I have different brands of 570, 580 and 1070 on a single rig. How do I over clock them? On HiveOS, under the rig detail tab, there is only one OC profile for AMD and one OC for Nvidia. But when I go to Other Users Settings, I see OC settings for specific 580, 570, etc. and not a mix. Any suggestion or recommendation is greatly appreciated. Right now, out-of-the-box, my 570 give me 16-18 MHz, 580 gives 15 MHz, and 1070 TI gives 22 MHz for ethash. I would think my 580 can do better than my 570. Furthermore, I heard people do get in the high 20’s to 30. Thanks!
Maybe MH/s inststead MHz 
Overclocking AMD and NVidia cards makes by different ways. You can find “AMD OC” and “NVidia OC” buttons under web rig control panel.
My recommendations to you will be watch video and read some related topics about OC.
Just for example
Good Catch, HaloGenius! And thanks for the link.
As far as I know, overclocking does not apply to mixed gpu on the same rig. Please comment if it is successful.
[quote=“HaloGenius;2369”]Maybe MH/s inststead MHz
Overclocking AMD and NVidia cards makes by different ways. You can find “AMD OC” and “NVidia OC” buttons under web rig control panel.
My recommendations to you will be watch video and read some related topics about OC.
Just for example
https://youtu.be/i4j5-hMg5RM[/quote]
So I have seen where there are two different ways to set the memory clock. Not sure what is best.
One way was to go above the current setting like so 25 = 25mhz above current setting.
Other way was to seti t like so 1350 = 1350mhz.
What way works the best, as I did the amdovc command 
Adapter 0: Device 67ef
Core: 1175 MHz, Mem: 1900 MHz, CoreOD: 0, MemOD: 0, Load: 100%, Temp: 64 C, Fan: 18.8235%
Core clocks: 214 603 958 1060 1175 1116 1156 1196
Memory Clocks: 300 625 1900
If I set the core to 1350 and the mem to 2150, it runs for like 2 minutes,then crashes. Guess I need to continue to drop it a little at a time testing.
Need guidance, watched as many youtubes as possible, still unsure.