The GM206-250 is believed to be a cut-down version of the GM206-300 GPU that is used by the GeForce GTX 960.
Well that’s not much, but don’t forget this information very fresh. The GM206-250 is cut-down version of GM206-300, which is the full processor with 1024 CUDA cores used in GTX 960. AMD’s own benchmarks compare Radeon R7 370 and R7 360 to GTX 750 Ti and 750 respectively. The launch of new GM206 graphics card will surely cause trouble to Radeon R7 300 products.