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

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

2017-05-09 10.28.02 2017-04-25 22.55.34 IMG-20170425-WA0011 2017-05-09 18.53.13

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
• 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

• Download BIOS roms

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

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

sapphire nitro+ rx 470 8gb oc ethereum mining overclock sapphire nitro+ rx 470 8gb oc gpu z sapphire nitro+ rx 470 8gb oc gpuz power draw sapphire nitro+ rx 470 8gb oc ethereum mining hashrate

Some of the rigs done with this GPU

sapphire nitro+ rx 470 8gb oc ethereum mining rig 1 sapphire nitro+ rx 470 8gb oc ethereum mining rig 2 sapphire nitro+ rx 470 8gb oc ethereum mining rig 3 sapphire nitro+ rx 470 8gb oc ethereum mining rig 4 sapphire nitro+ rx 470 8gb oc ethereum mining rig 5 sapphire nitro+ rx 470 8gb oc ethereum mining rig 6

Let me know what are your results with this rom

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