Quote from: Vann on March 11, 2018, 07:32:52 PM

Quote from: ildotoress on March 11, 2018, 06:30:51 PM

Quote from: Vann on March 11, 2018, 05:25:23 PM

The current AMD drivers in compute mode are optimized for Windows 10 v1709 FCU. Those are the fastest drivers to use with RX 570/580 cards. The only reason to use the blockchain drivers on Windows v1709 with RX 570/580's is some old miners like SGminer don't work with the latest drivers.

In my experience, in what mining is concerned, the Beta Blockchain drivers are identical to all new drivers. No speed difference whatsoever.
If someone has proof otherwise please come forward.

I have a six card RX 570/580 rig with dual boot Windows 10 v1709 partitions. The latest Adrenaline drivers on one and the Aug 23rd blockchain drivers on the other, so I can run older miners that are not compatible with the current drivers if I need to. Using the same settings for both, in addition to the blockchain drivers being noticeably slower by 3-4 MH/s, they have frequent drops in hash rate and issues with Windows as well. The AMD blockchain drivers came out before the Windows 10 v1709 FCU and are NOT supported. The v1709 FCU was a major update to how Windows interacts with GPU's and also expanding the previous GPU limit from 8 to 13, which is why AMD had to release new drivers that were compatible with the FCU.

The bold part is factually incorrect. As I have multiple miners on anniversary edition (ver 1607 build 14393.0 )
The key to 12 GPUs is the driver version, if I remember correctly it's about 17.10.1 when 8+ GPUs became supported.
As for the "blockchain drivers" - it doesn't support over 8 AMD GPUs, somewhat less stable and possibly has some issues with driver api