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Best BIOS ROM for Sapphire RX 470 8GB Mining Edition with Samsung Memory 29 – 30 MH/s

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Hello and welcome to my tutorial on how to make a Sapphire RX 470 8GB Mining Edition (ME) hash 29 – 30 MH/s. I have reviewed the card some time ago – you can click here to know more about the specs, pricing and other aspects of the card.

This is my first BIOS and mining performance test of a mining edition GPU.

I’m really excited about this guide because I have found the exact steps on how to make the card hash properly and I will be sharing all of them with you right now.

If you liked this guide, you might also be interested in my 570 8GB mining edition GPU one. I will be posting it soon, so stay tuned.

What You Will Find In This Guide

Do you have trouble configuring your Sapphire RX 470 8GB ME? Do you feel depressed because your card fails to hash properly? Are you considering selling it because it simply refuses to work? I know how you feel. Luckily enough, I have discovered the needed steps to make my Sapphire hash normally. It took me a lot of research and trial and error; I have made this tutorial so you don’t have to reinvent the wheel.

The trick is to find the right BIOS version and spice it up with the right clocks. I have managed to make hash properly each of my four Sapphire RX 470 8GB ME. Hashrate is stable so far, as well as power consumption.

To receive the latest updates follow me on social media! 🙂

Before we start with the guide, I’d want to mention that Sapphire RX 470 8GB ME have some sort of design issue that makes them hard to set up for mining. Since other people are apparently facing the same exact problems, I’ve thought that I’d start this guide with some troubleshooting.

If you are like me, you will encounter one or more of the following bugs along the way. Therefore, I thought it would be a good idea to inform you on the potential problems you might face and provide you with the adequate solutions.

Note: The Sapphire RX 470 8GB Mining Edition I am using have Samsung memory – this bios wont work with Hynix memory chip manufacturer.

recommended mining rig hardware

Problems and Fixes

I will update this list with more problems and solutions soon.

  • GPU not recognized by atiflash
    1. Uninstall drivers with latest version of DDU in safe mode.
    2. Install latest mining edition drivers
    3. Download latest Atiflash 2.77 and try again
    4. Also try to backup via CMD and apply the patch
  • Exclamation mark in device manager after rig reboot
    1. Apply the patch and restart
  • Flashing BIOS error message
    1. If you get that while trying to flash the bios via atiflash gui, try again via CMD with –f –p
    2. If you still get the same error message switch BIOS jumpers to the other side and try again (you can do it without restarting the rig)
  • Empty Backup BIOS – 0 KB BIOS Size
    1. For some reason, the silent BIOS version that was saved by atiflash resulted in a 0 KB file. I was able to backup it with GPUz and getting a full-sized back-up with a size of 256 KB. You can also try to backup via CMD using –s command (I missed that)
  • Claymore no AMD or CUDA GPU detected
    1. Apply the patch and restart the rig
Software and Tools used for this tutorial

As you already know, the card offers 4 BIOS versions to choose from (Quad UEFI BIOS). Here is how this works, according to the manufacturer:

  • BIOS #1 (default mode) has the maximum performance
  • BIOS #2 is called ‘Efficiency’ and in theory it should make the GPU consume less power and consequently output lower hashrate
  • BIOS #3 and #4 another two BIOS set like the efficiency one.

I have tried all of them and I wasn’t able to get more than 27 MH/s. In fact, there were times I was getting only 23 MH/s. Yeah, I know… you can express your condolences in the comment section. Fun fact is that power consumption always remains the same, no matter which one of the four BIOSes you choose.

Stock BIOS Hashrate Performance
  • BIOS #1: 27 Mh/s (download)
  • BIOS #2: 24 Mh/s (download)
  • BIOS #3: 27 Mh/s (download)
  • BIOS #4: Error :/ (download)

How to Make the Rig Work without the GPU Display Adapter

Mining edition GPUs come with no display adapters to reduce costs. In on order to have an image on your monitor, you’ll have to connect an HDMI cable directly to the motherboard. Then, you’ll have to do a couple BIOS modifications and you’re set. Let’s review the steps in detail:

(In my case, I am using an AsRock H81 PRO BTC R2.0)

  • Access Motherboard BIOS
  • Go to Advanced tab, then Chipset Configuration
  • On Primary Graphics Adapter choose “Onboard
  • Save changes and exit
  • Now you are able to have display via the motherboard. The thing is that if you open MSI Afterburner, you will notice that “Core Voltage (mV)” is frozen and cannot be changed. Here’s what you do to fix that:
  • First make sure MSI Afterburner is closed; go to “Device manager”, dropdown Display Adapters, right click on “Microsoft Basic Display Adapter” and disable it. Now, start MSI Afterburner; if you still see the voltage frozen then you probably forgot to unlock it in the settings. Simply go to Settings -> General tab and check “Unlock Voltage Control” and “Unlock Voltage Monitoring” boxes.
  • That’s it; now let’s move on to the next steps
Flashing the BIOS

Since this card has two BIOS switches with 4 BIOS versions, I had to test each of them to achieve the best results. If you try each of the versions on default settings, you will not achieve more than 28 MH/s. You can test it on your own if you want to.

This is why we have to flash it to achieve better results. Important Note: I have modded the Efficiency Setting BIOS. This means that before flashing it you will have to toggle both bios switches down and restart the rig

1 Back Up the BIOS

Before flashing the new BIOS, I recommend you to back up the original one first.

  • If you don’t know how to do it follow point 2 from my previous tutorial: click here
2 Download Modded BIOS for Sapphire RX 470 8GB Mining Edition



3 Flashing

VERY IMPORTANT: Always extract ATIflash to C:/atiflash folder and place the ROM file that needs to be flashed in the same directory

If you need help, follow point 5 from my previous tutorial or check the following video: click here

Before to continue further, please share this 🙂 thanks!

My results with this BIOS ROM

Sapphire RX 470 8GB Mining Edition – Mining Performance Stock Clocks (Samsung Memory)

System power draw is 50W


RX 470 8GB Mining Edition Ethereum (Ethash) Mining Hashrate Performance & Power Consumption

Ethereum Only

Same settings can be applied and the results will be the same if you want to mine any coin that runs on Ethash Algorithm like Ethereum Classic (ETC), Ubiq (UBQ), Expanse (EXP), Soilcoin (SOIL) etc..

MSI Afterburner 30 MH/s

  • Clocks 1130/2150
  • Core Voltage -96mV
  • GPU-Z 85w
  • From wall 120w

start.bat file for Ethereum only with claymore clocks and voltage: EthDcrMiner64.exe -epool -ewal ETHEREUM_WALLET.WORKER_NAME -epsw x -tstop 85 -tt 65 -fanmin 75 -fanmax 100 -cclock 1150 -mclock 2150 -cvddc 850 -mvddc 875 –dcri 5


Ethereum Dual Mining Decred and Siacoin

I only used .bat commands to overclock the cards

Ethereum 29.950 Mh/s – Decred 630 Mh/s

Ethereum 28.200 MH/s – Siacoin 400 Mh/s

start.bat file for ethereum dual decred with claymore clocks and voltage: EthDcrMiner64.exe -epool -ewal ETHEREUM_WALLET.WORKER_NAME -epsw x -dpool -dwal SUPRNOVA_USER.WORKER_NAME -dpsw WORKER_PASS -tstop 85 -tt 65 -fanmin 75 -fanmax 100 -cclock 1130 -mclock 2150 -cvddc 850 -mvddc 875 -dcri 5

start.bat file for ethereum dual siacoin with claymore clocks and voltage: EthDcrMiner64.exe -epool -ewal ETHEREUM_WALLET.WORKER_NAME -epsw x -dpool stratum+tcp:// -dwal SIA_WALLET.WORKER_NAME -dcoin sia -tstop 85 -tt 65 -fanmin 75 -fanmax 100 -cclock 1130 -mclock 2150 -cvddc 850 -mvddc 875 -dcri 20

RX 470 8GB Mining Edition ZCash (Equihash) Mining Hashrate Performance & Power Consumption

You get the same results and power consumption for the following coins running on Equihash algorithm: Zencash (ZEN), Zclassic (ZCL), Hush (HUSH), Komodo (KMD)

Download and extract Claymore ZCash Miner:

Claymore Miner ZCash Hashrate 278 H/s – 300 H/s

start.bat file for ZCash (ZEC): ZecMiner64.exe -zpool -zwal ZCASH_WALLET.WORKER_NAME -zpsw x -tstop 85 -tt 65 -fanmin 75 -fanmax 100 -cclock 1130 -mclock 2150 -cvddc 850 -mvddc 875

The bios is not really optmized for ZCash, maybe i will work something soon..

RX 470 8GB Mining Edition Monero (CryptoNight) Mining Hashrate Performance & Power Consumption

Once again, the same procedure can be applied to mine CryptoNight Algorithm coins like Karbowanec (KRB), Bytecoin (BCN), Sumokoin (SUMO), DigitalNote (XDN)

Download and extract Claymore’s CryptoNote GPU Miner:!e4JVEAIJ!l1iF4z10fMyJzY5-LnyC2A

In this case, for some reason I wasn’t able to set the clocks via .bat file and I had to split the commands. I set the clocks to 1130/2150, undervolted the GPU to -100mV via MSI Afterburner and added –mvddc 900 to the .bat file.

MSI Afterburne / Claymore 760 H/s

  • Clocks 1130/2150
  • Core Voltage -96mV –mvddc 900
  • GPU-Z 80w
  • From wall 100w

start.bat file for Monero (XMR): ZecMiner64.exe -zpool -zwal ZCASH_WALLET.WORKER_NAME.WORKER_NEM -zpsw x -tstop 85 -tt 65 -fanmin 75 -fanmax 100 -cclock 1130 -mclock 2150 -cvddc 850 -mvddc 875

In Conclusion

It took me a lot of work and time to come up with the mentioned steps. Hopefully, this tutorial saved you a lot of time. I have tried to make it an easy read and as beginner-friendly as possible. Please leave me a comment if you have any questions or suggestions, I highly appreciate your feedback.

Thank you for reading. As always, your comments, suggestions and questions are welcome.

Subscribe and stay tuned for further updates!

Found this useful? Buy me a beer 🙂


ETH: 0x8a159cc27454130ee4880504f4d2afe2ebb22d15

BTC: 3DWC5xaaapSRmccAvv12dF3nsRYqx3Y1YM

ZEC: t1T9dLLM14Jh6NNuCPfNsRgGnj58LkT3yYX

  • andrian suryadinata

    hi, can use for 8gb hynix memory?

    • Stoica Vlad

      I think not

    • No, ill post tomorrow the one for hynix memory

      • Robert Gzivna

        hello, im waiting for the bios 🙂 still working on it? im looking for custom straps as i already copy paste 1500-2000, but want more:)
        also samsung 4gb version will be good too

    • Mark

      +1 – thanks Ciprian!

      • still working on it 🙂 bios ready.. will post the article later

  • Odina Uchiha

    or better buy some rx 470 4 gb minning ver? the price is about 70-80 usd lower? l saw 2 version on eshop rx 470 8gb mining , but the price is different ,1 is cost about 375 usd and the second is 345 $ ,( same parameter) maybe the first 1 is samsung memory?

  • Ed Stewart

    Is this only good for the ME version? I have Nitro+ 8gb Samsung memory but sounds like this won’t work?

    • I guess it should work with the Nitro+ too.. because i combined the timings from this card 🙂 give it a try and let me know.

  • Rodolfo Mattei

    can u pls do with 4gb mining edition with hynix memory ????

  • Erik Lensherr

    Hi there, any news for Hynix bios? For me 1500 straps to 1750, 2000, doesn’t do miracle:(

    • working on it.. will be posted tomorrow..

      • Erik Lensherr

        You are the best!

  • andika cahya

    can i apply this with my RX 470 4gb power color mining edition elpida memory?

    • nope.

      • andika cahya

        is there any how that you make tutorial for that as well? many thanks

      • andika cahya

        can you do teamviewer for my cards? i have problem with the power draw. my 470 hynix gaming edition only 60-65 in gpuz. but this new 470 elpida mining edition brown box draw like 80-85 in gpuz. and its already undervolt use MSI AB.

  • Roberto

    You write some very good and detailed articles! Very informative. Kudos!

    Do you also have plans to create such a guide for the Sapphire RX470 4GB Mining Edition cards? I have the Elpida (7x) and Hynix (2x) versions. I have seen them do 30Mh but couldn’t get them stable (also because of insufficient time).

  • Alex

    Thanks for the article, really good and did bump up my hashrate to ~25Mh, any idea how i can get the remaining 5Mh? I think the only difference between my setup and yours is the mobo and that i’m using EthMiner to mine, not Claymore.

  • bezo

    hey, I have a msi armor oc rx 470 8gb samsung , I tried changing the straps and it doesnt work. any advice on it ? currently getting 20 to 21 mhs.

    • what memory ?

      • bezo

        Samsung memory

        • what straps have you copied? can you send me both original and modified bios versions?

  • Luis Liao

    Hi Ciprian, there are 2 Modded Bios file to download, V1 and V2. Whats the difference between the two Bios???

    • Go with the first one, both should do the same, v2 can consume a little bit more than v1.

  • Pavel Isaenkov

    On my Sapphire RX 470 8GB Mining Edition your BIOS did not work. A map in the device manager with a yellow exclamation point. What could be the problem?
    How did you set the timings? At what frequency did you copy the values?

    Found a solution: Apply ATImdag Patcher.
    Got 27.6Mh without MSI Afterburner and Claymore tuning.
    The result of ZEC is better on the stock BIOS – 284 hash.
    Thank you for the article

  • Eshko

    Hello Ciprian,
    I have 6x Sapphire Rx 470 8GB Nitro+ and 3x Sapphire Rx 480 8GB Nitro+ all with Samsung memory.
    What is your advice for best performance on undervolting and overclocking these cards? Can I use this tutorial on them? Thank you for all your help.

  • Pavel Isaenkov

    How to fix incorrect share?
    A line appears:
    GPU # 1 got the incorrect share. If you see this warning often, make sure you did not overclock it too much!

    • Abo Mourad

      are you fix it same problem to me

      • lower undervolt or mem clock!

      • Pavel Isaenkov

        I solved the problem this way.
        I set -cclock 1130 and kept the temperature no higher than 55 (or lower) degrees. It worked 12 hours without problems.

        • Abo Mourad

          can you send me command line claymore you use plz

          • Pavel Isaenkov

            My setting:
            EthDcrMiner64.exe -epool…:3353
            -ewal BITCOIN_WALLET.WORKER_NAME -epsw x -esm 3 -allpools 1 -estale 0
            -tstop 85 -tt 40 -fanmin 40 -fanmax 40 -cclock 1150 -mclock 2150 -cvddc
            850 -mvddc 875 -dcri 5

  • Abo Mourad

    good but my hash rate 27 only eth

    • lowered dcri ?

      • Abo Mourad

        thanks can you help me at rx460 bois plz

  • Abo Mourad

    when i set memory clock to 2150 error make sure you did not make overclock to match
    how can i solve

  • strelly


    Hi Ciprian, I’ve a Sapphire RX 470 OC 4Gb (reference) with Elpida RAM…could you tell me where I can find a BIOS mod? with stock BIOS performance is max 20 mh/s 🙁 thank you!

  • bryan biggers

    This BIOS works great! 30+MH/s with a single GPU. However, when I run two GPUs, the hash rate drops into the 28 MH/s per GPU range. Any idea why? I’m running your standard clocks and dcri. Thanks!

    • Try to disable from mining one by one and enable after 20 seconds.

      • bryan biggers

        How do you do that?


  • HEki


    i have sapphire rx 470 4gb mining edition samsung and getting 25.5MHs. I have achived this by only flashing the bios and using the mining drivers. Than i tried changing the cpu and mem speeds and undervolting the cards, but i can never get passed 25.5MHs. Everything i do makes the card drop MHs. Out of the wall my rig consumes 930w … which is far more than it should. I tried Twixx and AB beta 15 with no success 🙁 If i dont do anything with Twixx or AB, can i change clocs and undervolt it with the parameters in my miner bat file like you have? or i can only use those parameters when i change settings with Twixx or AB? I am new to this and every day i stumble up on a new trouble … 🙁 Anyone can help me out?


    • HEki

      Ok news on my setup. I managed to undervolt it in AB by -60, change the cpu speed to 1130 and now the powerdrain went from 930w to 740w. It has been runing at 25.5MHs per card for the past 4 hours. I managed to increase the mem speed to 1950 (not sure) and that pushed my 1gpu to 27MHs, but every other GPU dropped from 25.5MHs to 25MHs, so in total i lost 1MHs (i gain 1.5MHs and lost 2.5Mhs). Why arent other GPUs mining at 27MHs? I have check next to “use same settings for same GPUs”.

      But back to my 740w. i was looking in AB and my GPUs take from 70-75w. So that is 450w of total power for GPUs. Where are the other 300w coming from?? My mainboard?? That is insanly high! My baord uses 110w when it boots up and i dont start claymore minener. And i thought the max w mainboard will use is 200 at most ..

      I am not familiar with electricity so i might be going in the wrong direction with this, so could someone explain it to me?


      • Have you tried to set the clocks and undervolt from .bat file ?

        • HEki


          i have tried with this:
          EthDcrMiner64.exe -epool -ewal 0x6b.RIG1 -epsw x -mode 1 -ftime 10 -tstop 85 -tt 65 -fanmin 75 -fanmax 100 -cclock 1100 -mclock 1980 -cvddc 850 -mvddc 875 –dcri 5

          But the computer just frooze. The vents started to spin like crazy 😀

          How ever, i might have to do the bios mod again. I didnt know i have 4 bios options. After looking at your photos, i took a closer look and guess what … I have it to. So i guess i have to switch down, make a backup rom, moddify that rom by copying 1500 to 1625, 1750 and 2000.

          • try increasing cvddc to 875 or set them both to 900

        • HEki

          I have 1 more question. I see that you managed to undervolt your cards with AB with a value of -96mV, but in the .bat file you have -cvddc 850 -mvddc 875. I managed to do -60mV on my cards. What are the -cvddc and -mvddc values for -60mV? Is there a calculator for that? Thank you for your time!

          p.s. and you put both pins down for Efficiency Setting BIOS and you made a rom. Did you switch back to top right before you flash bios or you left switches on the bottom?

  • Stephan Katzensteiner

    Hello! Thx for your good detailed Tutorial!
    I brought my 6 RX470 Samsung 8GB to 30MH/s @60W GPU only!!!

    And i have sent you some ETH. Enjoy your BEER

    • Thank you @stephankatzensteiner:disqus , very much appreciated 🙂

  • HEki

    Hello Ciprian!

    i managed to get 6 out of 7 cards to run at 27.4. I have 470 4gb mining edition. You helped me out with a tip by disabling cards. 1 card doesnt go over 26.8, but that is ok!!

    Thank you so much!

    • I will have the bios soon.. i promise..

  • Avi

    Followed the steps but I am still at 23 MH/s on RX 470 8gb mining version with Samsung memory. Tried both bios though the V2 gives higher hashrate than V1. Anything else I should try?

    • What clocks did you used?

      • Avi

        1130/2150, 1150/2150, 1130/2200, 1150/2200

        • Avi

          Quick update: Redid DDU and install drivers again. Now I am getting 27.5 which is good.
          Any idea how to get more out of RX480 8gb samsung memory. Currently getting 26 MH/s

          • -dcri 4 or 3 or 5

          • Avi

            No dcri specified in start.bat … is it okay since I have different cards – 470, 480, 580 and Nvidia 1060?

          • The you will have to find the best dcri for each gpu like -dcri 4,3,5,35 etc 🙂

  • Kevin Lioenel

    Hi Ciprian,
    I already follow your instruction, its good for 4 GPU, but another two GPU is under 29
    My GPU is 6 RX470 8GB Samsung Chip

    GPU0 25.993 Mh/s, GPU1 30.208 Mh/s, GPU2 30.203 Mh/s, GPU3 18.855 Mh/s, GPU4 30.179 Mh/s, GPU5 30.215 Mh/s

    this is my claymore setting
    -epsw x -mode 1 -ftime 10 -tstop 85 -tt 65 -fanmin 20 -fanmax 100 -cclock 1150 -mclock 2150 -cvddc 850 -mvddc 875 -dcri 5

    and im using your mod V1

    may you please help me with this two card? GPU0 and GPU 3?

    My clock is 1130/2150

  • Albert

    best guide ever.I manage to get 27.5 MH/s from those cards.I wonder, if you can help me, with some modding for XFX Rx 470 8gb cards.After i have replace the 2000 strap with the 1750 one i get around 26.8 mh/s(hynix memory).Any chance for me, to get a higher hash rate?Thank you.

  • Kevin Lioenel

    Hi Ciprian, Is this normal?

    I already follow your instruction, its good for 4 GPU, but another two GPU is under 29
    My GPU is 6 RX470 8GB Samsung Chip

    GPU0 25.993 Mh/s, GPU1 30.208 Mh/s, GPU2 30.203 Mh/s, GPU3 18.855 Mh/s, GPU4 30.179 Mh/s, GPU5 30.215 Mh/s

    this is my claymore setting
    -epsw x -mode 1 -ftime 10 -tstop 85 -tt 65 -fanmin 20 -fanmax 100 -cclock 1150 -mclock 2150 -cvddc 850 -mvddc 875 -dcri 5

    and im using your mod V1

    may you please help me with this two card? GPU0 and GPU 3?

    My clock is 1130/2150

    • Try lower clocks for the ones with errors, try mem 2100.

  • Robert Marney

    Hi Ciprian, firstly thanks for this great tutorial. I tried it today and it was all going smoothly, but something went wrong when I tried to add the modded BIOS (V1 and later V2). I tried both versions but after reprogramming the claymore failed to see the GPU. Thankfully I followed your advice and did an original backup which i reloaded again using ati. All up and running again but still at 24 MH/s and no more. Did I load the incorrect BIOS? Thanks

    • Have you applied the patch ?

      • Robert Marney

        Hi there, You mean the DAG patch right? Do I just run that after loading each modded Bios to each card? If so I can go back and have another go. Thanks.

        • I mean the ati pixel patch!

          • Robert Marney

            Got it working. Thanks! All 6 cards now at 27.65 MH/s, and that’s without altering the voltage/clock speed. Cheers mate.

  • Ben Luis Sagulili

    There is a non-WHQL driver for AMD that removes the 8 GPU limit on windows. I am now currently running 10 GPUs but I cannot get to work it properly to mine with your modded BIOS.

    • Ben Luis Sagulili

      Ooooops I just did something wrong, 10 RX470 8GB mining edition now up and running at 30.5 MHs. Thanks for this wonderful tutorial.

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