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7970 3GB or 680 2GB for 1440p - Page 2

post #11 of 53
Don't let anyone tell you different what you do not need another 1GB for, when the day comes and you NEED it you are in for some serious trouble or a new GPU wink.gif
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post #12 of 53
I hit 3 gb with my skyrim. ( 150+ mods, 50 of those textures )

Get the 7970.
post #13 of 53
I will also add that Bioshock Infinite maxed out uses 2GB and I have seen it go as high as 2300MBs. Crysis 3 is another one that can go over 2GB, and this is all at 1080p. More and more games are using a lot more VRAM, as we can see, they are starting to creep over 2GB, 3GB would be highly recommended at 1440p.
post #14 of 53
Quote:
More and more games are using a lot more VRAM, as we can see, they are starting to creep over 2GB, 3GB would be highly recommended at 1440p.
So true. I have always been an Nvidia man, but the VRAM-high AMD cards have been very tempting lately.... calling me to the dark side with the cheap prices and whatnot tongue.gif
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post #15 of 53
In BF3 I'm usually around 2.5GB WITHOUT MSAA or Post Processing. If I turn those on I easily max out 3GB and the game crashes. Same goes for heavily modded Skyrim - turn on AA and max out 3GB = crash.

If I were you I'd look at more than 3GB of vram for 1440p.
post #16 of 53
Quote:
Originally Posted by nugget toes View Post

In BF3 I'm usually around 2.5GB WITHOUT MSAA or Post Processing. If I turn those on I easily max out 3GB and the game crashes. Same goes for heavily modded Skyrim - turn on AA and max out 3GB = crash.

If I were you I'd look at more than 3GB of vram for 1440p.

Thats another good point. At 1440p I cant tell a difference in 2X from 8X. So many pixels to begin with!
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post #17 of 53
Quote:
Originally Posted by nugget toes View Post

In BF3 I'm usually around 2.5GB WITHOUT MSAA or Post Processing. If I turn those on I easily max out 3GB and the game crashes. Same goes for heavily modded Skyrim - turn on AA and max out 3GB = crash.

If I were you I'd look at more than 3GB of vram for 1440p.
Something else is wrong there. I've never had a game crash from running out of VRAM.

HardOCP more or less debunked the need for more than 2GB VRAM outside of surround resolutions using mulit card configs.

http://www.hardocp.com/article/2013/01/14/asus_geforce_gtx_670_directcu_ii_4gb_sli_review/9
post #18 of 53
Quote:
Originally Posted by Booty Warrior View Post

Something else is wrong there. I've never had a game crash from running out of VRAM.

HardOCP more or less debunked the need for more than 2GB VRAM outside of surround resolutions using mulit card configs.

http://www.hardocp.com/article/2013/01/14/asus_geforce_gtx_670_directcu_ii_4gb_sli_review/9

You are comparing a GTX 6xx 2GB to a 4GB

The big bottleneck here is the 256bit memory bus with memory bandwidth of 192.2GB/sec. So even if you feed 4GB to that small bus, it won't be able to supply the total of 4GB.


Now compare it to a HD 79x0 series with 3Gb of Vram at 384bit memory bus with memory bandwidth of 264GB/s.

Not the same story, the HD 7970 wins by a lot.


Thats why the GTX Titan has 384bit bus for its 6GB ram


MORE! (Click to show)
Quote:
The 4GB version of the GTX 6xx series is gimmick because of their small 256bit memory bus (192 GB/sec) that cannot suffice providing enough bus width for 4 GB

SOURCE


This is the difference in FPS from a 2GB to 4GB




Edited by KaRLiToS - 4/5/13 at 2:26pm
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post #19 of 53
Grab a 4GB 670/680 or 3GB 7970.
I would opt for the 680, as fast or faster stock for stock, overclocks well and of course, comes with Nvidia's superior driver suite with more features.

The 256bit bus is fine for 1440/1600p.
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post #20 of 53
Quote:
Originally Posted by KaRLiToS View Post

You are comparing a GTX 6xx 2GB to a 4GB

The big bottleneck here is the 256bit memory bus with memory bandwidth of 192.2GB/sec. So even if you feed 4GB to that small bus, it won't be able to supply the total of 4GB.


Now compare it to a HD 79x0 series with 3Gb of Vram at 384bit memory bus with memory bandwidth of 264GB/s.

Not the same story, the HD 7970 wins by a lot.


Thats why the GTX Titan has 384bit bus for its 6GB ram
They included 7970GHz Ed CFX in their tests as well. In most cases it wasn't able to attain higher playable settings than the 2GB or 4GB 670s.
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