Anyone experience with R9 380 ? I have 6 cards ( Sapphire Nitro and MSI ) and I dont know what`s wrong with bioses. I see on forum, people who get 25 mh/s on ETH with this cards.

I use hex editor and I copy string from 1500 MHz and put on 1625 MHz and 1750 MHz ... no success !
After that, I found some strings on "google" and I test few ... I found only one who works fine with Elpida and Hynix memory ( about +2 mh/s )

Stock 1500 Mhz string : 77 71 33 20 00 00 00 00 CE 51 6A 3D 90 55 11 12 30 96 49 09 00 4A E6 00 22 33 9D 08 74 01 14 20 6A 89 00 A0 02 00 31 20 15 0F 29 2F 94 27 31 16
New string : 77 71 33 20 00 00 00 00 CE CD 59 39 80 55 11 11 2E 15 89 08 00 48 C6 00 22 33 9D 08 6C 00 14 20 6A 89 00 A0 02 00 31 20 14 0F 26 2B 88 25 2F 15


OS : ethOS
Miner : sgminer
Stock bios : 18 mh/s ( ETH only )
Moded bios : 21-22 mh/s ( ETH only )
OC Settings : Sapphire card ( core 1140 and mem 1715 ) - 22.37 mh/s ; and MSI card ( core 1120 and mem 1630 ) - 21.27 mh/s  ; and other more OC settings

Thanks dude, it works good yet my hashrate are still low. I guess i will have to reinstall properly my driver in order to have my hrate back to their level before Spectre update.


Best,

Bob

Try this, see if it works. -- MSIRX570W25X40_TEST_BIOS.rom

Thank you.  I was able to flash the gpus and now getting 27.5 mh/s which is better.  But now the miner shutdown and reboot the whole computer after 10-15 min runtime. So I flashed it back to the original bios which gives 24.5 mh/s.

Which program do you use to lower the memory clocks?  Do you mod the bios or use trixx, msi afterburner, wattman, overdriven?  What about adjusting the core voltage?

This "RX 550" is a rebranded RX460 with 6 disabled CU´s and slow RAM,unfortunatily not a Polaris 12 chip  .
But I try to unlock the CU´s:
http://www99.zippyshare.com/v/mz7hrmO5/file.html
If you try it, please report.
Good luck 

Why don't they make a 16gb card with 4x of these gfx894 chips, it could crush the vega and 1080ti?

Please, could anyone make me a modded bios for my Sapphire Pulse RX560 OC 4GB?
I dit not find anyone on the internet!

Stock rom: https://www.dropbox.com/s/wymi4rd51v5v85g/stock.rom?dl=0

Thanks you so much!

Max stable, check memory errors in HWinfo.
https://mining-bios.eu/guides-and-miners/bios-mod-faqs/

Try these out:

XFX_RX580_8GB_MINING_BIOS.rom

Sapphire_PULSE_RX580_4GB_MINING_BIOS.rom

Sapphire.Pulse.RX560.4GB_TEST_BIOS.rom

Asus.RX570.4096.170327_MINING_BIOS.rom