Sapphire Nitro+ RX 480 4gb Epilda

[bughatti]

Team, I have searched the forums and cannot find much data to go on, hoping someone can help.  I currently have a rig with 3 sapphire nitro+ rx 480 4gb epilda cards.  In a few days I will buy 4 more to fill my msi z97 gaming 5 board.  I am currently running Anorak's OC rom on it and I am getting 28.7 MH/s per card.  First I would like to know if this is good, or can I find/pay for better.  Secondly I have noticed that my gpu0 card always seems to dip down to 24-25 MH/s and wont go back up till I restart the miner.  The others run steady at 28.7  I am currently running Windows 10 Ent.  Would also like to know if anyone can point me to a really good tutorial for me to customize the rom myself.  I have watched dozens of youtube videos and I know about Polaris bios editor and staying with a driver version that does not do checks on the roms.  I am just unsure exactly how to change what fields in polaris, for example what settings can I change or suppose to change in polaris.

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[fanta21]

You don't have to pay for modded BIIOS. Yu can find one on Youtube. Search for "buriedone elpida" video. Its very good. I'm using it myself. I can get my Nitro up to 31MH/s. You canalso mod the BIOS by yourself. Anorak forum has the tutorial using Hexedit.

[bughatti]

You don't have to pay for modded BIIOS. Yu can find one on Youtube. Search for "buriedone elpida" video. Its very good. I'm using it myself. I can get my Nitro up to 31MH/s. You canalso mod the BIOS by yourself. Anorak forum has the tutorial using Hexedit.

Ok so the only issue with this is the rom they provided is only 256, I know atiflash wants 512.

[meeow]

You don't have to pay for modded BIIOS. Yu can find one on Youtube. Search for "buriedone elpida" video. Its very good. I'm using it myself. I can get my Nitro up to 31MH/s. You canalso mod the BIOS by yourself. Anorak forum has the tutorial using Hexedit.

Ok so the only issue with this is the rom they provided is only 256, I know atiflash wants 512.

It's not necessary.

[bughatti]

You don't have to pay for modded BIIOS. Yu can find one on Youtube. Search for "buriedone elpida" video. Its very good. I'm using it myself. I can get my Nitro up to 31MH/s. You canalso mod the BIOS by yourself. Anorak forum has the tutorial using Hexedit.

Ok so the only issue with this is the rom they provided is only 256, I know atiflash wants 512.

It's not necessary.

You are correct, I was trying someones rom that is 256 and kept getting errors saying no vbios file detected.  As soon as I got the original rom from techpowerup that was 256 it flashed fine.  So that means that "buriedone elpida" rx 480 rom is busted

[bughatti]

Has anyone had an issue with modding the bios where after they flash a bios that works fine when a single card is plugged in and shows the correct settings but when 2 cards plugged in that same flashed bios shows the minimal settings like 680 core and 975 mem?

[Bakhtra]

Has anyone had an issue with modding the bios where after they flash a bios that works fine when a single card is plugged in and shows the correct settings but when 2 cards plugged in that same flashed bios shows the minimal settings like 680 core and 975 mem?

What driver you use?
Have you patch your driver with atikmdag-patcher, you can check it at https://www.monitortests.com/forum/Thread-AMD-ATI-Pixel-Clock-Patcher

[bughatti]

Has anyone had an issue with modding the bios where after they flash a bios that works fine when a single card is plugged in and shows the correct settings but when 2 cards plugged in that same flashed bios shows the minimal settings like 680 core and 975 mem?

What driver you use?
Have you patch your driver with atikmdag-patcher, you can check it at https://www.monitortests.com/forum/Thread-AMD-ATI-Pixel-Clock-Patcher

I use 16.9.1 which i was told did not do the driver sign check.  , I also have 16.11.5 which I was told same thing.  Have issues on both

[Bakhtra]

Wah don't know about that.
I always use latest driver that can be patched since I'm playing game so much.
Maybe you can try Crimson 17.2.1 driver.