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ahh.. a LIL CoNFUSED ????

post #1 of 10
Thread Starter 
hello,
i own a sapphire 6870 and will be xfiring with another 6870 soon.
But i'm alil confused that if i do crossfire with a 6870 of some other brand rather than sapphire....
There will be some performance?? issue or i'm good to go with another 6870 of any brand like msi hawk ,asus dcII and like that....

Help...
BLUE CARBIDE
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BLUE CARBIDE
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post #2 of 10
You can CrossFireX any two company cards. If one of them is an overclocked card (560 vs 560 Ti for example) then they will both run at the slowest speed.
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Feed The Dada
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post #3 of 10
Crossfiring with different brands will not affect performance at all. You will get a difference in performance depending on the series of the card.
post #4 of 10
Tee only problems ive heard of have been when one is reference design and one is nonreference (aka a DCII or Matrix or something). But even those arent very common. Also, if you get one with different memory amounts, aka a 2gb vs 1gb, the cards will both run as though they have the lower amount of memory. (I dont think this applies to 6870s though)
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POLARIS
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Red Alert SR-1
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post #5 of 10
Thread Starter 
i had a non reference sapphire 6870 and u could look for some of its pics.they are in my profile....
If do xfire it with a msi hawk and overclocked both of'em to same core and gpu clock will there be any problem...
BLUE CARBIDE
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BLUE CARBIDE
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post #6 of 10
A little confused, eh?

You can crossfire an AMD graphics card of one brand with a similar card from another brand with issues.

The only drawbacks I could see are:
1. If one card is slower than the other, then both cards will run a the speed of the lesser card.
2. If one card has less VRAM than the other, then both cards will only use as much VRAM as the lesser card.
3. It won't look as uniform if both cards have different cooler designs, generally a given for non-reference cards.


(1.) can be cured with an overclock of both cards, provided they both run stable afterwords
(3.) is a perfectionist thing for me

So really the only drawback for you would be (2.)
Edited by That Guy - 3/5/12 at 6:56pm
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BlueRaven
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post #7 of 10
Quote:
Originally Posted by That Guy View Post

A little confused, eh?

You can crossfire an AMD graphics card of one brand with a similar card from another brand with issues.

The only drawbacks I could see are:
1. If one card is slower than the other, then both cards will run a the speed of the lesser card.
2. If one card has less VRAM than the other, then both cards will only use as much VRAM as the lesser card.
3. It won't look as uniform if both cards have different cooler designs, generally a given for non-reference cards.


(1.) can be cured with an overclock of both cards, provided they both run stable afterwords
(3.) is a perfectionist thing for me

So really the only drawback for you would be (2.)

i've only seen one type of 6870 board with more than the 1GB of Vram and it was from XFX here. so 2 should be a non-issue.
post #8 of 10
No there will be no problem unless the specs are different. Like one brand has an overclock and the other doesn't but that doesn't really matter. You will only have problems with the RAM difference that different brands have. smile.gif
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post #9 of 10
Thread Starter 
so i'm good to go with a msi 6870 hawk with my sapphire 6870..
My current 6870 set at 990/1150...so i'v to run the msi one in the same clock too..... am i right na ?
BLUE CARBIDE
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BLUE CARBIDE
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WD 7200 1tb CORSAIR FORCE GT  ASUS OPTICAL DRIVE CORSAIR H80 
CoolingOSKeyboardPower
COOLER MASTER R4 120 mm (7 fans) WINDOWS 7 64bit CORSAIR K60 CORSAIR GS800 
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post #10 of 10
Quote:
Originally Posted by henryy5ghz View Post

so i'm good to go with a msi 6870 hawk with my sapphire 6870..
My current 6870 set at 990/1150...so i'v to run the msi one in the same clock too..... am i right na ?

correct. hopefully your new card will be stable at those clock speeds.
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