Are there any GPU's that support HEVC yet?

[SeeMoreDigital]

I guess the topic title says most of it ;)

If so, at what frame rates and chroma sub-sampling?

[LoRd_MuldeR]

As as far as hardware decoding is concerned, Nvidia's current "Maxwell" generation doesn't yet. Well, at least not fully:
First generation Maxwell GM107/GM108 provides few consumer-facing additional features; Nvidia instead focused on power efficiency. Nvidia's video encoder, NVENC, is 1.5 to 2 times faster than on Kepler-based GPUs meaning it can encode video at 6 to 8 times playback speed. Nvidia also claims an 8 to 10 times performance increase in PureVideo Feature Set E video decoding due to the video decoder cache paired with increases in memory efficiency. However, H.265 is not supported for full hardware decoding, relying on a mix of hardware and software decoding. When decoding video, a new low power state "GC5" is used on Maxwell GPUs to conserve power

http://en.wikipedia.org/wiki/GeForce_800_series#Architecture

[foxyshadis]

Intel also has its HEVC DXVA in the latest stable drivers (gone from all subsequent beta drivers, don't be surprised if it's not in next stable), Strongene/Lentoid and Cyberlink both have OpenCL decoders that are optimized for AMD but apparently work on other GPUs. Basically they all use OpenCL or some proprietary link to the GPU, definitely not fixed-function hardware. Expect that in 2016.

[writersblock29]

@SeeMoreDigital

There is progress being made on the hardware decoding front, however:

http://www.design-reuse.com/news/34708/real-time-h-265-hevc-video-decoder-core-cast.html

I know it's not exactly what was being asked for, but it's signs that the road crew is doing more than leaning on shovels.

AMD's APUs are still in development for H265 GPU support, so if HTPC usage is what you have in mind, they'll be another manufacturer to keep your eye on.