What do I need to run two graphics cards?

By TheLogicalDan
Sep 26, 2011
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  1. Ok, recently, it was confirmed that in order to run Battlefield 3 on Ultra you will need 2 graphics card. Now here is my question, what will I need in order to be able to support these 2 cards.

    The cards are 2 Radeon HD 6850.
    I have AMD Athlon II X2 255 Processor 3/11 dual core.
    8.00GB RAM
    Crosshair IV formula motherboard
    Power Supply - 350w (I know I need to upgrade, but I don't know how much I should have.)
  2. red1776

    red1776 Omnipotent Ruler of the Universe Posts: 5,867   +74

    I think you misread the quote from the EA guy. He said that you will need two GTX 580's (or equivalent) to run BF3 on highest settings. Two HD 6850's are are about equal to one GTX 580. You will be able run the game with one or two HD 6850's, just not on highest settings if this person is to be believed.
    You will need a PSU of 600w BTW. Secondly, BF3 is going to use up to 8 cores like it's predecessor and using a dual core is going to limit things for you.
  3. hellokitty[hk]

    hellokitty[hk] I'm a TechSpot Evangelist Posts: 4,317   +117

    I think one 6870 or 6950 would be best.
  4. TheLogicalDan

    TheLogicalDan Newcomer, in training Topic Starter Posts: 22

    Ok but should my computer be able to support the Radeon 6950 graphics card fine? (considering i update my PSU.)
    Also, I think i'm just going to still with dual core, may not be the best settings but it will be enough.
  5. hellokitty[hk]

    hellokitty[hk] I'm a TechSpot Evangelist Posts: 4,317   +117

  6. TheLogicalDan

    TheLogicalDan Newcomer, in training Topic Starter Posts: 22

    cool thanks for the help. Now just to figure out why the f my computer is going all haywire on me all the time.
  7. red1776

    red1776 Omnipotent Ruler of the Universe Posts: 5,867   +74

    What kitty said, and i am assuming that you have a 2nd usable PCIE slot?
  8. TheLogicalDan

    TheLogicalDan Newcomer, in training Topic Starter Posts: 22

    Yes I do. Thank you. I hope to get it soon. (maybe in October) but I think I should figure out what the current problem with my computer is first.
  9. TheLogicalDan

    TheLogicalDan Newcomer, in training Topic Starter Posts: 22

    Hey what about the Nvidea 550 ti? Those any good, cause I heard something about Nvidea's working better on BF3 (although I don't know if there true.)
  10. red1776

    red1776 Omnipotent Ruler of the Universe Posts: 5,867   +74

    The 560 TI is gives about 5-7% to 6950. If BFBC2 is any indicator of performance with the Frostbite 2 engine, there shouldn't be a significant performance loss after AMD gets their update/CAP out. If you are planning on going CF or SLI down the road I would stay away from doing it with the HD 6870 or the 560 Ti. Tom's Hardware did an interesting article on micro-stutter and had the same experience I have had building machines. That being that these two cards, for some reason, have a higher rate of stutter than others. I would go with the HD 6950, or the GTX 570.
    What is going on with your computer BTW?
  11. hellokitty[hk]

    hellokitty[hk] I'm a TechSpot Evangelist Posts: 4,317   +117

    Wasn't the triple 6870 really good?
     
  12. red1776

    red1776 Omnipotent Ruler of the Universe Posts: 5,867   +74

    it is, as a matter of fact Toms came to a conclusion that I noticed a couple years ago. Adding a third and or 4th card always stops micro stutter. I don't know why, but it does.
  13. Zilliak

    Zilliak TechSpot Enthusiast Posts: 233

    Since when did we need TWO GTX 580'S??????
  14. TheLogicalDan

    TheLogicalDan Newcomer, in training Topic Starter Posts: 22

    Here is what is wrong with my computer, its been happening for months, every day, happened 5 minutes before this post.

    http://www.youtube.com/watch?v=BDNIugQjI0A

    Happens either when I turn it on, after I use it for a litter, after I use it a lot, pretty much whenever it wants.

    And yea, i think ill go with 1 Radeon 6950, sounds good.
  15. red1776

    red1776 Omnipotent Ruler of the Universe Posts: 5,867   +74

    Thats what the rep said when asked if it could be run at max settings.
  16. TheLogicalDan

    TheLogicalDan Newcomer, in training Topic Starter Posts: 22

    turns out, he meant you need that if you plan on using 3 monitors.
  17. red1776

    red1776 Omnipotent Ruler of the Universe Posts: 5,867   +74

    well thats a bit more user friendly!...and perfect!
  18. Cinders

    Cinders TechSpot Chancellor Posts: 1,313   +12

    The PSU you select will depend on the video cards you eventually end up with. I have a slightly older HD 5870 video card and a PC Power & Cooling TubroCool 850 SSI to match it. I imagine you would need something similar for a set of HD 6850s in crossfire.
     
  19. hellokitty[hk]

    hellokitty[hk] I'm a TechSpot Evangelist Posts: 4,317   +117

    Not quite that much I'd think.


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