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confused ?

post #1 of 7
Thread Starter 
hello,
friends i would like to ask some questions
question 1
in crossfire setup the cards shoulld be of same series for instace- an amd 6870 can be crossfire with a 6850 ?
Question 2
the two cards that are used hould be of same company . For instance - a sapphire card can be crossfire with an xfx card ?
Question 3
therre is an increase in the performance twice or there is a slight increase .Thanxx !!
Edited by henryy5ghz - 2/3/12 at 8:31pm
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post #2 of 7

Answer #1 = In general they just need to be in the same generation ... same X100's series ... 5770 + 6770 (etc, see chart being the exception to the rule) 

AMD_CrossfireX_Chart_1618W.jpg

 

Answer #2 - Brand doesn't matter, it's fine to X-Fire Sapphire w/ MSI or ASUS ... just not XFX ... XFX sucks biggrin.gif ... no it's ok to x-fire w/ XFX too wink.gif

 

Answer #3 - not 100% of the way you asked question #3, but if one card is faster/better than the other, then YES you'll see a slight increase in crossfireX performance also ....

          example = If you X-fire a HD-6950 with a HD-6970 it is FASTER than X-fired dual 6950's, but SLOWER than X-fired dual 6970's.

 

          - IF what you were asking about is SCALABLITY ... it varies but is usually not a 100% (twice) bump ... more like 90% +/- which is MUCH better result than the SLIGHT bump you'd get from SLI'ing two nVidia Cards for example. tongue.gif  http://sites.amd.com/us/game/technology/Pages/crossfirex.aspx

 


Edited by LA_Kings_Fan - 2/3/12 at 10:07pm
   
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post #3 of 7
I believe the way the third question was meant to be asked was:

With Xfire, will my performance increase slighly, or will my performance double?

i.e: If I xfire two 6970s will my benchmarks double, or will they increase slightly...

I don't have the technical knowledge to answer the question, but I figured I'd contribute biggrin.gif
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post #4 of 7
Quote:
Originally Posted by brownbob06 View Post

I believe the way the third question was meant to be asked was:
With Xfire, will my performance increase slighly, or will my performance double?
i.e: If I xfire two 6970s will my benchmarks double, or will they increase slightly...
I don't have the technical knowledge to answer the question, but I figured I'd contribute biggrin.gif

Maybe THIS will help you.
post #5 of 7
Actually, going by that chart, it may have helped me in my decision on a graphics card lol.

According to their graph of overall performance, the HIS HD6850 is better than any sapphire card...even 69xx series?
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post #6 of 7

The charts read " HIS HD6850 in CF " ... CROSSFIREX ... yeah TWO 6850's are going to be better than any SINGLE 6950 or 6970, derp! doh.gif

 

Quote:
Originally Posted by brownbob06 View Post

Actually, going by that chart, it may have helped me in my decision on a graphics card lol.
According to their graph of overall performance, the HIS HD6850 is better than any sapphire card...even 69xx series?


 

   
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HP w2207h Widescreen HP Stock BFG Tech LS-680 HP Pavilion 
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post #7 of 7
lol, good call, can't believe I missed that. Still not sure why they would have done that comparison, why not Crossfire all the boards or run single boards for all the boards, just seems like an unfair comparison. :/
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