If you have Sapphire Pulse RX580 8Gb with Hynix Memory yes

RX580 Sapphire Nitro+ 8GB Hynix at 1150 Mhz Core and 2150 Memory and Voltage -75mv - Trixx
RX580 Sapphire Pulse 8GB Hynix at 1150 Mhz Core and 2150 Memory and Voltage -75mv - Trixx

Maybe not all cards can be undervolted -75mv OR maybe more then -75mv

Strap copied to 2:1750, 2:2000, 2:2250:
777000000000000022AA1C00B56A6D46C0551017BE8E060C006AE6000C081420EA8900AB0300000 01B162C31C0313F17
here is a blank, check you copy all without the blank (forum changes it?)

ETH: 30.1 - 30.3   -   100% Stable, 0 Errors, about 2 weeks



Long time i tried bios mods and many other memory straps, this one is the only working flawless with 30 MHs.
Other straps got me lower MH on memory overclock or blackscreens and artefacts