5870 and 7870 Should I CrossFire?

Moocats

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This question is regarding ATI GPU's (Grpahics Cards). It pertains to CrossFire options and what is recommended.

I would request any input made by the community be fairly simple to understand. I am not a novice but neither am I an expert and I have zero experience in connecting two GPU's together. This topic may be of help to others later. Please, simplicity where possible.

At the moment I have two graphics cards. One is a 7870 the other a 5870. For the sake of added information I also own an A10-7870k which is an AMD APU chip.

I have 2 computers.
Machine one is using the APU.
Machine two is a mid range AMD HexCore. (FX 6300)

Here are the options I'm faced with.

Should I:

A: [strike]CrossFire the 5880 with the 7870 and put both in machine two[/strike]
B: CrossFire the 5850 with the APU in machine one and place the 7870 in machine two on it's own
C: [strike]The same as option A[/strike] and also buy an R7 250 to CrossFire with the APU in machine one
D: Don't use the 5870.

Or perhaps I should do something else?

In an ideal world I'd want option C. I am happy to buy the R7 250 as it is cheap. But I need to know if the 5870 and the 7870 will work well together or not or would the 7870 alone in fact be stronger? That is all assuming I can even CrossFire different card families the 58## with 78## I always believed that this was not possible but I've been led to believe it now is with certain cards.

EDIT: Confirmed that a CrossFire between a 5870 and 7870 is not possible as suspected. I suppose that was wishful thinking to begin with :(.


Thank you in advance for any and all advise I can be issued.


-Kane


For the sake of reference here are EXACT links to the cards:



The 5870 (click me)
The 7870 (click me)
 

Moocats

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As I suspected ss202sl but it's good to have a final answer on that point.


Also, the link is a handy resource, thanks for that.

So. knowing that I can not combine the two, what do people suggest I do instead?
 

Moocats

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Oct 24, 2014
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Oh wow look at that.

I called it! I guessed the R7 250 and according to your link that is the exact card I should use with the A10-7870K APU. That was a complete guess. Hah!

Thanks again ss202sl. Very useful you are.