How much faster will my 4K editing/encoding become with Avid Artist | DNxIO hardware encoder ?

[LimitBreak]

Anyone with experience using such hardware and Avid ?

http://www.avidblogs.com/simplify-4k-and-save-400-on-avid-artist-dnxio-hardware/?mkt_tok=3RkMMJWWfF9wsRohsqvPZKXonjHpfsX%2F7OouUKS1lMI%2F0ER3fOvrPUfGjI4DTcFgM6%2BTFAwTG5toziV8R7HBJc133M8QXRbk

What is the workflow for using this hardware, and how much faster or easier will 4k editing and encoding be ? wouldn't a more expensive dual xeon workstation be a better upgrade option ?

It's $2,999.00 for the hardware + avid media composer academic, is it worth it ?