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Author Topic: BIOS mod for RX 470 8GB MICRON that can do 25++MH?  (Read 240 times)
DevelopmentBank
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October 16, 2017, 02:37:09 AM
 #1

I have a GPU with the following specs:

Manufacturer: Sapphire
Model: RX 470 Nitro (NON +) 8GB
Memory: MICRON

I'm using the latest Polaris BIOS Editor that can edit the micron/elpida memory timing straps but even if i copy the 1500 all the way to 2000 strap, i only get a ETH mining hashrate of 24-25 MH. I'm also running it with 1190/2000 - core/mem clocks. I've been searching online and can't seem to find any BIOS mods that get it past that hashrate. Any tips?

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DevelopmentBank
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October 30, 2017, 04:38:42 AM
 #2

Bumping up this thread from a few weeks back.

Is there no one with BIOS mod experience for the same card?
Any help will be much appreciated. Would be a waste to sell this 8GB card.

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liomojo1
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October 30, 2017, 07:15:21 AM
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I have moded asus 470 8gb with micron and it gives me 27.7mgh using 1138/1954 using the latest polaris bios editor to edit the timings , you are good to go! Just remember never to put the card as a first one and attached to a monitor, cause it will freeze the machine when the miner stops and then started again. it will not gtive you memory errors , but it is restarts the machine when miner stops and starts. If you keep it away from a monitor it will hash forever with no problem!
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October 30, 2017, 07:46:21 AM
 #4

Gettin 28.9 - 29.4 depending on mem clocks in dual mode with LBC.

Need bios - contact me.

Also check your ASIC quality.

Otherwise - use 1750 straps and abt 2050 mem clock. 0.9V undervolt is fine with these cards.

Also check therm pads.
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October 30, 2017, 08:59:10 AM
 #5

I have moded asus 470 8gb with micron and it gives me 27.7mgh using 1138/1954 using the latest polaris bios editor to edit the timings , you are good to go! Just remember never to put the card as a first one and attached to a monitor, cause it will freeze the machine when the miner stops and then started again. it will not gtive you memory errors , but it is restarts the machine when miner stops and starts. If you keep it away from a monitor it will hash forever with no problem!

What straps are you using? And are you undervolting the card at all?
Will try yours but I tried using your clock settings and still getting 25MH at most. This is while using the 1600 straps, cvddc at 890, and mvddc at 920.


Gettin 28.9 - 29.4 depending on mem clocks in dual mode with LBC.

Need bios - contact me.

Also check your ASIC quality.

Otherwise - use 1750 straps and abt 2050 mem clock. 0.9V undervolt is fine with these cards.

Also check therm pads.

Those are nice hash rates. Especially for a MICRON memory rx 470. Don't your cards crash?
Mine go black screen whenever i exceed 2000 mem clocks.

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═════════════════════════     Powered by GoldenHill International     ═════════════════════════
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October 30, 2017, 09:11:55 AM
 #6

I use 1625 strap , i underclock with afterburner -80 and set 1138/1954 . Do you use the blockchain driver or a regular one?
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October 30, 2017, 09:56:36 AM
 #7

Posting link to your original bios is always good when making request

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