http://www.hardocp.com/article/2011/...card_review/10
post #8 of 10
Thread Starter 
Yikes. That's quite a hit in FPS.
post #9 of 10
exactly why I'm dumping the extra money on a 3gig 580

just gotta wait for a little bit of a price drop...i hate paying full price.
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post #10 of 10
Quote:
Originally Posted by TMallory View Post
Yikes. That's quite a hit in FPS.
Vram choke is a pretty harsh place to be and once you've hit it there's nothing you can do about it except lower iq settings to alleviate the issue. The problem with that is it's a proverbial step backwards.
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