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Best BIOS ROM for Sapphire Nitro+ RX 470 8GB OC Samsung Memory 29-30 Mh/s

In the last days i created 3 (or 4) mining rigs with Sapphire Nitro+ RX 470 8GB OC version (still 3 more to be build), i was able to get a max 30.1 Mh/s (something like that), but not that stable when plugged in all cards.

Looks like the Nitro+ RX 470 8GB OC is also good and stable same as the Nitro+ RX 470 4GB OC video card, the best spot for this cards was 29.4 Mh/s on Ethereum and 700 Mh/s on Decred.

As you know i prefer Claymore’s Dual Ethereum miner with -dcri 23/24, a 6x mining rig will get a total of 175 – 176 Mh/s.

This is the exact GPU used for this tutorial

Here are my results

And once again was almost impossible to hold the each card at 30 Mh/s speed, had to lower a bit for stability. In images you can see the best i could get on 3 rigs of Sapphire Nitro+ RX 470 8GB. OC

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Here is what you should do to get there!

Tools and software used

1 Preparing the RIG, GPUs and Windows

  • If you have a different Driver version than 16.9.1 or 16.9.2 use DDU to completely uninstall your current drivers and install 16.9.1
  • Make sure you reset clock settings to default
  • Shutdown the rig
  • Connect only one GPU
  • Power on the rig
2 Backup Original Bios

  • Extract atiflash to C:\atiflash
  • Run ATIWinflash.exe as administrator
  • Click Save button to backup the bios, save all bios in separated folders
  • Close atiflash
3 Flash Modded Bios ROM

New Version updated on February 21, 2018

Download BIOS

V1 1625 timings (1150/2100) https://mega.nz/#!gopzAZxb!ztRySC1NNXXR9ZNUAb_wRhmqoFmn4S4ZXoQKGlUIDx4

You can also try cloks like 1130/2150 , depends on each card

V2 1750 timings (1150/2150) https://mega.nz/#!t4pShKjA!mD8cqvyxDgIgvNQpsdr3zzDudfhoGlp2UbyStJ9Qg_U

I prefer this version, is more stable and the cards perform better with it, try both and decide which one to use 🙂

  • Copy the BIOS to C:\atiflash folder
  • Run ATIWinflash.exe as administrator
  • Click Load Image and select the BIOS you just copied to atiflash root folder
  • Click Program button and wait for about 1 minute
  • Restart the rig when asking
  • Test with Claymore on Ethereum only using -benchmark 1, then test it with dual mining without -benchmark 1
  • Repeat the same process with all the GPUs

Before to continue further, please share this 🙂 thanks!

Like i said, V2 seems to be the one to go with, i was able to set 95% of the GPUs having the same cloks with no problem!

GPU Clock: 1150
Memory Clock: 2150
-mV: -100
Power usage GPU-z: 91w
Power usage from wall: 125w

Some of the rigs done with this GPU

Let me know what are your results with this rom 🙂

Disclaimer: This is not financial advise, I am not a financial advisor, this is for educational purposes only. If you want to invest in cryptocurrency please do your own research and invest at your own risk, 1stMiningRig is never liable for any decisions you make. 1stMiningRig may receive donations or sponsorships in association with certain content creation. 1stMiningRig may receive compensation when affiliate/referral links are used.
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