GFX for 5760x1200 or 3600x1920 Eyefinity

[skyjawa]

Hi all

Recently got set up with 3xDell u2412's (1920x1200) and started playing with Eyefinity setups.

With medium detail I seem to get around 45-60fps out of BO2, but BF3 is down around 20fps on low detail lol!!

So obviously my aging Xfire 5850 setup needs an upgrade! I've got 16GB Samsung Green, 3770k @ 4.5 running on an ASROCK Extreme6.

Given I already have ATI, and Nvidia's pricing seems a bit silly, I want to stay with a Radeon card/s.

Goal would be 60fps on BF3 in either of those res setups.

So for £300 it would seem a single 7970 could achieve what I'm after?

Or 7950's are getting down to £200ish now so would 2 x 7950's be better (though £100 more).

Or is there something I've not thought of which would meet my requirements with more bang for buck? (2x6950's 2GB ~£300)

Could do with some other input please chaps!
Thanks
Neil

 

[Rusty0611]

Read this for 7950 CF performance vs 680 SLI... My own testing:

http://forums.overclockers.co.uk/showthread.php?t=18455827

Buy one 7950... see how it performs and if you're happy with the compromise between image quality and FPS then stick with it. If not buy another .

Let me know if you have any questions.

 

[whyscotty]

2 x 7950's would be my call

 

[skyjawa]

I saw your thread Rusty, thats what got me wondering lol.

Its tempting that an OC'd 7950 is within 5% of a 7970, and then Xfired is considerably more powerful, but then you could overclock the 7970 and add Xfire.

The 7950 IceQ card is only £70 cheaper than a clocked 7970.

So it seems something like:

http://www.overclockers.co.uk/showproduct.php?prodid=GX-097-GI&groupid=701&catid=56&subcat=938

or

http://www.overclockers.co.uk/showproduct.php?prodid=GX-065-HS&groupid=701&catid=56&subcat=1673

and see if 1 card is enough if not add an Xfire at a later date.

So it seems that if I was to look at stock 7970 then the oc'd 7950 offers almost identical performance for quite a saving. But I think I lean to the clocked 7970 as I'm more likely to get away with just the one card....?

 

[Rusty0611]

Say for example one 7970 is 100% and a 7950 is 95%. Assuming 100% CF scaling then two 7970s are 200% and two 7950s are 190%. So two 7950s are still going to be 90% faster than a single 7970 so it's never going to be the difference between one card or not.

One 7970 will cope around the same as one 7950 which is why it's the better all round option. There won't really be a situation where a 7970 is OK and the 7950 isn't...

Also it's more that a 7970 at 1200 MHz is only 5% quicker than a 7950 at 1200 MHz. Both are as likely to get there it's just the 7950 starts from a lower point.

 

[Clav]

Say for example one 7970 is 100% and a 7950 is 95%. Assuming 100% CF scaling then two 7970s are 200% and two 7950s are 190%. So two 7950s are still going to be 90% faster than a single 7970 so it's never going to be the difference between one card or not.

One 7970 will cope around the same as one 7950 which is why it's the better all round option. There won't really be a situation where a 7970 is OK and the 7950 isn't...

Also it's more that a 7970 at 1200 MHz is only 5% quicker than a 7950 at 1200 MHz. Both are as likely to get there it's just the 7950 starts from a lower point.

Totally agree with this.

You will need crossfire to get the most out of your eyefinity set up. 2x 7950's are better price/performance than 2x7970's. Hence get 2x7950's or as suggested above get 1x7950 and see if you can get by with that for a bit first. If not buy a 2nd.

 

[se_vietboi]

I don't think any single card would give you the FPS you need. I would go Xfire 7950 like others have suggested.

 

[skyjawa]

cheers all, sense prevails and 7950 it is