It was not long ago that a new PCI ID appeared in the AMD Linux driver tied to the Polaris family of GPUs. Now there are rumors the company may be preparing to launch successors to the RX 570 and RX 580 based on a 12 nm version of Polaris; Polaris 30. According to the rumor, the supposed RX 670 would launch first and have the same number of stream processors as the RX 570, 2048. The alleged launch period for this GPU is October 12-15, so within a week. The RX 680 is expected to follow in November, and sport 2304 stream processors, like the RX 580.
Naturally with this news many have been speculating on what performance we might be able to expect. When AMD moved from 14 nm to 12 nm for the Ryzen CPUs we saw a bump in speeds, so these are expected to be faster but it is unknown if there might be some architectural tweaks as well. Only time will tell on that front, but at least it will not be long before we know both that and the pricing. The speculation from TweakTown is to see the RX 670 at around $200 to $250 with the RX 680 being between $280 and $350.
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