Overclocking headroom hasn't really changed, if anything it is reduced in relative terms since the out of the box frequency is now higher while the final achievable overclock frequency is roughly the same.
In past testing KitGuru achieved 1365MHz core and 1700MHz memory on the ASUS RX 470 Strix Gaming OC but with the RX 570 Strix Gaming OC the final stable clock was only 1340MHz on the core, 25 MHz less, while the memory (now using higher-rated Elpida chips instead of SK Hynix) achieved 2025MHz instead of 1700MHz.
The real gain in 3D performance from overclocking, using 3DMark as a guide, was 5.25%.
Well AMD… https://uploads.disquscdn.com/images/391b049c1e1753b69970b6cfd66cd81ceb1593cec805f6fb20b18af365a9b680.jpg
Hey Ryan, mind sharing the bios for this card? Can be dumped/submitted using gpu-z. Thanks