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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.
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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.
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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.
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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.
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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.
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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...
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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.
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October 2, 2010 2:30:23 AM

OK then get a 5870
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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
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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.
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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.
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