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

Ciprian V. | May 12, 2017 | BIOS, GPUs, How to, Mining Hardware, Tutorials | 71 Comments

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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

Sapphire Radeon NITRO+ Rx 470 8GB GDDR5 Dual HDMI / DVI-D / Dual DP OC w/ backplate (UEFI) PCI-E Graphics Card Graphics Cards 11256-02-20G

List Price:$219.99

Price:$219.99

Price Disclaimer

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

Windows 10 PRO 64 http://amzn.to/2mG447M
~~AMD Drivers 16.9.1 download here~~ Radeon Software Crimson ReLive Edition Beta for Blockchain Compute
ATIflash download here
Claymore’s Dual Ethereum AMD+NVIDIA GPU Miner v9.3 (Windows/Linux) download here
Sapphire Trixx download here
Windows 10 tweaks for mining: tutorial here
Display Driver Uninstaller (DDU) download here

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

29.5 Mh/s – 30.1 Mh/s

512KB: https://mega.nz/#!gxZn1YZK!9tNNrW6mh2fS1-hOT7MbhubrDsS2-crZRdGuSpfOifc
Clocks 1200 / 2050 or 2025
-cvddc 850 -mvddc 900 or 950
-dcri 23

sapphire rx 470 8gb samsung memory bios ethereum dual mining decred hashrate

rx 470 8gb mining rig ethereum dual mining decred

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