Memory timings for AMD Radeon RX 470/480/570/580 Polaris series and firmware in MinerOS

It is no secret that in order to get the maximum hashrate and minimum power consumption of AMD Radeon RX polaris10 video cards, it is necessary to modify VBIOS, and then correctly overclock and downvolt each card in MinerOs operating system for mining. The straps tested by our experts for different types of video memory are posted in this article.

Disclaimer

  1. Straps may not have a positive effect on your card.
  2. Illiterate firmware can turn a card into a brick and a programmer hardware will be needed to restore the card to working.
  3. VBIOS firmware is done at your own peril and risk. The author does not bear any responsibility. If you do not understand what you are doing, do not alter BIOS!
  4. PhoenixMiner 4.9c miner was used in conjunction with the AMDMemTweak utility

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Micron (M32 memory):

777000000000000022AA1C00AD616C41B0551016320C86080060060004061420EA8940AA030000001012292EB22E3B16
777000000000000022AA1C00AD615C3CA0550F14308C1506006004007C041420CA8980A9020004C01712262B612B3715
777000000000000022AA1C00EF615C41B0551016BA0D96060060060004061420EA8940AA030004C01914292E692E3B16
777000000000000022AA1C0073626C41B0551016BA0D260B0060060004061420EA8940AA030000001914292EB22E3B16
777000000000000022AA1C0073626C41B0591016BACDC6090060060004061420EA8940AA030000001914292EAE2E3B16

Approximate overclocking: Kernel 1290 | Memory 2300 | Voltage 940-960 -> Ethash 35-35.5 Mh/s

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Samsung

000000000000000022CC1C00EF695D48E03110172ECB95090060060024001520FA8900A0030000000F10303A99262F16
777000000000000022CC1C00CEE55C46C0590E1532CD66090060070014051420FA8900A00300000012123442C3353C19
777000000000000022CC1C00AD615C41C0590E152ECC8608006007000B031420FA8900A00300000010122F3FBA354019

Approximate overclocking: Kernel 12910 | Memory 2200 | Voltage 870-920 -> Ethash 33-33.5 Mh/s

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Elpida

777000000000000022AA1C008C595B3CA0550F142C8C1506006004007C041420CA8980A9020004C01712262B612B3715
777000000000000022AA1C00315A5B36A0550F15B68C1506004082007C041420CA8980A9020004C01712262B612B3715

Approximate overclocking: Core 1168 | Memory 2070 | Voltage 870-920 -> Ethash 32-32.5 Mh/s

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Hynix

999000000000000022559D0010DE5B4480551312B74C450A00400600750414206A8900A00200312010112D34A42A3816
999000000000000022C39C00AC595A3D90550F123A0E4609004006007E0514206A8900A0020031201E0F292F94273116

Approximate overclocking: Core 1168 | Memory 2070 | Voltage 870-920 -> Ethash 32-32.5 Mh/s

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Instructions for firmware in MinerOS:

  1. Download software to modify VBIOS here
  2. Download BIOS on [Rig page -> Overclocking -> VBIOS], in the drop-down menu - Download.
  3. With the help of PolarisBiosEditor, we prescribe the strap corresponding to your memory in the last 2 lines of your BIOS. Save the resulting BIOS necessarily in a NEW file.
  4. We upload BIOS to the video card [Rig page -> Overclocking -> VBIOS], in the drop-down menu - Upload. Can be downloaded immediately to all cards. Try each strap on the list to find the best one for your card.
  5. After receiving a notification that BIOS is flashed, you need to restart MinerOS.
  6. After the rig has booted again, you need to try different overclockings and drive the card in different modes to find the optimal mode in which the minimum % of incorrect shares.
  7. You can return to the stock BIOS by repeating the above operation with the original BIOS saved.

 

VBIOS Editor

If you have any difficulties, visit our Telegram channel, and our friendly community will help you:

https://t.me/minerossupport