Once you have some errors lower clocks a bit until there are no new errors. These clocks should be stable
After you find the best memory clocks you can set core clocks (overclock or underclock) then you can try lowering voltages.http://www.pcworld.com/article/250644/how_to_overclock_your_graphics_card.htmlHWinfo - find your GPU and the GPU memory errors line. Watch it for numbers. If there are any after few minutes your memory clock is too high. If you have few errors after hours it's no problem. But key is to have 0 errors. Memory errors can cause bad shares and may end up with BSOD
Some recommended clocks and voltages for RX cards - each card is different this is only for approx values!
Go to Lost License and insert your e-mail, system will then send your license.
All of these bios have undervolted core and memory (VDDCI), but only a bit for stability with all cards, most of them also have memory OC. All bios use performance timings or Pro performance timings. You can find most of the performance timings in my Bitcointalk guide, those Pro performance timings have higher hashrate and they are not listed in my guide. You can get them only if you have my Premium pack, Pro peformance timings bios or in PBE 2.0.