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Trifire (5870+5970) vs Quadfire (5970+5970)

Last response: in Graphics & Displays
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October 1, 2010 11:36:48 PM

So, I have searched on this topic and having a hard time finding any actual benchmarks or info, there is one old thread but it's more broad.

So I already have one 5970 card I run at or above 5870 speeds but it still doesn't give me as high of FPS as I would like to see in some new games with settings cranked up. With the 6000 series coming out I'm sure the 5000 series prices will go down a bit, but even if they didn't... Just not sure if the 2nd 5970 will be that much better then if I got a 5870 instead. I have seen comments that quadfire doesn't scale as well as trifire and I have also seen people say their 4870's crossfired did scale well. Any help / info / bechmarks appreciated. Thanks.

My Rig:
Antec P193
Corsair 850w PS
Phenom II X4 965 OC:3.8ghz
Gigabyte 890-fxa-ud7
Asus HD 5970 875mhz x 1275mhz
Gskill 8gb (2x4gb) 1600 Cas 7
Crucial C300 256mb Sata3 SSD
LG 24" 1080P LED Backlit Display

Plan on upgrading the power supply to corsair's new 1200w when I add the second graphics card.
October 1, 2010 11:40:50 PM

The difference isn't much, scaling past 3 cards just isnt the best. Heres a review with the Ares (Basically your card, 5870X2), the difference is 8% on 2560x1600.



What games are you struggling with anyways? A 5970 should max out 1080P with ease.
October 2, 2010 12:21:28 AM

Fermi SLI scales a lot better, if you want more I would suggest 2x 480 or 470 or 3x 460.
Related resources
October 2, 2010 12:23:19 AM

jryan388 said:
Fermi SLI scales a lot better, if you want more I would suggest 2x 480 or 470 or 3x 460.

2*480=$1000, on par with 5870-Trifire;
2*470=$600, on par with 5970+5850
3*460 is just not possible.
October 2, 2010 12:31:14 AM

Timop said:
2*480=$1000, on par with 5870-Trifire;
2*470=$600, on par with 5970+5850
3*460 is just not possible.


Mmm 2*480=bad idea, never a very good buy in the first place.
2*470 costs same a 5970, and nearly as good as another 5850.
3*460 is around 5970-level performance, and 2/3 the price.
October 2, 2010 12:33:32 AM

jryan388 said:
Mmm 2*480=bad idea, never a very good buy in the first place.
2*470 costs same a 5970, and nearly as good as a whole 'nother 5850? Sounds good to me.
3*460 is very possible... but anyway just 2*460 sli is around 5970-level performance, and 2/3 the price...

Tell me how 3*460 is possible?
The 460 is capped at dual SLI.
October 2, 2010 12:35:39 AM

Timop said:
Tell me how 3*460 is possible?
The 460 is capped at dual SLI.

Oh I didn't know that my bad.
Dang if they did allow 3x and 4x 460 sli it would be killer...
October 2, 2010 12:38:42 AM

Also, you missed the fact is he has a 5970 and wants MORE performance, i which it would not be ideal for him to sell the 5970 and buy 2 new cards for $600 when he could simply buy another card for $350 and get better performance.

Finally, the main point is he has an AMD board which does not support SLI, so Nvidia solutions are totally out of the question.
October 2, 2010 2:30:23 AM

OK then get a 5870
October 2, 2010 2:31:44 PM

Thanks for the input guys, does sound like a 5870 is probably the way to go instead of another 5970
October 2, 2010 2:42:21 PM

Looking at prices a 5970 really isn't that much more then a 5870 so I'm still tempted to go that route, you would think scalability for 2x5970 might improve in time with newer drivers or newer games taking better advantage of the 4 gpus. ugh. tough call.
October 2, 2010 3:19:52 PM

Totalslaughter said:
Looking at prices a 5970 really isn't that much more then a 5870 so I'm still tempted to go that route, you would think scalability for 2x5970 might improve in time with newer drivers or newer games taking better advantage of the 4 gpus. ugh. tough call.

I think you should wait.
HD6000 seems to be pretty promising. Since your budget is so high, getting a major overhaul isn't completely out of the question.

The scaling should improve, but barely. Drivers are already "mature" and the main cause in poor scaling is more in the hardware.
!