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

Last response: in Graphics & Displays
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May 15, 2010 9:19:13 PM

which will give better performance for gaming on a resolution of 1440 x 900? Cpu is a Phenom II X4 955 @ 3.8 GHz
a b U Graphics card
May 15, 2010 9:37:10 PM

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
May 15, 2010 9:38:19 PM

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...
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a c 189 U Graphics card
May 16, 2010 1:45:17 AM
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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.
May 16, 2010 4:51:56 AM

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?
a c 189 U Graphics card
May 16, 2010 5:18:33 AM

Yup, with bigger monitor you can go with higher resolution, for 17" monitor = 1280x1024, for 22" monitor = 1920x1080.
May 16, 2010 7:04:31 AM

Best answer selected by JuicyCrapachino.
a b U Graphics card
June 9, 2010 7:18:00 PM

[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!

Footnote:

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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