In addition to the Radeon R9 Nano, AMD quietly launched the Radeon R9 370X, a new SKU to combat the GeForce GTX 950 and GTX 960, in the sub-$200 market. The R9 370X. Based on the 28 nm "Trinidad XT" silicon, this chip offers 1,280 stream processors, 80 TMUs, 32 ROPs, and a 256-bit wide GDDR5 memory interface, holding either 2 GB or 4 GB of memory.

Sapphire is the first to be out with an R9 370X product, based on its Vapor-X cooling solution, and available in both 2 GB and 4 GB variants. Sapphire's cards offer close to 1200 MHz core clock speeds, with 5.60 GHz (GDDR5 effective) memory, at which clocks, the memory bandwidth on tap is 179 GB/s. The card draws power from a pair of 6-pin PCIe power connectors, display outputs include two DVI, and one each of HDMI and DisplayPort.

AMD's upcoming Radeon R9 380X and R9 380 graphics cards, with which it wants to immediately address the GTX 980 and GTX 970, will be based on a "new" silicon codenamed "Grenada." Built on the 28 nm silicon fab process, Grenada will be a refined variant of "Hawaii," much in the same way as "Curacao" was of "Pitcairn," in the previous generation.

The Grenada silicon will have the same specs as Hawaii - 2,816 GCN stream processors, 176 TMUs, 64 ROPs, and a 512-bit wide GDDR5 memory interface, holding 4 GB memory. Refinements in the silicon over Hawaii could allow AMD to increase clock speeds, to outperform the GTX 980 and GTX 970. We don't expect the chip to be any more energy efficient at its final clocks, than Hawaii. AMD's design focus appears to be performance. AMD could save itself the embarrassment of a loud reference design cooler, by throwing the chip up for quiet custom-design cooling solutions from AIB (add-in board) partners from day-one.