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Vega 56 OC Settings Explained For 55 MH/s

Try these: amdmemtweak --CL 20 --RC 36 --RP 14 --WR 14 --CWL 8 --FAW 12 --RAS 22 --REF 65000 --RFC 249 --RTP 5 --RRDL 6 --RRDS 3 --WTRL 9 --WTRS 4 --RCDRD 14 --RCDWR 12

Go for 1100/850/1025.

That setting should get you 55. From there, dial down your rcdrd if you get too many invalids. Or, also, dial down the voltage. So go for like 1100/850/1000.

Some cards can’t hit that high. You’ll have to dial them down to hit the sweet spot.

Thanks, I will give that a shot tomorrow and see how it goes. Although when I tried a strap with rc 36 before the whole card would crash instead of just invalids.

Tried those straps and for some reason RC 36 does not get along with my cards. They seem to hard crash like that, with RC 37 my hash is a bit lower but only have had issues with invalids so far.

Testing this right now:

1080/850/1020

problem card:

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 14 --RCDWR 12

After 28 hours yesterday I ended up with 8 invalids but was using RCDRD 16 then. It was only a 0.5% invalid ratio so trying 14 rcdrd since it seemed to have about the same invalid ratio.

Better card:

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 12 --RCDWR 12

After 28 hours yesterday I ended up with 0 invalids, I tried rcdrd 10 but the card crashes instantly. Anything else I can try on it besides dropping voltage?

Any other timings I should mess with besides RC and RCDRD?

Voltage doesn’t seem to have a big effect on invalids?

That’s strange because my cards are the opposite. They hate 37. I always see better stability messing with voltage and rcdrd for Vegas. I keep mine pretty high and will only take it down if the invalids persist. I start with 1100/875/1025, and will move down from there. If the invalids keep, my baseline is 1050/850/950 and I’ll go up or down from there with rcdrd until I am stable.

Yeah, can’t explain it. Anytime I try RC 36 I get hard crashes but with RC 37 I just get invalids.

I tested a bunch of settings just now but kept getting crashes so back to what I was using yesterday for now and going to try dropping voltage at this point I think.

Wish I could stop the invalids on the problem card, I will try upping RCDRD to 18 and see what effect that has I guess.

Dropping the voltage will lower your wattage but not solve the invalids. More power is better for the memory during test/tune period. Try 900 VDD and test a while with more voltage and see what the invalids do. I tune my cards with 900 VDD till I get them running good then I lower the voltage as the final step to get the lowest wattage with out crashing the card. Hope this helps. My bottom 2-3 cards are hopeless. I gave up on them.

Alan

Yeah, that is basically what I am about to do with this card, seems semi stable with RCDRD 18. No invalids yet after 3 hours. Will let this run overnight and if all goes well might try rcdrd 17 before dropping the voltage.

This is what the problem card is running now:

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

The other card is odd, on one hand it seems good and easy to tweak but then it will crash if things are not just so. Had it up to 57mh for a bit but trying to dial it in a bit more conservative now.

Running this on the good card now:

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 12 --RCDWR 12

If I can get them stable at the current hashrates I would be happy, gives me a nice round number for the whole rig lol.

I would try bumping the core to 1085 and the memory to 1025 and see what hash rate you end up with. You’re really close. Going up 5 on the memory will make a big difference.

Alan

RC 36
RP 14
RCDRD 20-12 range
REF 65000

Just a little update on this: the card is running strait for 22 hours without any invalid due to a change i made on the core to 850 instead of 840. I was trying to save some watts but the only thing i got was invalid shares. Then i changed back to 850 and no more invalids!!! Let’s hope this is the solution!

Very nice!!!

Ok, I will give that a try, I tried RCDRD 18 overnight and had 3 invalids after 9 hours, seems about the same as rcdrd 16.

I tried bumping it to 20 but hashrate dropped down to 52mh, worse then just living with 0.5% invalid shares at 53.4mh.

I tried raising the core and mem but it crashed completely.

I am going to try raising the voltage to see if that will help the invalids and if not then looking like I will stick to 18-20rcdrd and try to lower the voltage and live with a few invalids.

The good card I am testing upping the core/mem to see what it can do but think it is pretty close to the limits without using a lot more power.

Fyi
When flashing bios, i usually leave switch in all dual bios cards flipped on the side facing power connectors “normal” in the picture.
The benefit of dual (tripple) bios is that we can keep other bios file on the card as backup so that its possible to recover bricked card that was flashed with switch in "normal / oc"position.
So dont flash both sides…or all positions.
For recover after failed flash and if card is bricked, u just need to flip switch to position where is working bios and the hive will find card again, then go to hive bios flash tab and first select your new bios file, force flash flipped on and before hitting “flash cards” flip switch to position where u have bricked bios…and it will flash that one…if you have correct bios file you will end up having perfectly working card with all bios options working again.

Narrowing in on the settings for my cards it looks like.

Tried raising the voltage on the problem card to 900mv and set rcdrd to 16 and it managed 2 invalids in 8 hours. At this point I think I am just going to accept that, 1 every 4 hours is like 0.3%. Just a matter of dialing in the voltage at this point.

The airboost card I have set at 12 rcdrd and it was stable at 1080/1020/825mv before. I tried upping the core to 1100 and it crashed so tried upping memory to 1025 and it also crashed after 8 hours.

So going to drop it back to 1080/1020/825 and see how stable it stays longer term and adjust voltage accordingly. Sitting just under 55mh like this @ 122w.

If I can get them stable at these settings I will be happy, still a 10mh total bump from what I had them doing before with only a few extra watts of power.

Thanks for all the help. I will try to remember to check back in after I see longer term stability.

1 Like

Before I forget about it figured I would update my latest settings on my MSI vega 56 ref and airboost cards.

there are the settings I have basically settled on:

The problem ref card is running :

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 17 --RCDWR 12

and the airboost is running

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 12 --RCDWR 12

I am going to play with raising the RCDRD on the problem card over the long term but in 24 hour tests it didn’t seem to make much of a difference after 16-17. Also had to bump up the voltage on that card to 850 to keep it stable. Didn’t seem to help going over that.

The airboost card seems to like these settings. Increasing the core or memory tended to cause it to crash and tweaking the straps any tighter caused crashes or invalids.

Dropping the voltage to 815 worked but it then didn’t submit as many shares so went back up to 825 and seems to be working good there. Interestingly, they are both running at the same reported wattage at stable settings.

I am considering increasing things a bit more and not worrying about the wattage but oddly increasing voltage didn’t seem to help much in the past.

whoa. 45mhs with Vega FE? congrats
could you give me your amdmemtweak?

I think that Sapphire Vega PULSE cards are the best (even better than Nitro+). You can push Pulse card with hynix memory to 54MHs:

what could be wrong with my video card? 8mhs and 130w TeamRedMiner

Core Clock 1100

Core Volt 840

Memory control

Memory clock 1125

Memory volt

amdmemtweak --CL 20 --RC 36 --RP 14 --WR 14 --CWL 8 --FAW 12 --RAS 22 --REF 65000 --RFC 249 --RTP 5 --RRDL 6 --RRDS 3 --WTRL 9 --WTRS 4 --RCDRD 14 --RCDWR 12

My guess would be to increase the core voltage to 850 as that’s what I have mine at and if it still doesn’t work try lowering the memory clock down in increments of 5-10

Also what kind of memory does your card have? I’ve noticed Samsung works a lot better with the amdmemtweak settings you posted while Hynix is more finicky.

I sold that card. Try amdmemtweak for Samsung and then change RCDRD to 20. Then go down as close to 12 as your card will allow without throwing to many invalids. Keep VDD at 850 till card is stable then you can lower it to get the best wattage setting. Hope this helps. Alan

As soon as I go down the memory clock will turn off immediately.
Vega 56 ASUS
Samsung memory

And what’s even more interesting is that I see this on a monitor. however, these parameters are not specified