06-10-2014, 09:01 AM
(06-10-2014, 08:32 AM)smackem19 Wrote: I have a Radeon 290 which apparently does crossfire but I can find where on the board.
AMD got rid of the external Crossfire bridge starting with the R9 290. Crossfire is now done over the PCIe bus. However, this is irrelevant for hash cracking, where we do not need nor do we want Crossfire.
(06-10-2014, 08:32 AM)smackem19 Wrote: But the windows drivers have insisted that the 280 is a 7900 Series.
That's correct. The R9 280 is simply a re-branded HD 7970. It is not a new product.