Vega 64 - 54MH/s with less than 130w

[0Lucifer0]

Hi,
I’m just here to share some info and hoping people to find even better way to get those results.

I flashed my vega 64 with a vega 56 bios of the same model:

TechPowerUp

i’ve used this tutorial but I think Hiveos flashing tool should be enough.

RED BIOS EDITOR and MorePowerTool for Polaris, Navi and Big Navi | Page 3 |...

used the strap
–CL 20 --RAS 26 --RCDRD 12 --RCDWR 12 --RC 38 --RP 12 --RRDS 3 --RRDL 5 --RTP 6 --FAW 12 --CWL 8 --WTRS 4 --WTRL 9 --WR 13 --REF 24000 --RFC 239

Core: 1110
VDD: 840
MEM: 1028

I’m using team red miner 0.7.16c

If people find better straps or OC configuration i’m interested

[418805971]

-CL 20 -RAS 26 -RCDRD 12 -RCDWR 12 -RC 38 -RP 12 -RRDS 3 -RRDL 5 -RTP 6 -FAW 12 -CWL 8 -WTRS 4 --WTRL 9 --WR 13 --REF 24000 --RFC 239
How to operate？
thinks

[418805971]

my 5700xt ，we can discuss

[0Lucifer0]

This whole thread is about vega not rx 5700 xt.
you can use the straps using amdmemtweak but again that’s only for vega

[418805971]

The vega ，amdmemtweak What is the format
Can you show me
thinks

[418805971]

amdmemtweak -CL 20 -RAS 26 -RCDRD 12 -RCDWR 12 -RC 38 -RP 12 -RRDS 3 -RRDL 5 -RTP 6 -FAW 12 -CWL 8 -WTRS 4 -WTRL 9 -WR 13 -REF 24000- RFC 239

Is that so?
But I’m so tried, as if not

[0Lucifer0]

amdmemtweak --CL 20 --RAS 26 --RCDRD 12 --RCDWR 12 --RC 38 --RP 12 --RRDS 3 --RRDL 5 --RTP 6 --FAW 12 --CWL 8 --WTRS 4 --WTRL 9 --WR 13 --REF 24000 --RFC 239

but that won’t change anything on your 5700 xt

[0Lucifer0]

i’m using the beta image

[Jonthe83]

I envy you. I have been fighting with my vega 64 for a month to get them up from 39… i touched 47 once, then unstable. So to get them stable i had to go down to 38… worse than when i started. And still not stable…

Do you have to run bootstraps manually after each reboot?

I have not flashed to 56… because i have so much other issues i dont dare =(
Any other suggestions for me to get my vegas working?

[0Lucifer0]

change the kernel to the beta one.
you can set the command to your xinit.user file and turn on GUI so it run at startup.

[esco]

Hi. Thank you for quality info. Can I ask why have you flashed vega 64 with vega 56 bios? Is it for better overclock? I have vega 64 and overclocked and changed timings I cannot get stable over 47mh/s. Will flashing with vega 56 bios help?

[0Lucifer0]

It just consume less and goes higher in hash rate. Doesn’t make it easier to overclock. You should be able to get 51H/s stable on Vega 64 not flashed

[dice]

So your saying if i already have a Vega 56 I should be able to get 54MH? I flashed all my 56 cards to 64 and ran a strap someone else applied and using these OC settings

1000
900/850
1100

only getting 49mh

[0Lucifer0]

No I’m not saying that. Vega 56 can’t reach those performance. I’m talking about 64 flashed to make the system think they are 56 not the opposite.

[dice]

how do you change the mem tweak for only the vega 64s i forgot how.

[0Lucifer0]

—i Index of card

[dice]

amdmemtweak --i 0?

[SybrBlue]

Thanks for the tidbit about setting the amdmemtweak settings in the xinit.user file, I was bashing my head against the wall trying to use .profile and the rc.local (neither worked).

What Kernel are you on? AND how would you change to the beta one? I am on: Kernel
5.0.21-201105-hiveos

Thanks again!

[SybrBlue]

I actually found (with minimal testing, so take it with a grain of salt) that flashing my Vega64 with the Vega56 actually made my rig more stable AND faster. I was having issues with my Vega64 dropping to single digit 4-8 MHashrate (as in your example). Flashing to 56 has it running more stable in the 50s using the straps above using 1110 840/0/0 1025 in the Hive Overclock.

Just FYI - if you are fighting with your 64s I would recommend trying to flash to the 56.

[0Lucifer0]

That is the whole point of this thread