A report from German-language tech site Golem contains what appears to be a slide leaked from AMD's GPU presentation at Hot Chips in Cupertino, and the results paint a very efficient picture of the upcoming Radeon R9 Nano GPU.
The spelling of "performance" doesn't mean this is fake, does it?
While only managing 3 FPS better than the Radeon R9 290X in this particular benchmark, this result was achieved with 1.9x the performance per watt of the baseline 290X in the test. The article speculates on the possible clock speed of the R9 Nano based on the relative performance, and estimates 850 MHz (which is of course up for debate as no official specs are known).
The most compelling part of the result has to be the ability of the Nano to match or exceed the R9 290X in performance, while only requiring a single 8-pin PCIe connector and needing an average of only 175 watts. With a mini-ITX friendly 15 cm board (5.9 inches) this could be one of the more compelling options for a mini gaming rig going forward.
We have a lot of questions that have yet to be answered of course, including the actual speed of both core and HBM, and just how quiet this air-cooled card might be under load. We shouldn't have to wait much longer!