Radeon HD 5770 Crossfire vs. Radeon HD 5850 vs. Radeon HD 5870?

which will give better performance for gaming on a resolution of 1440 x 900? Cpu is a Phenom II X4 955 @ 3.8 GHz
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More about radeon 5770 crossfire radeon 5850 radeon 5870
  1. You still haven't picked a GPU yet? ;) How many threads does it take? LOL

    @ 1440x900 you only need ONE HD5770. Anything more is fairly overkill.

    HD5770 Crossfire = HD5850 < HD5870
  2. Well I want to run FSX with everything maxed out and REX 2.0 and add on's but I don't think the 5770 will get it done very well...
  3. Best answer
    FSX is a CPU demanding game and you have a great CPU there, so don't worry about that... :)

    For your resolution, a single HD5770 is more than enough, believe us. :D
    Go for HD5850 or HD5870 if you on a plan to get a bigger monitor.
  4. I don't know about a bigger monitor but I might choose a different resolution though... Is resolution based off of monitor size or the type of resolutions your graphics card can be compatible with the monitor?
  5. Yup, with bigger monitor you can go with higher resolution, for 17" monitor = 1280x1024, for 22" monitor = 1920x1080.
  6. 5850 !!!
  7. Best answer selected by JuicyCrapachino.
  8. [Most] tests that I've seen show the 5770 CF >= 5870 AND you'll $AVE $$ ($100 w/5770 CF) ;)

    I assume that you "might" upgrade your monitor, adding another $160 to $300+ to your budget, if considering the HD 5770 CF <or> HD 5850 <or> HD 5770. Clearly, if you KEEP your monitor then a single HD 5770 would be more than good. The tests that you see, read or watch on Youtube typically have monitors 22"-24" with resolutions of 1680 x 1050 -> HD 1920 x 1080, or greater.

    At minimum going from a 1440X900 to a 1920X1080 requires TWICE the number of pixel calculations! IF you are buying a monitor then I'd recommend a true High Definition (HD) 1920 X 1080, I "personally" prefer the 24" variety.

    Good Luck!


    Bang for your Buck setup's:
    (1) Single Monitor non-HD 1440X900 -> (1) HD 5770
    (1) Single Monitor HD [1920X1080] -> CF HD 5770 (x2) or HD 5850

    (2) Two Monitors HD [1920X1080] -> CF HD 5850+ (x2)
    (3) Three Monitors HD [1920X1080] -> Triple CF HD 5850+ (x3)

    Yep, people Triple CF/SLI GPUs to a single Monitor to achieve "wacko" FPS. If you can sustain 30-40 FPS then anything more is simply bragging rights - period! The Human eye can only process 25 FPS and see "jumps" in the rendering; the sudden jumps or lagging frequently is from loading lags from your HDD which is another reason Gamers like SSD (Solid State Drives) and/or CPU - bottlenecking.
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