Sapphire RX470 4GB Mining Edition HELP

[snowpix]

Hi guys.

I just bought some used Sapphire RX470 4GB Mining edition GPUs (Samsung mem).

The problem is that I don't have their original BIOS. With the current bios i get 26Mh/s at 1150 core, 1850 mem clock. Anything over 1850MHz get instant errors, which is weird, since these cards should go above 2000MHz and above 29Mh/s.

Anyway, I'm wondering if there is a "universal" RX470 Samsung mem BIOS, that could get me better results, or if anyone is willing to share theirs if they have the same cards.

I am using Win 10 and I am using claymore miner to mine ETH and to overclock the cards.

[0xcosmos]

backup the current bios
then modify that bios
copy 1500 memory strap to higher straps (1750,2000,2250,etc.)
and see if it increases your hash

[snowpix]

backup the current bios
then modify that bios
copy 1500 memory strap to higher straps (1750,2000,2250,etc.)
and see if it increases your hash

Been there, done that.

I get to 1850 mem clock and 26.7 Mh/s. Anything above that, I get errors.

[Xazax310]

Any reason you're not using Claymore's 14.7 with timing straps? or just use PBE? I have RX470 4Gbs (samsungs non-mining edition) and get 30mh~ with these with no errors 900/900mv @2000mhz

[oldtminer]

you might find it here!
https://www.techpowerup.com/gpu-specs/sapphire-nitro-rx-470-mining.b4736

[snowpix]

Any reason you're not using Claymore's 14.7 with timing straps? or just use PBE? I have RX470 4Gbs (samsungs non-mining edition) and get 30mh~ with these with no errors 900/900mv @2000mhz

I tried but - strap doesn't work. Which drivers do u use?

[bobben2]

Any reason you're not using Claymore's 14.7 with timing straps? or just use PBE? I have RX470 4Gbs (samsungs non-mining edition) and get 30mh~ with these with no errors 900/900mv @2000mhz

I tried but - strap doesn't work. Which drivers do u use?

Try using SRB Polaris bios editor and use the one-click memory strap function
To modify the mem strap.

[adaseb]

A few things, I never had a Sapphire RX GPU before but you might have a dual bios switch, see if you have one then switch it to the other bios. And try and strap this bios and see if it helps. Make sure to make a backup.

You got a rare GPU and might be hard to find the bios for it. I've searched and I might of found one but its for Elpida memory so most likely yours won't work since you got Samsung,
https://www.techpowerup.com/vgabios/196319/196319

Download GPU-z or ATIWINFLASH and post your VBIOS version and filename and try and google search for that exact file. You will need to the original bios since you got no clue what the previous owner did to the original bios.

[cidman]

yea u have 4 bios on mining cards
check the end of the pcb below the 8 pin
should be 2 dip switches
if not ill check back and grab u copy of one of mine
i dont remember how they are classified tho between the 4 dip switches a search will prolly help with that
i flashed whatever bios it was set at when i bought them

backup the current bios
then modify that bios
copy 1500 memory strap to higher straps (1750,2000,2250,etc.)
and see if it increases your hash

Been there, done that.

I get to 1850 mem clock and 26.7 Mh/s. Anything above that, I get errors.

yea thats the wrong strap way too tight prolly 1425
srb bios tool should be able to auto strap ur bios as well
it uses custom straps pulled from all mem manufacturers

[snowpix]

The Mining edition of these cards don't have switchable bioses. I checked anyway, but they don't.

I tried downloading SRB Polaris V3.5, but it somehow doesn't work for me. Pimp my straps, strap editor and any other options don't work. I tried version 3.0 and that one works, but it doesn't have pimp my straps option.

After trying some other things I figured out, that the tool completely works for a different BIOS (from a RX580 8GB). Weird...

[Johny101010]

The Mining edition of these cards don't have switchable bioses. I checked anyway, but they don't.

I tried downloading SRB Polaris V3.5, but it somehow doesn't work for me. Pimp my straps, strap editor and any other options don't work. I tried version 3.0 and that one works, but it doesn't have pimp my straps option.

After trying some other things I figured out, that the tool completely works for a different BIOS (from a RX580 8GB). Weird...

Just for curiosity, download the bid and upload them in here. Id like to see the actual file content myself and hopefully figure something out.

[snowpix]

The Mining edition of these cards don't have switchable bioses. I checked anyway, but they don't.

I tried downloading SRB Polaris V3.5, but it somehow doesn't work for me. Pimp my straps, strap editor and any other options don't work. I tried version 3.0 and that one works, but it doesn't have pimp my straps option.

After trying some other things I figured out, that the tool completely works for a different BIOS (from a RX580 8GB). Weird...

Just for curiosity, download the bid and upload them in here. Id like to see the actual file content myself and hopefully figure something out.

This is the BIOS that the cards came with.

https://mega.nz/#!bvwi3SBA!R6Lw3sLmm34GLYdAzN75znBnqsNaze0OFwb6NRW_PrQ

[Johny101010]

So i think Saphire power gated their rom.
I think this one is the OG Rom:
https://megaupload.nz/dfPcTfy8n2/193398_rom

This is the modded OG rom

https://megaupload.nz/c3P0T8y0n3/try1_rom

And this is the non power gated modded rom by me. Be careful on this one as I can not be responsible for board damages from over powering.

https://megaupload.nz/b9P2Tfybn1/try2_rom


Let me know what happens. Im curios lol.

[ustcstone]

samsung K4G80325FB OR FE?
what's your current stap from 1750?

[Johny101010]

samsung K4G80325FB OR FE?
what's your current stap from 1750?

The ROM he gave me actually had FC, K4G41325FC. I think it has repurposed old 370 memory.

[snowpix]

So i think Saphire power gated their rom.
I think this one is the OG Rom:
https://megaupload.nz/dfPcTfy8n2/193398_rom

This is the modded OG rom

https://megaupload.nz/c3P0T8y0n3/try1_rom

And this is the non power gated modded rom by me. Be careful on this one as I can not be responsible for board damages from over powering.

https://megaupload.nz/b9P2Tfybn1/try2_rom


Let me know what happens. Im curios lol.

I actually found this one too. But I found 8 different BIOSes on techpowerup that had K4G41325FC (SAMSUNG) VRAM so I wasn't sure which is the right one.

If I understand correctly the modded OG rom is with ubermix 3.1 straps. And so is your modded rom. How are try1 and try2 different.

I will try them today in the afternoon.

[Johny101010]

Try2 has the voltages of a normal 470, non mining edition. I have a few of them so I changed the voltages to the ROM you sent me to match the other ones and moded the timing to ubermix.

[Zorg33]

Simply use PBE one click so you have a decent base to start finetuning from.

[snowpix]

Try2 has the voltages of a normal 470, non mining edition. I have a few of them so I changed the voltages to the ROM you sent me to match the other ones and moded the timing to ubermix.

So I tried to flash try1 and ATIFlash says "Cannot erase ROM".

Anyway, I now used PBE one-click on 193398.rom and flashed it.
On 1150/1950 it does 27Mh/s