Hello,
first I want to thank you for your hard work, you have done this very good software.
A few days ago I transferred a lot of my mining rings and I am very pleased with the results so far.
I have difficulty and I would like advice on how to achieve a better results with Saphire RX580 8GB Hynix.
What I have done so far:
1. I did tests with several types of BIOS: custom straps for Hynix whit nice result in ETH, one click BIOS from SRBPolarisV3.5 and PolarisBiosEditor1.6.7
2. I have used configurations 8+8, 8+7, 7+7, 15+15, 16+14
3. My settings are: core 1250/900mV and memory 2250/920mV with no hardware errors
In all cases my best results are 900H/s.
Thanks in advance!
Try a trick of mine it works on all my rx570/580 and they are above 1khs.
Once miner starts reset the perimeters on your card. Then just change core clock as high as you can vo stable and as low voltage as you can. Dont even bother with memory clock.
I have found changing memory clock does jack shit. I leave it at stock 1750 and lower voltage thats it.
All my rx570/580 get 1050-1100 hashes with stock memory clock. And between 1280-1340 core.
Vega is a different story though.
Core clock and voltage can be updated live (while GPU is under load.) Mem clock cannot. This is why changing your mem clock doesn't do anything for you, because you're not actually changing it - check the actual clock in HWInfo64. Despite TRM having placed increased importance on core speeds, mem clock is extremely important for CN mining - more so than core, when comparing clock-for-clock increases and what they do for hashrate. The problem is that mem clock increases are more tricky, due to dependence on timings, controller speed/voltages, etc. I have found ideal mem clocks for 580s to range between 2000 and 2250+ depending on mem mfg (and of course which straps you use.)
As for your 'trick', it's addressing the fact that for some reason, power state settings are sometimes not fully honored when load is first applied, but if those same settings are reapplied under load, they stick. This method can be usefule for initial tuning, but once you find the proper clock/voltage values, simply write them into a PPT, and it will accomplish the same thing.
This not whats happening in my case.
I have started the cards with higher mem clocks and lower mem clocks on my rx cards and acheive the same speed. I have checked in hwinfo to see actual clock on memory. Resetting while under load bumps the speed.
Might hard code the settings I want in bios.
Vegas I do not have this issue. I change everything real time under load and changes happen (as per hwinfo also). Already have PPT table down for vegas. It is nice to change clocks for different algos.