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xfx 6850 cf questions

post #1 of 4
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i have an xfx 6850 dual fan edition. an here in the future i am thinking about cf. can you cf a 6850 with a 6870 or a 6950. i wish i would have paid the little bit extra for the 6870. but it was just over my budget that i refused to break at that time. thanks for you help.
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Bottle neck beast
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AMD 955 @ 3.2ghz gigabyte 890-gpa-ud3h visiontek 5970 in CF G.Skill 1600 8gb 
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western digital 320 gb lite on coolermaster hyper 212+ windows 7 ultimate 64-bit 
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23" acer G235H logitech g110 KingWin lazer 1000 watt psu Cooler master storm sniper 
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logitech x518 razer 
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post #2 of 4
I just tried 2 gigabyte 6850's with the dual fans, and they were pretty impressive. Had a little lag in Eyefinity res, but 5760x1080 is a lot to ask from 2 $180 cards.
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Red X9
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4790K @ 5ghz 1.350v 75c max load temps Asus Maximus VI Formula Evga Gtx Titan X @ 1500mhz / 7800mhz +112mv EK Acetal / Nickel / Nickel back plate 
RAMHard DriveHard DriveOptical Drive
Corsair Vengence Pro 32gig 2400mhz c11 red (4x8... 6x 256gig (1.5tb) in Raid 0 , OS / Gaming Drive 2 x Liteon 256gig (512gig) storage drives Asus Dvd-RW 
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2x 360mm Alphacool XT45 / 1x 480mm Alphacool Mo... EK X-Res 140 D5 vario Pump/Res combo + EK X-top... EK Supreme HF cpu / EK Acetal / Nickel with Nic... Windows 8.1 64bit 
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post #3 of 4
You can do that but I wouldn't do it.

If you crossfire a 6850 with a 6870, the 6870 will just act like a 2nd 6850 in your CF configuration.

Options: you either can get another 6850 or the sell the 6850 and get two 6870s or something else.
    
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post #4 of 4
2x overclocked 6850's in CFX will be great for 1080p gaming. As stated above, once you hit higher res (esp. on 3 screens) you will notice big drops in performance. But for one screen 1080 gaming, 2x 68XX series in CFX is a great bang for your buck.

I say go for it if you get a good deal on a 2nd 6850, and have good enough cooling potential for a slight OC.

here is a cool benchmark comparison tool.
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