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GTX 670 SLI or 7950 CFX for 1440p gaming

post #1 of 28
Thread Starter 
Just as the question implies, which is a better choice? I have two GTX 570s in SLI right now, and just recently upgraded to a 1440p monitor. The cards are fast but I am limited by my 570s graphics memory (1.2Gb), so I am selling them and upgrading to either of the two above setups. I can get the 7950s for $580 and the 670s for $640. The cost difference is honestly negligible to me, so I will just choose whichever you guys think is the better setup.

Also, as a side note, has anyone seen/have any insight as to how both setups perform in Crysis 3 at 1440p? Thanks guys!
post #2 of 28
I just came recently from a quadfire 7950 and switched to a tri-sli 680 for surround gaming.

If you are only going to game on one screen go for the dual 7950s.

Only and only if you are going to OC them a bit to 1050+ mhz.

If you are not going to OC then go with the 670s.
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post #3 of 28

The two 7950s will be far superior. 6 gigs of vram will play Crysis 3 fantastically, and the 7950 is just as good if not better than the 670 (and you get free games).

 

I'll get back to you with some benchmarks.

post #4 of 28
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post #5 of 28
Quote:
Originally Posted by Tagkaman View Post

The two 7950s will be far superior. 6 gigs of vram will play Crysis 3 fantastically, and the 7950 is just as good if not better than the 670 (and you get free games).

I'll get back to you with some benchmarks.

You mean 3GB worth of ram. Crossfire mirrors and doesn't add ram.
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post #6 of 28
Thread Starter 
If I got the 7950s I would undoubtedly OC them. Having and not OCing them would be like not OCing a K series Intel haha. But I would only have 3GB of memory available because CFX can only use the vram of one card, as would SLI as well. But I don't doubt that they would be superior. I know that the 3GB of 384 bit memory is much better than the 670 offering, but I feel like my primary concern is CFX scaling vs SLI scaling with the two cards.

On that note I get the impression that SLI setups tend to be better supported. Like in Crysis 3 for example, my SLI setup works perfectly. On the other side though, I haven't seen any benchmarks, but I keep reading about issues with crossfire in Crysis 3. If you could find something proving otherwise, however, I would be very grateful!!

Thanks for the input so far guys.
Edited by fencefeet - 2/25/13 at 1:55am
post #7 of 28
Quote:
Originally Posted by King4x4 View Post

Quote:
Originally Posted by Tagkaman View Post

The two 7950s will be far superior. 6 gigs of vram will play Crysis 3 fantastically, and the 7950 is just as good if not better than the 670 (and you get free games).

I'll get back to you with some benchmarks.

You mean 3GB worth of ram. Crossfire mirrors and doesn't add ram.

 

Now that I did not know. However, I do honestly believe that the 7950 is the better card (this coming from a gtx 670 owner) and would highly recommend it.

 

Anyway, I'm pretty sure that there aren't many games around that will max out 3 gigs of vram (the only one that I know of is Skyrim heavily modded and maybe Crysis 3), so you should be fine.

 

Edit: Also, the crossfire issues in Crysis 3 only exist because it's a very young game. Give AMD some time and I'm sure they'll fix it up.

 

Also, Crossfire scales just as well as SLI these days in most cases.

 

Edit Edit: I just noticed that you're paying about a hundred dollars more for two 7950s than I payed for my single 670. Australian prices suck!


Edited by Tagkaman - 2/25/13 at 1:59am
post #8 of 28
Thread Starter 
Quote:
Originally Posted by Tagkaman View Post

Now that I did not know. However, I do honestly believe that the 7950 is the better card (this coming from a gtx 670 owner) and would highly recommend it.

Anyway, I'm pretty sure that there aren't many games around that will max out 3 gigs of vram (the only one that I know of is Skyrim heavily modded and maybe Crysis 3), so you should be fine.

Edit: Also, the crossfire issues in Crysis 3 only exist because it's a very young game. Give AMD some time and I'm sure they'll fix it up.

Also, Crossfire scales just as well as SLI these days in most cases.

Fair enough. That is certainly true. However, I still do feel like in general this tends to be the case more so with CFX than SLI, and even if games are eventually fixed it would be a bit frustrating if it continued to occur as new games are released. So, with that said, is there any consensus on the reliability (not performance) of CFX vs SLI? I used to own two different CFX setups (3x 3870s and 2x 4890s) and they performed admirably, but I do seem to remember drivers being an issue every now and then. This is as opposed to my first SLI setup with the 570s, which have pretty much been flawless.
Edited by fencefeet - 2/25/13 at 2:04am
post #9 of 28
Quote:
Originally Posted by fencefeet View Post

Fair enough. That is certainly true. However, I still do feel like in general this tends to be the case more so with CFX than SLI, and even if games are eventually fixed it would be a bit frustrating if it continued to occur as new games are released. So, with that said, is there any consensus on the reliability of CFX vs SLI? I used to own two different CFX setups (3x 3870s and 2x 4890s) and they performed admirably, but I do seem to remember drivers being an issue every now and then. This is as opposed to my first SLI setup with the 570s, and they have pretty much been flawless.

Simply put , single card performance=amd , SLI=nvidia ALL THE WAYYYYYYYYYYYYY! thumb.gif
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post #10 of 28

Here are a couple of discussions about crossfire vs sli reliability:

 

 

How 'reliable' is SLI and Crossfire nowadays? (2011)

 

 

Which to buy: Sli gtx 660 ti or 7950 crossfire or gtx 670? (2012)

 

Hope this helps.

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