Anandtech published The Radeon R9 290X
A quote from the article:
Launching today is AMD's Radeon R9 290X. The 290X is not only the fastest card in AMDs 200 series lineup, but the 290 series in particular also contains the only new GPU in AMDs latest generation of video cards. Dubbed Hawaii, with the 290 series AMD is looking to have their second wind between manufacturing node launches. By taking what they learned from Tahiti and building a refined GPU against a much more mature 28nm process something that also opens the door to a less conservative design AMD has been able to build a bigger, better Tahiti that continues down the path laid out by their Graphics Core Next architecture while bringing some new features to the family.The Radeon R9 290X Review @ Anandtech