Overclock.net › Forums › Graphics Cards › Graphics Cards - General › 580 1.5GB tri vs. 580 3GB tri vs. 6970 2GB tri: Which is truly fastest?
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580 1.5GB tri vs. 580 3GB tri vs. 6970 2GB tri: Which is truly fastest?

post #1 of 25
Thread Starter 
Which of these is truly fastest in tri-sli/crossfire? There seems to be a lot of conflicting reviews on the net.

Opinions?
post #2 of 25
You did not provide at what resolution.
Champion
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Champion
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post #3 of 25
id say the 580 3gb
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post #4 of 25
Obviously the 580's
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post #5 of 25
Thread Starter 
Quote:
Originally Posted by LivingChampion View Post
You did not provide at what resolution.
Fastest should be fastest across the board, shouldn't it? That only makes sense.
post #6 of 25
Always going to be the 580 3Gs, but if its higher resolution such as 3x 1080p resolution or higher then it would be
580 3gb>6970 2gb> 580 1.5gb with games that need more than 1.5gb of VRam. Across the board would mean every game so the 580 1.5gb would have the advantage over the 6970 regardless since not all games would use up the 1.5gb of VRam.
But at 1080p the 580 1.5Gbs would have the constant advantage over the 6970s.

So with that all said and done:
580 3gb>580 1.5gb>6970 2gb
Edited by LivingChampion - 8/8/11 at 12:48pm
Champion
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post #7 of 25
Quote:
Originally Posted by LivingChampion View Post
Always going to be the 580 3Gs, but if its higher resolution such as 3x 1080p resolution or higher then it would be
580 3gb>6970 2gb> 580 1.5gb.

Tri-SLI 580 1.5GB's still beat out Tri-SLI 6970's as long as it isn't being CPU limited (HardOCP did a review on this in surround resolution, initially the 6970's won because the 580's were being limited by CPU, with an i7 2600k @ 4.8ghz the 580's really opened up) 3GB cards would be the best for performance across large resolutions bout would matter little on something such as 1920 x 1200 or lower as you would be EXTREMELY CPU limited, even 2560 x 1600 would be CPU limited.

http://hardocp.com/article/2011/05/0...trifire_redux/

Interesting read non the less
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post #8 of 25
GTX580s 3GBs but they are like $580 ~ $250 more for GPU then HD 6970 which is $750 more which is so much in fact with that much you can water cool the HD 6970s and still have some.
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post #9 of 25
Thread Starter 
Quote:
Originally Posted by LivingChampion View Post
Always going to be the 580 3Gs, but if its higher resolution such as 3x 1080p resolution or higher then it would be
580 3gb>6970 2gb> 580 1.5gb with games that need more than 1.5gb of VRam.
But at 1080p the 580 1.5Gbs would have the advantage over the 6970s.
If 6970 Tri-CF is faster than 580 1.5GB Tri-SLI at high resolutions, then wouldn't 6970 Tri-CF be faster than 580 1.5GB Tri-SLI at all resolutions? That only makes sense, doesn't it?
post #10 of 25
the 3xSLI 580 3GB is hands down faster than the Trifire 6970's. But lets put this into perspective.

3-way SLI 580 3GB = ($1620 newegg.ca)
Tri-fire HD6970 2GB = ($930 newegg.ca)

For $690 more they better be faster...
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