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HD5970 crossfire HD5850?

post #1 of 15
Thread Starter 
Hi, i am thinking about getting a HD5850 to crossfire with my HD5970, the main reason for this is to play witcher 2 stable 60fps, how many % performance boost would i get from this, not just in witcher2 but in all games in general.
If anyone here has a simmilar setup plz let me know what you think, thx alot for the help guys!
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post #2 of 15
Quote:
Originally Posted by Stiven122 View Post
Hi, i am thinking about getting a HD5850 to crossfire with my HD5970, the main reason for this is to play witcher 2 stable 60fps, how many % performance boost would i get from this, not just in witcher2 but in all games in general.
If anyone here has a simmilar setup plz let me know what you think, thx alot for the help guys!
I wouldn't recommend any more graphics power on your current psu.
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post #3 of 15
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Quote:
Originally Posted by railfan844 View Post
I wouldn't recommend any more graphics power on your current psu.
Yes, but i will probably get myself a new 1200w PSU then.
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post #4 of 15
your psu is ok, but its cutting a bit too close, a quality 850w should give you a bit of breathing room if you are going to push the clocks. 1200w is just overkill imo for that setup.

a 5970 is two 5870 cores running ~ 5850 speeds, so you can tri-fire them without any issues.
post #5 of 15
Thread Starter 
Quote:
Originally Posted by wermad View Post
your psu is ok, but its cutting a bit too close, a quality 850w should give you a bit of breathing room if you are going to push the clocks. 1200w is just overkill imo for that setup.

a 5970 is two 5870 cores running ~ 5850 speeds, so you can tri-fire them without any issues.
Thx, for help, i will purchase an HD5850 then, and see what the results are gonna be! =)
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post #6 of 15
yep it will work!
any card of the same series (58xx/59xx series) can be CF'd together, unlike nvidia.
the ONLY exception is a 3870+4870 combo.
but other than that, only the same series.
try unlocking the 5850. i think you can unlock it to 1600 cores but try it at your own risk!
    
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post #7 of 15
Thread Starter 
Quote:
Originally Posted by Enfluenza View Post
yep it will work!
any card of the same series (58xx/59xx series) can be CF'd together, unlike nvidia.
the ONLY exception is a 3870+4870 combo.
but other than that, only the same series.
try unlocking the 5850. i think you can unlock it to 1600 cores but try it at your own risk!
Thx, for help! will a HD5970+HD5859CF be better than HD6990 or GTX590?
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post #8 of 15
should be on par or slightly better but not a lot, for single monitor setup, trifire is plenty enough.
post #9 of 15
Quote:
Originally Posted by Enfluenza View Post
yep it will work!
any card of the same series (58xx/59xx series) can be CF'd together, unlike nvidia.
the ONLY exception is a 3870+4870 combo.
but other than that, only the same series.
try unlocking the 5850. i think you can unlock it to 1600 cores but try it at your own risk!
Theres nothing to unlock on the 5850. I think you are getting confused with the 6950
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post #10 of 15
Thread Starter 
Will i see a bigger performance boost with a HD5870 then a HD5850?
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