I've tried to improve my mining speed, so I made new rom for RX 480 Nitro 4G with shitty Hynix memory. I was able to reach almost 29MH/s with draw around 80W. I might try to get a little more from this card but there probably isn´t much room for improvements.
BIOS:
https://drive.google.com/file/d/0B-kL1imq8JJzQmNHOUhGZmMxZ00/view?usp=sharingWattTool profile:
https://drive.google.com/file/d/0B-kL1imq8JJzcHR1SldxSjl2RGc/view?usp=sharingBIOS MD5: F068FEB35C03DFAF60E33B46A1DB60D0
Just make sure to load WattTool profile before mining as bios defaults to 1750 MhZ for MEM and 1306 for Core (with high voltage). Why? Cause I am using this card even for gaming and it is not very stable at 2 GhZ in 3D. Straps from 1500, default mV for memory.
In case of core voltage, I had to use offset feature in WattTool as I was not able to set mV for core (according to GPU-Z monitoring).
I´d be happy to hear your feedback
Enjoy!
Comments
Thanks.
What type of memory you have on this 480/4 - Hynix may be?
I have one with Samsung memory and when I compared bios, I found out that in your there is a time strap on 1425 MHz which is missing as a position when I open Samsung.rom in PBE. But I do have 1900MHz timing...
?!?!
I modified your bios to place the wattool settings into the bios (except core mv change of course), and still found 3 cards (6 card rig) would crash after a few hrs, so I changed the memory to 1950 instead of the 2000, and they've been completely stable for over 72hrs, 48hrs of them dual mining. Using the claymore engine, I'm now getting 27.56 mh/s out of each card after the fee while single or dual mining!!
That's over 30% increase !
MANY MANY THANKS !!
https://forum.ethereum.org/discussion/10815/can-help-me#latest