[UPDATE] RX480 (Ref) 31+Mh, Custom Rom - VDDC OFFSET + Custom timing

[FlensGold]

Hello,
I received a few Sapphire RX480 8GB (Reference Design) today. Unfortunately the links from the first post are down.
I am looing for a good and stable BIOS for Mining ETH/ZCash (I know they are different, but it would be good If I could mine both (not at the same time) without reflashing BIOS).
I would be happy if someone could help me out.
Thank you!

[Maxumark]

At Fensgold:

You can get 75 SOL on a stock RX480 at the moment using Silentarmy V5 or with Simplemining using the Silentarmy mining option.

[AzzAz]

Hello,
I received a few Sapphire RX480 8GB (Reference Design) today. Unfortunately the links from the first post are down.
I am looing for a good and stable BIOS for Mining ETH/ZCash (I know they are different, but it would be good If I could mine both (not at the same time) without reflashing BIOS).
I would be happy if someone could help me out.
Thank you!

Just take Claymores 7.3 and Z 4.0. Make bat file in each. Use 7.3 for eth : clock memory higher and 4.0 for zec use factory clocks...

[Tmdz]

Hello,
I received a few Sapphire RX480 8GB (Reference Design) today. Unfortunately the links from the first post are down.
I am looing for a good and stable BIOS for Mining ETH/ZCash (I know they are different, but it would be good If I could mine both (not at the same time) without reflashing BIOS).
I would be happy if someone could help me out.
Thank you!

Just take Claymores 7.3 and Z 4.0. Make bat file in each. Use 7.3 for eth : clock memory higher and 4.0 for zec use factory clocks...

run a modded bios with 1500 straps then undervolt.

[FlensGold]

Hello,
I just startet Claymore 7.3 with cclock (1220) and mclock (2275) settings. It seems the hashrate does not change, it is still around 24,7MH/s.
Furthermore I have no clue why GPU-Z does not show me the current numbers on the clock settings:


Does anyone have an idea about this?

Edit (if this is important):
Mainboard is ASRock H81 Pro BTC with "PCI Express" as primary display (Monitor is attached although I am controlling it via Teamviewer), CPU is a Celeron.
Win10 Professional + 8GB RAM. Latest Drivers installed.

[jenia1]

Hello,
I just startet Claymore 7.3 with cclock (1220) and mclock (2275) settings. It seems the hashrate does not change, it is still around 24,7MH/s.
Furthermore I have no clue why GPU-Z does not show me the current numbers on the clock settings:


Does anyone have an idea about this?

any idea why your Temp is not shown? i have the same problem

[AzzAz]

Hello,
I just startet Claymore 7.3 with cclock (1220) and mclock (2275) settings. It seems the hashrate does not change, it is still around 24,7MH/s.
Furthermore I have no clue why GPU-Z does not show me the current numbers on the clock settings:


Does anyone have an idea about this?

any idea why your Temp is not shown? i have the same problem

Drivers...install latest
try gpu1130 - mem2250 with 7.3. that will give 26-27. For more go for moded bios.

[FlensGold]

Hello,
I just startet Claymore 7.3 with cclock (1220) and mclock (2275) settings. It seems the hashrate does not change, it is still around 24,7MH/s.
Furthermore I have no clue why GPU-Z does not show me the current numbers on the clock settings:


Does anyone have an idea about this?

any idea why your Temp is not shown? i have the same problem

Drivers...install latest
try gpu1130 - mem2250 with 7.3. that will give 26-27. For more go for moded bios.

That was my initial question. Does anyone have a modded BIOS for RX480 8GB Reference Card that also works with ZCash (at least it should run stable)? Links in the first post are down

[AzzAz]

Hello,
I just startet Claymore 7.3 with cclock (1220) and mclock (2275) settings. It seems the hashrate does not change, it is still around 24,7MH/s.
Furthermore I have no clue why GPU-Z does not show me the current numbers on the clock settings:


Does anyone have an idea about this?

any idea why your Temp is not shown? i have the same problem

Drivers...install latest
try gpu1130 - mem2250 with 7.3. that will give 26-27. For more go for moded bios.

That was my initial question. Does anyone have a modded BIOS for RX480 8GB Reference Card that also works with ZCash (at least it should run stable)? Links in the first post are down

Zec mines stable and high hash on factory clocks. Moded bioses were for ETH. Though most cards with moded bios are good on ZEC - it does not like high memory clocks as ETH. Try more search for moded bios ( I don't have time now )

[FlensGold]

I managed to get the miner started and having GPU-Z values.


Then I tried around with mclock/cclock settings, but no matter what I do set there - the system freezes short time after start of the miner. This also happens with the stock parameters. Any Idea what I am doing wrong?
(I disabled those settings to create the screenshot)
-cclock 1266
-mclock 2000

[jenia1]

I managed to get the miner started and having GPU-Z values.


Then I tried around with mclock/cclock settings, but no matter what I do set there - the system freezes short time after start of the miner. This also happens with the stock parameters. Any Idea what I am doing wrong?
(I disabled those settings to create the screenshot)
-cclock 1266
-mclock 2000

hmm.. so may i ask how come gpu-z suddenly shows temp. unlike before?
i have also same problem... also my miner used to show temps and fan speed but now after i tinkered with dirivers its gone..

[FlensGold]

I managed to get the miner started and having GPU-Z values.


Then I tried around with mclock/cclock settings, but no matter what I do set there - the system freezes short time after start of the miner. This also happens with the stock parameters. Any Idea what I am doing wrong?
(I disabled those settings to create the screenshot)
-cclock 1266
-mclock 2000

hmm.. so may i ask how come gpu-z suddenly shows temp. unlike before?
i have also same problem... also my miner used to show temps and fan speed but now after i tinkered with dirivers its gone..

I had to attach the monitor to the RX480 GPU. Before I had it attached to the onboad GPU. My ASRock H81 does not start without attached monitor if the primary Display (in Mainboard BIOS) is set to "PCI Express"). So normally I set this to "Onboard" to run the rig without Monitor. But this leads to the fact that I do not get numbers...

[mohaab]

What hash rate you got with rx 480 8GB reference mining zcash with claymore v5? I'm about to buy a used one!

[FlensGold]

What hash rate you got with rx 480 8GB reference mining zcash with claymore v5? I'm about to buy a used one!

About 120 h/s.

[Walrusbonzo]

Eliovp, or anyone else.

Are the voltage offsets a twos complement/signed number? I.E. is FF  = -1? And so FE = -2, FD = -3 etc?

i'm looking to add a negative voltage offset to the BIOS of my cards and just need to know this before I accidentally give it extra voltage.

EDIT: Looks like it is, assuming the offset is done the same on RX480 as 290x

[jenia1]

just god my 2nd sapphire rx 480 8gb ref, flashed it with the Eliovp 32 MH/s rom and guess what. again same problem as with the previous card. curently running 4x xfx RS and 2 x the sapphire ref cards any ideas of the reason?

[crypsy]

Hi, can some help me mod my cards to get 29-30 mh/s, i have asus rx 480 8gb strix.

[batko]

sent orginal bios

[breakrules]

Hello 
Can anyone give me a link to undervoltage settings (ROM, BIOS) for video card SAPPHIRE NITRO+ RX 480 8G GDDR5 OC (11260-01) with VRAM Samsung?
Thanks in advance 

[liomojo1]

May you guys , say which 480 4/8gb and 470 4/8gb has samsung chips ddr, so to know what to buy?