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
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 hereRadeon 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
- 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
- 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
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
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
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 🙂
Thank you for reading!
As always, your comments, questions, and suggestions are welcome. I'd love to hear about your own experiences!
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