Vega 56 and Vega 64 guide

[Smining570]

try ,
amdmemtweak --RC 37 --RP 12 --WR 13 --CWL 8 --FAW 12 --RAS 22 --REF 65535 --RFC 239 --RTP 6 --RRDL 5 --RRDS 3 --WTRL 9 --WTRS 4 --RCDRD 12 --RCDWR 12

core 1130 vdd 830 mem 1045 & aggressive undervolting. if it start mining with these u can try higher core/mem and if not, go down to core 1100 and mem 1020 and when and if it init and start…let it run for some time and then try to go up with 5-10 step by step on mem/core, one at the time…and each time let it run for few minutes in between .good luck, hope this helps

[MKM8]

Thanks so much, dude.

I’m up to ~54Mh/s with your settings and memory at 1000MHz. Seems completely stable as well. I’m going to see if I turn it into a Vega 56Mh/s.

My temps aren’t too bad either. Sitting between 55°C and 60°C according to GPU-Z, fan speed ~55%.

I should have started doing this a long time ago.

[Smining570]

good to hear that values helped your. You might get 2mh more with higher core and mem, i would look into consumption allso, but first i would suggest that let it run as is for a day–or two and see if it starts acting up, are u getting invalids or other issues, if not start further tuning easy easy good luck with mining

[Smining570]

try to start with mem 2050 core 1050 with rx570. rx580 should be fine as is, but might be good idea to take that one down a bit allso and when u get them mining go back up with your oc.
In pic u dont have any vdd values, so apply vdd 850 to rx5xx for starters.

edit.noticed your high core for vega´s. maybe try with lower value for get them up and running. mem like something between 1000-1045…

[Wiscominer]

I have bought many (15) Vega cards and none get over 960 mem, can anyone enlighten me on what I am missing? Above 960 they drop to 8-9mh

[Mereuta]

i can t mine with my vega 64 and the other cards because of the vega plz help
i tried in windows and video card had no problem mining

[oni]

somewhat more info might be useful; what brand and type, what vbios, what core clocks, what voltages, what straps, … ?
the more info you give us, the better we might help.

[oni]

what we’re all doing here is flash a 56 bios on the 64 cards; all OC’s and straps mentioned in this thread are for 56 (wether 56 original or 64 flashed to 56).

[oni]

@steroid

I belive vdd doesn’t generate Invalids. For me it was too high mem clock or too tight RCDRD or RC timings. Sometimes rising slightly mem voltage could also help.

Oh, I taught it helped in keeping the core stable which in term kept the memory stable thus also less invalids

@steroid

What does aggressive undervolting do? I have it switched off on all Vegas.

If I remember correctly it sets all powertables to the clocks and voltages we set in the OC.

[RazorSharp]

Hey guys, thank you for sharing your results and progress during the whole time! I’ve been lurking for the past 2 weeks for proper straps and settings for Vega 56 cards, tweaked, and achieved really stable results by now. I thought I would share my settings with you guys to help anyone who has troubles with a Vega 56 Card (Samsung & Hynix memory). All my cards run on stock bios by the manufacturer. I should note that I DON’T use HiveOS since I don’t have many cards at my disposal and I just got started. However this forum and you guys provided tons of useful information so I am just returning the favor!

Cards:
2 x PowerColor Radeon RX Vega 56 Red Dragon 8GB (Memory Type: Samsung)
1 x PowerColor Radeon RX Vega 56 Red Dragon 8GB (Memory Type: Hynix)

Performance:
Samsung 1/2: +55.3MH/s @ 115W = 0,481 MH/W (P7: Core 1200MHz/813mV P3: Memory 1020MHz/820mV)
Samsung 2/2: +56.0MH/s @ 121W = 0,462 MH/W (P7: Core 1200MHz/870mV P3: Memory 1025MHz/820mV)
Hynix: +53.2MH/s @ 112W = 0,475 MH/W (P7: Core 1160MHz/850mV P3: Memory 970MHz/850mV)

Straps:
(see attachments)

Cooling:
AirCooled, however I adjusted the fan curves in a way that the HBM2-memory stays below 60°C. It might be a bit of an overkill, however I prefer my cards to stay as cool as possible and avoid any thermal degradation and bottlenecks.

OS:
Windows 10

Drivers:
AMD Radeon 21.5.1 (most recent)

Software:
AMD Memory Tweak by Eliovp & A. Solodovnikov (v0.2.3)
HWiNFO (v7.02)

Miner:
TeamRedMiner (v0.8.2.1) TRM seems to be the most efficient and fastest miner so far. I personally use the A-Mode since the B-Mode tends to be a bit more unstable. However, you should give B-Mode a try to gain a bit more performance and efficiency and see if it works for you!

Algo:
Ethereum (ethash)

In General:
Feel free to ask any questions concerning the straps and clocks. As you may know, every card is different, and my settings might not directly apply to your card specifically. You might need to adjust your Core/Memory voltages as well as your Core/Memory frequencies. (i.e. my seemingly identical Samsung cards work on different core voltages).
For that matter you should read the Tuning Guide “ETHASH_TUNING_GUIDE.txt” by TeamRedMiner for a better understanding.

If you see any space for improvement or optimization let me know!

Shoutout to @ss-silver @Smining570 @Rocco1180 @vsimovic for providing awesome straps and info, thank you guys! Keep up the good work, cheers!

[ss-silver]

Nice break down that’s cool and great performance on those!

I finally got my Vega 64 (GPU 4) to 56mh, under 120w today pretty excited about that

Same strap, just new core and mem.
amdmemtweak --CL 20 --RC 37 --RP 11 --WR 14 --CWL 8 --FAW 12 --RAS 20 --REF 65535 --RFC 248 --RTP 5 --RRDL 6 --RRDS 3 --WTRL 9 --WTRS 4 --RCDRD 18 --RCDWR 12

Also found where the original REF 65535 strap came from (he ran a 64 flashe dto 56 for a day at rcdrd 12 for 57mh but threw 123 invalids:

r/NiceHash - Vega56 , 57mh/s

While doing some testing I was able to hit 57.5 with rcdrd 18 mem 1100, 825mv but started throwing invalids after 2 min. Tried Rcdrd 20 and it was still 57mh but invalids after 5 min.

[Wiscominer]

gpu 0 is a 64 flashed to 56

[Wiscominer]

GPU5 and 9 are 64 flashed to 56

[Wiscominer]

[RazorSharp]

I see, yeah the tREF 65535 seems off, since it should always be a whole multiple X of the stock tREF.
I tested it too, and it looks like increasing tRCDRD dramatically reduces the hashrate and by increasing the MEM clock to compensate for the dropping hashrate the GPU gets unstable. I bet on a longer run the GPU would simply crash.

Happy the Vega64 worked out for you!

I will try to find more info on straps in the next view days. If i find somethingthing useful i will let you guys know.

[Smining570]

What i have find u are right about RCDRD. I have managed to rised Mem with higher RCDRD value but without higher Mem hash goes down… its joggling with different values & strap combos. Thanks for doing some rechearch, have tried allso but most of it goes beond my paygrade when trying to apply in real life what iv learned about the straps by reading about theory how they affects gpu. Please do let us know what u find out

[ymnsrkn]

I’m a little stuck with my MSI Vega 56 Airboost. 46.16 MH / s does not increase. I flashed it, strapped it, but it doesn’t change. can you help me.

[ymnsrkn]

Uploading: Ekran Resmi 2021-05-14 22.58.44.png…

[ymnsrkn]

can you show me a way I need help.

[Smining570]

from the mem info it looks like the vbios might be wrong one xxx.xxx.xxx. Maybe if u doubble check that its the right vbios and try to reflash the card? …remember that flashing can brick your gpu