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6950 unlocked crossfire vs GTX 580

They're roughly the same price:

XFX 6950 - $239.99 ($209.99 after rebate) x2

EVGA GTX 580 - $499.99 ($479.99 after rebate)

What do you guys think? I've heard that crossfire doesn't always scale properly
25 answers Last reply Best Answer
More about 6950 unlocked crossfire
  1. On paper, 2x 6950 unlocked are obviously faster than a single 580. In practice, it depends which game you're trying to play. Crysis 2, for example, does not play nicely with crossfire.
  2. the 6950, alone, is pretty close to the 580 in most titles. most titles take advantage of crossfire. 2x6950 utterly destroy a 580. not to mention the extra ram, which is starting to be used (at high res) by games like bf3. this trend will only continue, and if you have 2x6950, ull have the horsepower to use that ram
  3. Also, don't expect any 6950 2gb to unlock easily. In fact, I wouldn't even try it unless it has a dual bios switch. If it does not have a bios switch and it fails to unlock then it's bad news.
  4. well, would it be worth getting the 6950's instead of a 580 without unlocking them?

    as for games, the main one I want to upgrade for is BF3

    just trying to see what the best bang for my buck is
  5. just get 6950s with a bios switch ;) many of them simply wont unlock, as they have rev.2 pcb
  6. personally i would suggest the toxic. the pcb isnt rev 1 or 2, its something sapphire made all on their own. lil bit beefier. different layout. unlocks most the time.

    but mostly, since you want crossfire... it vents the heat out the back. blowing hot air from the upper card onto the lower card has caused some people problems... to say the least
  7. neonneophyte said:
    the 6950, alone, is pretty close to the 580 in most titles. most titles take advantage of crossfire. 2x6950 utterly destroy a 580. not to mention the extra ram, which is starting to be used (at high res) by games like bf3. this trend will only continue, and if you have 2x6950, ull have the horsepower to use that ram


    I have cross fire. Most titles suck with cross fire. even when frame rates are high, the games still look like ***. nowhere near smooth as they should be.
  8. CF 6950s steamroll a 580, or nuke it if you can manage to unlock. And CF works for everything I've tried it with, and scales better than SLI.
  9. solomonshv said:
    I have cross fire. Most titles suck with cross fire. even when frame rates are high, the games still look like ***. nowhere near smooth as they should be.


    ya, but crossfire of what? 6950s are known to have better crossfire than the 5000 series
  10. The Sapphire Toxic comes with a BIOS switch, and doesn't need to be flashed... Sapphire included the 6970 BIOS on the card. Basically, install card, install drivers, shut down flip BIOS switch and reboot. 1536 shaders and 6970 clocks... 95% +/- success rate.

    2 6950's CF handily beat a 580~

    http://www.anandtech.com/bench/Product/299?vs=305
  11. neonneophyte said:
    the 6950, alone, is pretty close to the 580 in most titles.

    untrue, the GTX 580 is superior, can be compared only with HD 5970 (the dual GPU)
  12. RussK1 said:
    The Sapphire Toxic comes with a BIOS switch, and doesn't need to be flashed... Sapphire included the 6970 BIOS on the card. Basically, install card, install drivers, shut down flip BIOS switch and reboot. 1536 shaders and 6970 clocks... 95% +/- success rate.

    2 6950's CF handily beat a 580~

    http://www.anandtech.com/bench/Product/299?vs=305

    +1
  13. Simply the HD 6K series scales better than the previous HD 5K series and the current nVidia GTX 5K series.
    6 HD 6950s beats a single GTX 580 and very close and sometimes better than a single HD 6990.

    What Russwood said about the Toxic is true, it's faster than HD 6970 itself.
    http://www.xbitlabs.com/articles/graphics/display/sapphire-radeon-hd-6950-toxic.html

    But if i were you, i would get any good cooled HD 6950s and CF them, the Toxic is very similar to a reference design card which runs hotter and noisy.
  14. Has anyone actually tried 6950's in CF? Just wondering what it actually feels like since I always hear about micro stuttering and all that. Does this series have it better in that regard?
  15. wanderer said:
    Has anyone actually tried 6950's in CF? Just wondering what it actually feels like since I always hear about micro stuttering and all that. Does this series have it better in that regard?

    Microstuttering occurs with low end GPUs such as HD 6850/70, if you read the article by Toms explained recently about Microstuttering you'll find out that it's barely noticeable with stronger GPUs such as HD 6950/GTX 560Ti. and with V.SYNC enabled..Microstuttering like never existed.
  16. HD 6950s VS GTX 580
    http://www.anandtech.com/bench/Product/299?vs=305
    Beat the GTX 580 by almost 40% depending on the game.
  17. Best answer
    ilysaml said:
    Simply the HD 6K series scales better than the previous HD 5K series and the current nVidia GTX 5K series.
    6 HD 6950s beats a single GTX 580 and very close and sometimes better than a single HD 6990.

    What Russwood said about the Toxic is true, it's faster than HD 6970 itself.
    http://www.xbitlabs.com/articles/graphics/display/sapphire-radeon-hd-6950-toxic.html

    But if i were you, i would get any good cooled HD 6950s and CF them, the Toxic is very similar to a reference design card which runs hotter and noisy.


    That's a good article... I like this one too http://hexus.net/tech/reviews/graphics/31471-sapphire-radeon-hd-6950-toxic-2gb/

    Here's a link to a thread where a guy was trying to decide between a 570 and 6950... While the 570 is a great card no doubt so is the 6950 in it's own right "if" one is smart in choosing the right one in particular... while I have 6950's I wasn't really smart per se, I was impulsive and bought XFX CNDC models when I should have gotten the Toxics. The reviews on Newegg are unheard of... all success stories of unlocks with little to no trouble. Hindsight is 20/20 I guess...

    http://www.tomshardware.com/forum/329492-33-nvidia#t2458278
  18. wanderer said:
    Has anyone actually tried 6950's in CF? Just wondering what it actually feels like since I always hear about micro stuttering and all that. Does this series have it better in that regard?


    http://www.tomshardware.com/forum/330231-33-benchmarks-benchmarks-benchmarks#t2461622
  19. don't unlock the 6950s if they don't have a bios switch.because it the unlocking process goes worng then you can't reset back to the previous bios and your card'll be a dead card.
    As for the question 2x6950 CF at stock perform faster than any single card config.But in certain games CF or SLI doesn't score good.
  20. theuniquegamer said:
    don't unlock the 6950s if they don't have a bios switch.because it the unlocking process goes worng then you can't reset back to the previous bios and your card'll be a dead card.
    As for the question 2x6950 CF at stock perform faster than any single card config.But in certain games CF or SLI doesn't score good.


    The Sapphire Toxic 6950's have a bios switch and are already unlocked from Sapphire. No flashing required - read the post.
  21. my CF 6950's have never microstuttered. Also, I have the moddable cards but have never felt the need to unlock them.
  22. rockitman said:
    my CF 6950's have never microstuttered. Also, I have the moddable cards but have never felt the need to unlock them.


    I have 6950's as well... no stuttering; the only thing they struggle with is really high tesselation.
  23. Best answer selected by mousemonkey.
  24. This topic has been closed by Mousemonkey
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