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Two HD 6850s but different brands

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December 5, 2012 4:01:40 PM

I have a Sapphire Radeon HD 6850 and want to buy another to have in crossfire and there is a cheaper XFX HD 6850, If I buy this will it still work in crossfire? Also I have a AMD FX-4100 and want to upgrade and I don't really like Intel because they are overly priced but I have narrowed it to two processors the FX-8150 or FX-8350 is there much difference between them? Is it worth the extra £30?

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December 5, 2012 4:12:39 PM

The only thing that matters is clock speed if you buy a slightly slower clocked 6850 your Sapphire will slow down to macth that speed.

Also you really want FX-8350 its the piledriver which is faster than 8150 bulldozer
a b U Graphics card
December 5, 2012 5:29:12 PM

Brands doesn't matter, you need to match the first two numbers of both cards, like 4870 and 4850, also the speed clock should match,,,otherwise one of the cards will drag the other higher one to its speed
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December 5, 2012 6:12:29 PM

merandos said:
Brands doesn't matter, you need to match the first two numbers of both cards, like 4870 and 4850, also the speed clock should match,,,otherwise one of the cards will drag the other higher one to its speed



Its not the first two numbers.. AMD has a chart that lists which cards can crossfire which which cards. One example being that a 6770 can run CF with a 5770, but they will both run at the 5770s speed.

Brand does not matter.

8350 is much better.
December 5, 2012 7:15:49 PM

imaplonker said:
I have a Sapphire Radeon HD 6850 and want to buy another to have in crossfire and there is a cheaper XFX HD 6850, If I buy this will it still work in crossfire? Also I have a AMD FX-4100 and want to upgrade and I don't really like Intel because they are overly priced but I have narrowed it to two processors the FX-8150 or FX-8350 is there much difference between them? Is it worth the extra £30?


i5 3570k is same price or maybe a little less than those FX-8XXX, much better for gaming. My suggestion would be if you can sell your 6850 to make your budget bigger for a better card.
a c 358 U Graphics card
December 5, 2012 9:01:21 PM

Basically match the same card with the same clock speed and the same amount of RAM. If clockspeed / RAM differ, the it will use the lowest for each. Clockspeed and RAM do not stack for XFire or SLI.

The Radeon HD 5770 and Radeon HD 6770 can be XFired because they are the exact same card. AMD simply updated the name.
a b U Graphics card
December 6, 2012 7:20:29 AM

velosteraptor said:
Its not the first two numbers.. AMD has a chart that lists which cards can crossfire which which cards. One example being that a 6770 can run CF with a 5770, but they will both run at the 5770s speed.

Brand does not matter.

8350 is much better.



The 5770 and 6770 can only be Crossfired because they are the same card, but that doesn't apply on anyother card from AMD, you basically need to match the chip series xx50 or xx70....
Anonymous
a b U Graphics card
December 6, 2012 3:51:25 PM

wait so any intel i5 works with the radeon HD 7850 ( iam a noob at this )
December 12, 2012 9:01:07 PM

Decided to save money and wait and get a better card like the Radeon HD 7950 to avoid micro-stutter and I have decided on the FX-8350. thanks for the help
a b U Graphics card
December 13, 2012 9:04:09 AM

Quote:
wait so any intel i5 works with the radeon HD 7850 ( iam a noob at this )

Sure, why wouldn't it ? :) 
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