AMD announced its most important GPU for the season, the Radeon R9 285. The chip is designed to compete with the GeForce GTX 760 from NVIDIA at not just performance, but also energy-efficiency, and low component costs, so AMD can price it better. Based on a brand new 28 nm silicon by the company, codenamed "Tonga," the R9 285 features 1,792 Graphics CoreNext 1.2 stream processors, 112 TMUs, 32 ROPs, and a 256-bit wide GDDR5 memory interface, holding 2 GB of memory.

AMD partners are free to come up with 4 GB variants. The card supports DirectX 12, OpenGL 4.4, and Mantle. It features new AMD innovations, such as XDMA CrossFire, TrueAudio DSP, and 4-display Eyefinity by plugging into every connector on the card (two dual-link DVI, one DisplayPort 1.2, and one HDMI 1.4a). The card draws power from a pair of 6-pin PCIe power connectors. Available now, the Radeon R9 285, from various AMD partners starts at US $249.

AMD production manager Devon Nekechuk, speaking at the company's 30 Years of Graphics event, disclosed that all AMD GPUs based on the Graphics CoreNext architecture will support DirectX 12, Microsoft's next generation multimedia API. The company is already up-to-date on the DirectX feature-level support, with support for DirectX 11.2. The company isn't drumming that up too loud, probably because it's developing an ecosystem for its own/competing AMD Mantle 3D API.

NVIDIA's next-generation GeForce GTX 880 graphics card is shaping up to be a true successor to the GTX 680. According to a Tyden.cz report, GTX 880 will be based on NVIDIA's GM204 silicon, which ranks within its product stack in the same way GK104 does to the GeForce "Kepler" family. It won't be the biggest chip based on the "Maxwell" architecture, but will have what it takes to outperform even the GK110, again, in the same way GK104 outperforms GF110. The DirectX 12-ready chip will feature an SMM (streaming multiprocessor Maxwell) SIMD design that's identical to that of the GeForce GTX 750 Ti, only there are more SMMs, spread across multiple graphics processing clusters (GPCs), probably cushioned by a large slab of cache.This is what the GTX 880 is shaping up to be.

Today, AMD announced support for Microsoft and its revamped graphics application programming interface, DirectX 12, a new "console-like" version of the graphics API that has inspired PC gaming for nearly two decades. During the Microsoft-sponsored panel, DirectX: Evolving Microsoft's Graphics Platform, AMD revealed that it will support DirectX 12 on all AMD Radeon GPUs that feature the Graphics Core Next (GCN) architecture.

AMD will support and collaborate with Microsoft on the development of the generational advancement of the API, to continue to improve the experience for both developers and end users.

Microsoft will present its first paper on DirectX 12, its next-generation multimedia API, at the Game Developers Conference (GDC), on the 20th of March, 2013. The event could include presentations by NVIDIA, AMD, Intel, and Qualcomm. It's not clear at this point if Microsoft will release developer tools and resources on that day, or simply outline the API to spur interest. If anything, it should gently nudge today's GPU manufacturers to make their future GPU designs ready for the API. There are currently no GPU families that we know of, which support DirectX 12. AMD's current Graphics CoreNext 2.0 GPUs, such as the Radeon R9 290X, support DirectX 11.2, while NVIDIA's "Maxwell" GPUs, such as the GeForce GTX 750 Ti, feature an identical API feature-level support to their "Kepler" predecessors.