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You can compare various codecs: HEVS (x265), VP9 and the latest Daala build) at:

https://arewecompressedyet.com/?r%5B%5D=x265_1.6_ntt-short-1...

The results vary wildly depending on test clips, the metrics used and bit-rates, so an accurate comparison is quite difficult to do

This is the progress for the past year:

https://arewecompressedyet.com/?r[]=master-2016-01-01-082473...

Select "Entire curve (old method)" to see BD-rate numbers (the new method requires data overlap in all three bitrate ranges in order to work, which the old curve does not have).

TL;DR: It is now slightly better than x264, but quite far from x265, as measured by SSIM.

There was a talk on it a while ago at a VideoLan conference: https://www.youtube.com/watch?v=g7fVwIZBW8Q

Will Daala have hw acceleration?

Since we're already seeing acceleration for VPx, it's likely chips will start implementing it some time after it's ready.