Hi, thank you 🙂 i am pretty sure lowering the clock for that gpu will fix the problem 🙂

If you want to achieve the speed 29.5-30 you have to flash your bioses. First try with v4.bios and then vdrop bios if your card is hanging.
There are instructions in the tutorial… just make it step by step …

Hello zerofook,

yeah, I have the latest blockchain driver (23 Aug). No, I haven’t installed the atikmdag and no falsh bios yet.

You have to install the official beta blockchain driver:
https://www2.ati.com/drivers/beta/Win10-64Bit-Crimson-ReLive-Beta-Blockchain-Workloads-Aug23.exe

Uninstall the current driver with DDU and then install the blockchain driver. After that you have to patch the driver with atikmdag-patcher-1.4.5

Did you flashed the cards bioses ?

I have finally managed to connect the 5 of my 6 cards.

I tired the 6th on 3 different PCs, and I’m not getting any screen at all.

As for the other 5.

I have optimized my mobo to the suggested settings. and I’ve installed the latest Crimson AMD driver.

Right now , I’m getting 5 cards with 22.5 Mh/s per card. I haven’t made any other changes till now.

Did you flashed the bios ? if yes which one ?
What is your driver and did you patched it ?
Which version of Claymore ?

Just to summarize:

v4.bios – the hash speed is more stable and higher, but the card is hanging after some minutes or hours (5 minutes – 12-13 hours ). => Watchdog hang or blue/blak screen. (mostly blue/black screen)

vdrop.bios – the hash speed is starting on 29.5, it’s stable for 2 minutes and then starts a smoothly drop to 26.2. The drop is happening for a 3-5 minutes. => Watchdog hang after 2-3 days of working. (NOT blue/black screen happening)

Sorry for my broken English 😉

First of all – regards for this tutorial, it’s the best for amd rx480!

I have a rig with 6x AMD Sapphire rx480 Nitro + 8GB. Some of the cards are using the v4 bios from this tutorial and the others are with the vdrop because It looks like the v4 bios is too powerful for its. I’m using the beta blockchain Driver.

I have a problem with the stability of one of my cards. If I run it with the v4 bios the hash is between 29 and 30 mostly, but I see drops to 20 when I’m pressing S button in Claymore. However the total average speed is 29.8, which is perfect. The problem is that after working some minutes (from 2 minutes to 12 hours) I’m getting blue/black screen.
So I changed the bios with the vdrop version. The result is that the card is starting mining on 29.400-500 and it’s stable for a short time. After some time of working (about 5 min) the hash starting a smoothly drop until it reach 27 – 26,2 and become stable on this speed. The rig is working for 2-3 days and then Claymore watchdog reporting a GPU hang for this card. After Claymore restart all is good and the process is repeating 29.5 -> 26.2 -> Watchdog GPU hand for this card…

This is happening every time when I run claymore no matter if I’m running this card alone or together with the all 6 cards.

I tried to play with the power and the clocks in Wattman, but it looks like the initial configuration from the bios are the best values for this card. Or… I just can’t pick the right values…

Do you have any suggestions how to fix that problem?

P.S. I tested the card with brand new raiser, but It’s not the problem.
P.S. The rig is working excellent if I’m running it without the problematic card.

right now I’m with 17-18 Mh/s stock.

I’m still waitting for my rig parts, so I tried this on a normal computer with no rizer installed. The card is strigiht to the PCI-e 16x. I think this week I will have all the parts of my rig, so I would like to know how to set all the GPU’s.

well done for your blog and all these details you give to your readers. keep it up

Hey @matthewvaneps:disqus , you can find it here: https://www.techpowerup.com/vgabios/?architecture=AMD&manufacturer=Sapphire&model=RX+480&interface=PCI-E&memType=GDDR5&memSize=8192&since= , check for the exact model of your gpu, bios version etc