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2560 * 1440 Vram concerns

post #1 of 26
Thread Starter 
I'm hopefully getting a new 2560*1440 monitor in the coming weeks and as a result I'll be replacing my 570 with a new GPU.

It seems an obvious choice between two cards - A 7970 or 680.

7970

Pros -

Cheaper than the 680 by a decent margin
3GB VRAM compared to 2GB with the 680

Cons -

Most, if not all, benchmarks place it behind the 680 in BF3 @ 2560*1440 (BF3 being the game I play the most)
I've heard stories about crossfire issues in some games (Not an immediate issue but I might want to add a second card one day)

680


Pros -

Faster by a discernible amount in BF3 benchmarks @ 2560*1440
SLI seems to work well (No plan to go down SLI route just yet)

Cons -

More expensive
2GB VRAM an issue?

I guess my concern really boils down to one thing. If I spent the extra £50/£60/£70 for the 680 would I see any VRAM issues gaming at 2560*1440?


(Note - I've not discussed the 7970 GHZ edition or the 680 4GB edition as they're outside of my budget)
Edited by .Griff. - 8/21/12 at 6:07am
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post #2 of 26
At that resolution I'd get the 4GB just to be safe. That should last you a few years I'd hope. If you can't afford it, just wait awhile and save up.
thumb.gif
post #3 of 26
Thread Starter 
Quote:
Originally Posted by Cakewalk_S View Post

At that resolution I'd get the 4GB just to be safe. That should last you a few years I'd hope. If you can't afford it, just wait awhile and save up.
thumb.gif

The cheapest 680 I can find in the UK is around £350. The cheapest 4GB 680 I can find is around £520 (Note I can get a new 7970 for £299). That's a massive difference hence I discounted the 4GB version from the start.
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post #4 of 26
2gb is fine you don't need 4gb for just 1 2560x1440

i run a 570 classified 1.2g and I just get near my vram limit because I don't run AA because at 1440p I haven't seen a reason to yet. Don't base it on bf3. bf3 eats up whatever vram it can just because it's there. 4gb won't offer you anything more because of 256 bit bus
post #5 of 26
id get a 7970 over a gtx 680 at that kind of resolutions. a big plus is it's cheaper as well. win/win
 
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post #6 of 26
Quote:
Originally Posted by .Griff. View Post

The cheapest 680 I can find in the UK is around £350. The cheapest 4GB 680 I can find is around £520 (Note I can get a new 7970 for £299). That's a massive difference hence I discounted the 4GB version from the start.

Well then get the 7970 IMO.
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post #7 of 26
You seem pretty set on your two choices, but I'm just going to throw in that I'm doing perfectly fine with a GTX 670 at 2560x1440. I've never run into VRAM issues with this card (it has 2GB as well). If you're willing to take suggestions, I'd recommend saving some cash and going with a GTX 670 and spending the extra on a non-reference card.
If you don't want to do that, I'd recommend the GTX 680 if you plan to stay at 2560x1440, and the 7970 if you plan to add another monitor since the memory bandwidth will surely help in that situation more than the 680.
Quote:
Originally Posted by Descadent View Post

2gb is fine you don't need 4gb for just 1 2560x1440
i run a 570 classified 1.2g and I just get near my vram limit because I don't run AA because at 1440p I haven't seen a reason to yet. Don't base it on bf3. bf3 eats up whatever vram it can just because it's there. 4gb won't offer you anything more because of 256 bit bus

This is exactly right. Many games will use as much VRAM as possible just because it's there. Unused RAM is wasted RAM, after all. It's like how Windows will find a way to cache 12GB of RAM when you're just sitting at the desktop.
Edited by Prox - 8/21/12 at 5:25am
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post #8 of 26
OP for 2560 x 1440 HD 7970 is a better option.

http://www.techpowerup.com/reviews/Point_Of_View/GeForce_GTX_680_TGT_Ultra_4_GB/28.html

perf summary 2560 x 1600

GTX 680 - 95
HD 7970 - 95
GTX 680 (1110 / 1176 boost ) - 100
HD 7970 (1050 ) - 105

Even with a 125 Mhz higher frequency GTX 680 on avg is slower than HD 7970 (1050 Mhz) . With a custom cooler like Sapphire Dual X and voltage tweaking HD 7970 can run at 1150 - 1200 Mhz speeds and even higher in a few cases. getting a custom cooler HD 7970 is better than a ref cooler HD 7970. you can pick up the sapphire dual x for 316 bucks at amazon uk.

http://www.amazon.co.uk/Sapphire-11197-06-40G-HD7970-GDDR5-Graphics/dp/B007IA6QLM/
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post #9 of 26
Thread Starter 
Thanks for the replies so far. Plenty to consider but it seems my VRAM concerns were misplaced.
Quote:
Originally Posted by Descadent View Post

2gb is fine you don't need 4gb for just 1 2560x1440
i run a 570 classified 1.2g and I just get near my vram limit because I don't run AA because at 1440p I haven't seen a reason to yet. Don't base it on bf3. bf3 eats up whatever vram it can just because it's there. 4gb won't offer you anything more because of 256 bit bus

I've currently got a Gigabyte GTX 570 SOC (custom PCB, upgraded VRM's etc) which is quite heavily overclocked. I'd never even considered using this card @ 2560*1440 as I simply assumed it would struggle at that res and the VRAM was quite low.
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post #10 of 26
Thread Starter 
Quote:
Originally Posted by raghu78 View Post

OP for 2560 x 1440 HD 7970 is a better option.
http://www.techpowerup.com/reviews/Point_Of_View/GeForce_GTX_680_TGT_Ultra_4_GB/28.html
perf summary 2560 x 1600
GTX 680 - 95
HD 7970 - 95
GTX 680 (1110 / 1176 boost ) - 100
HD 7970 (1050 ) - 105
Even with a 125 Mhz higher frequency GTX 680 on avg is slower than HD 7970 (1050 Mhz) . With a custom cooler like Sapphire Dual X and voltage tweaking HD 7970 can run at 1150 - 1200 Mhz speeds and even higher in a few cases. getting a custom cooler HD 7970 is better than a ref cooler HD 7970. you can pick up the sapphire dual x for 316 bucks at amazon uk.
http://www.amazon.co.uk/Sapphire-11197-06-40G-HD7970-GDDR5-Graphics/dp/B007IA6QLM/

That's the 7970 I'd been looking at and was the one I'd go for if I chose the 7970 option rather than 680. Although I'd not seen it that cheap so thanks for the link.
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