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780 SLI vs 7950 Trifire

post #1 of 9
Thread Starter 
Lets operate under the assumption AMD is going to fix their driver issues with multi gpu, so that said lets just look at the raw performance of these 2 setups.


3x 7950 - $900
2x 780 - $1300



I currently have the 7950s and they do 1125 core on stock volts. How do you think a pair of 780s would compare? (especially factoring in they are $400 more)


I have no brand preference i just like getting serious performance without completely ingnoring price/performance
Edited by Blindsay - 5/29/13 at 4:00pm
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post #2 of 9
I'd say 2x 7970 GHZ is the best bang for your buck.

You get diminishing returns with multiple gpu's that get worse as you increase. Your better off sticking with 2 cards but frankly 2x 780's is a waste of money in my opinion. I don't know your needs exactly but the performance difference between 7970GHZ to 780 is 20%. 20% is your average overclock and you would be saving 400$ compared to 2x 780's.

You also get the free games ftw thumb.gif
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post #3 of 9
Thread Starter 
Thanks for the suggestion but did you actually read the post?


"I currently have the 7950s and they do 1125 core on stock volts. How do you think a pair of 780s would compare? (especially factoring in they are $400 more)"


I have a single 2560x1440 screen but i will be getting 2 more so there wont be a situation that ill have too much gpu power
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post #4 of 9
Not factoring in price the 780's would be better due to scaling issues with more than 2 cards.

Factoring in price the 780's are definitely not worth it.
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post #5 of 9
Quote:
Originally Posted by Blindsay View Post

Thanks for the suggestion but did you actually read the post?


"I currently have the 7950s and they do 1125 core on stock volts. How do you think a pair of 780s would compare? (especially factoring in they are $400 more)"


I have a single 2560x1440 screen but i will be getting 2 more so there wont be a situation that ill have too much gpu power

1000watt psu might be pushing your luck for 3x 7970s, and 3930k if you plan to do overclocking...
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post #6 of 9
Thread Starter 
Quote:
Originally Posted by Qu1ckset View Post

1000watt psu might be pushing your luck for 3x 7970s, and 3930k if you plan to do overclocking...


7950s and they will be stock volts so ill be fine on 1000w, thank you though thumb.gif



Anyways, back to the original topic, how do we think 3x 7950s (in particular at 1125mhz) will compare to 2x 780s

Only reason id consider the swap to the 780s is they seem to overclock very well and it would give me an upgrade path to a third later on. I wouldnt consider upgrading to a 4th (even though my board supports it) 7950 because as bad as scaling can be with 3 cards, it seems aweful for 4
Edited by Blindsay - 5/29/13 at 5:51pm
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post #7 of 9
Quote:
Originally Posted by Blindsay View Post

Thanks for the suggestion but did you actually read the post?


"I currently have the 7950s and they do 1125 core on stock volts. How do you think a pair of 780s would compare? (especially factoring in they are $400 more)"


I have a single 2560x1440 screen but i will be getting 2 more so there wont be a situation that ill have too much gpu power

I did, but I seem to have missed that. headscratch.gif
I have no experience with triple crossfire so I do not want to make any recommendations based on that. Hopefully someone with more knowledge in this area could chime in. You would probably see better results be creating a post in the AMD video card thread. I know you are manufacturer agnostic but at this point it boils down to what kind of scaling will you see is you go with 3x 7950's. From there you could figure out if that would match up to 2x 780s or come close.
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post #8 of 9
Thread Starter 
Quote:
Originally Posted by Papadope View Post

I did, but I seem to have missed that. headscratch.gif
I have no experience with triple crossfire so I do not want to make any recommendations based on that. Hopefully someone with more knowledge in this area could chime in. You would probably see better results be creating a post in the AMD video card thread. I know you are manufacturer agnostic but at this point it boils down to what kind of scaling will you see is you go with 3x 7950's. From there you could figure out if that would match up to 2x 780s or come close.

No worries. Thanks for the reply. My initial thoughts is that they will be a close match, possibly with the deciding factor being the exact clocks of the cards in question but I wanted to see what others thought
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post #9 of 9
Stick with the 7950s, cheaper, already have them. Performance between the 2 will be similar.
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