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i have an rx480 by MSI (MSi Armor 4gb OC) and im only getting 19-21MH/s

im using the latest crimson relive 16.12.2 driver

im using stock clocks (1291mhz core, 1750 memory)

does anyone have a bios thats UEFI or information on how to flash this particular one, or what tools are needed to do so, and what needs to be adjusted to gain a higher MH/s?

any and all help is appreciated

im mining 19.4mh/s on eth

and 319 MH/s on sia

Why not post in the topic for the claymore miner? There is already all the informations you are looking for too  :(

Hi to Flash your gpu BIOS you need Atiflash
For Edit your BIOS.rom you need veb7
To Export or save your orginal gpu BIOS you need gpu-z to save it!  But take care when you Flash the BIOS it is possible when you do something wrong you crash the card or it dont Boot!   Regards Lafu

NO DONT USE GPU-Z to save bios , use ATIFLASH  to save it , because gpu-z doesnt save all blocks of bios , all you have to do is to coppy 1750 straps and put it to 1900 and 2100 , so your gpu will be something like 1150 / 2100 , also do not forget new GPU doesnt recognize moded cards , you have to do a trick to get past driver signature , after all these steps you can do something 27mh in dual mine , but i recommend you just to solo mine ether , rx 480 can do up to 29.2mhs with only 75w at gpu-z

I user gpuz on mine, so you are saying i am going to have problems? Sometimes it crashes or reduce its hashrate. Maybe thats the problem?

I flashed 2 months ago, XFX RX 470

To get up to 27 MH/s speed with your card you will need to go into Wattman and bump that memory up to at least 2200 Mhz.  For now why not try to slowly bump up to see what your memory can handle the 4GB can't all handle 2250 Mhz.  I would try to bump to 2000 Mhz and see if it is stable.. if it is than bump it up in increments of 50 Mhz until you find where it starts to go unstable.  At that point start to bump down by 5 Mhz or so until you go your max stable speed.  I get 27-28 MH/s eth and 330-338 MH/s with Sia dual mining with stock settings and only memory bumped up to 2200 Mhz.

On my main desktop I run my R9 280x and RX 480 8GB just to get a bit more hash power.  Since I am using my RX 480 for games and such I set intensity -ethi 3 on my rX 480 and I am getting 22 MH/s with no lag in my games I play locally, browsing, or watching video.  So these cards can handle it just fine. So even with my low -ethi setting I am still getting more than you. Get that memory bumped up first and after all that is stable than play around with BIOS mods.

You don't have to OC the memory to 2200 to get 27 MH on a 480 4GB. I have 6 x 480 4GB all running at 29 MH + 430 SC and thats why shitty ELPIDA memory too. Memory is at 2000 with 1500 memory timings straped to 2000mhz.