Quote from: antiycda on August 21, 2017, 01:13:06 AM

Quote from: panosarp on August 20, 2017, 06:01:39 AM

The official AMD blockchain driver for windows 7 x64 does not work (miners crash).
The leaked driver from robinh00d works but nothing can undervolt my RX570's, only OverdriveNTool works for a few seconds before reverting.

The solution that worked best is to use the leaked driver and the wattman from the official driver:

1. Install the official amd driver with amd settings
2. Without reboot install the leaked driver via device manager by going the "i have a disk" route (for all cards - one by one)
3. If you have a modified bios, run atikmdag-patcher and reboot
4. Use wattman to apply your mem clock and volt settings
5. Open miner, everything will be ok except undervolt, now with miner running make a small change to wattman and reapply (for each card one by one)

The voltages appear to be sticking for as long as the miner is running , except for the main card that reverts occasionally.

everything is works now. except the power with eth+SC almost sucks 140W.

Using OverdriveNTool from here: https://forums.guru3d.com/threads/overdriventool-tool-for-amd-polaris-gpus.416116
you can disable all power states except P7 for gpu and P2 for memory, that way the undervolt will be retained since gpu will always be at the highest performance state
and never throttle down.
The cards will consume more power when idle that way but for a mining ring that is irrelevant.