AMD Sapphire Radeon RX Vega 64 (56) Nitro Settings (for those having issues with invalid shares)

[MiningNewb]

So I wanted to share my setup for those having issues with these cards. It took me a while to get the settings right as to where I was getting no invalid shares. I stumbled on this guide originally which helped but the settings did not work for me. My rig wouldn’t even power on and then when it did, I kept getting invalid shares, but slight adjustments in the overclock settings and straps solved the issue. I didn’t want to mod the bios on my 64s to 56 settings either. Here are the settings that worked for me…

Straps: amdmemtweak --CL 18 --RAS 22 --RCDRD 23 --RCDWR 12 --RC 36 --RP 13 --RRDS 3 --RRDL 4 --RTP 6 --FAW 12 --CWL 7 --WTRS 4 --WTRL 9 --WR 13 --REF 65000 --RFC 249

Overclock:

Seems like the RCDRD setting was the issue with the original guide for me. Once I increased that, it booted up normally. I’m probably missing out on 1 or 2 MH. I had them close to 54 MH at one point but I kept getting invalid shares. It’s now stable and I’m happy with the power consumption to performance ratio.

If this helped and you want to buy me a beer:
ETH: 0xa268184892ea0cee3016c6eb0d5b88260759be09
RVN: RCBsva589mFADixX1ueCZYyK423a66pxYi
PayPal: PayPal.me

[vsimovic]

Ill just ad the settings you posted and I adjusted a bit that gave me the biggest hashrate on my Sapphire Vega 56 without invalids or reboots.

–cl 20 --ras 23 --rcdrd 20 --rcdwr 11 --rc 36 --rp 13 --rrds 3 --rrdl 5 --rtp 6 --faw 12 --cwl 7 --wtrs 4 --wtrl 9 --wr 13 --rfc 248 --REF 65535

[frax0r]

What is the “7” in the chart?

[CryptoHideki]

Thx Bro since Berlin i see invalids shares from nowhere and you just save me !

[MiningNewb]

Glad to hear it’s helping!

[MiningNewb]

Core state / DPM setting. I don’t think it’s necessary and only shows on the HiveOS mobile app (not on desktop) for me but I tried it on another rig and it helped and since it was stable I just left it.

[frax0r]

Thanks for the help, I have finally reached 50+Mhs, I was having so many issues getting there.

[MiningNewb]

Nice! Good to know it also works for others…thanks for the update

[Isehwurscht]

Hi and thx.
But i have the Problem that after some hours i am getting Invalid Shares on my Vega64 with Samsung Memory.
What can i “alter” to get it more stable?
And how i can set the DPM setting? I Cant find it on the tab.

[MiningNewb]

You should see the DPM setting on the mobile app.

Besides that make sure you copy the straps and overclock settings and you should be good to go.

[arwaseemaffidi]

What is your card Core Voltage & Memory Voltage

[arwaseemaffidi]

Please share you card Config window. because my interface is different than you

[MiningNewb]

Is this what you need?

[Smining570]

up with RCDRD

[Isehwurscht]

still cant find the settings - but at the moment it runs very good with 1100/855/1050 → 50.9MH

[MiningNewb]

Which setting are you having issues finding? DPM or RCDRD?

[5519q]

I really appreciate if someone can assist me, I’ve tried 3days overclocking my vega 64.
Flashing my Sapphire Vega 64 Nitro + to Sapphire Vega 56 Nitro +, and apply all the straps in this post and also other straps at another main vega 64&56 post, the most stable I can get is only 25hours, and gpu found dead 511c temperature after that.
I also tried to flash it back to my original 64bios, and follow exactly this post, theres always the only one gpu found dead even I lower the oc settings. GPU 1 is always dead after few hours.

[MiningNewb]

@MiningNewb

RCDRD

The settings posted in the original post should work perfectly with a 64 using 64 bios. I’d try to play around with the RCDRD strap setting if it’s still giving you issues. That’s the one I found that gives me the most impact with invalid shares.