Bitcoin Forum

Hello, I am looking for a guru who would be willing to modify and provide bios for ETH mining under linux (Ubuntu). I am willing to pay for the knowledge and time. If you are interested please read on, else just ignore it :)

So I am using this modded bios:
https://forum.ethereum.org/discussion/9533/28mh-470oc-nitro-4gb-boysie-rom-dual-mining

It gives a decent speed of 26.6 Mhz, however a watts consumption is around 150-155 per GPU (in a long run), first hour it is less but later on it looks to increase up to 160 watts. Now I have tried to modify this bios in Polaris Bios Editor, however was able to reduce power consumption only by a few watts. Now no matter what I change using this tool  it looks that there is no influence to speed or watts consumption.

I have read that these cards are drawing around 100-110 watts from the wall under windows 10 , and tools like wattoman (however windows with 6 GPU's in it tends to be unstable for me, thats why I would prefer to use ubuntu).

Many of you pointed out that modifying offset in hex editors is the way to go, however I don't have enough knowledge and skill to do that. If you are interested please drop me a line, I can provide on original bios or maybe bios from the the link I gave is actually a good start?

Any questions? Just shoot :)

p.s. if you have already modded working bios with decent speed and low consumption maybe interested to share it against some BTC?

https://m.youtube.com/watch?v=uy0roLG7ARc

Nice tutorial, but it doesn't resolves the voltage offset issue.

follow tutorial to change memory timings,use watt tool 0.92 to adjust core voltages.my xfx rx 470 black 4gbs are stable at 950mv and 1256mhz. memory at 1925 and 1000mv ..only card powering monitor 1000mv.28mhs