AMD Radeon HD 7870 Tahitit LE CNAC v CDFC?

[Alpaxj1]

Hi,
I was wondering if someone could tell me if there is any difference between the GPUS below, ive bought a CNAC version but i got a CDFC version instead:

XFX FX-787A-CDFC
and
XFX FX-787A-CNAC

Any difference of the Version of the 7870 GPU?

Some websites give them different specs?

Any advice or help would be great fully appreciated.

thanks!

 

[The Lads]

You are lucky, the CDFC is the Tahiti LE card, it's more powerful than the CNAC, which is a Pitcairn gpu.
The Tahiti card can xfire with any 79++ series card, and also with the newer r280 and r280x..

 

[Alpaxj1]

Hi many thanks for your fast response. I wasn't to sure as some websites say the CNAC version has higher Stream Processors with 5000mhz Effective speed.

 

[Alpaxj1]

One last Question,
the CDFC requires 1x8pin and 1x6pin. I have done a little research using **GOOGLE** but cant find whether the 7870XT would be ok using 2x6pins (missing 2xpins).

I thought of using the CPU 8-pin connector and just use a 4pin connector for the CPU instead...not sure this is a good idea thought