Yes you can flash to liquid cooled Vega 64 down to the 56 and treat it like a normal vega. Only exception is that I have found is it needs a bit more power most likely for the pump.
You can run 2 different miners in Hive in 1 flight sheet. Run trex for Nivida and Teamredminer for AMD. Hive has some easy videos on how to set that up.
I have flashed my liquid cooled 64 to a 56 and run it at about 52 mhs. Every card is different and some can handle higher memory speeds.
@kennysum1 thank you for your feedback. Can I ask which version of 56 Bios I should choose, as the advice in this thread is to “Choose the same v56” card and use that BIOS?
Also can I safely do the BIOS flashing from with HiveOS or do you recommend I pull it out and use my Windows machine to do it?
With regards to HiveOS I am using stable 0.6-190. Is it safe to, and should one, hit that update option from within HiveOS and go to the latest 06-203-stable?
@DesertSweeper i think can chose any bios check only ram complatible manufacturer
eg i flash my VEGA64 asus strix oc with VEGA56 asus strix non oc stable than oc version
anyone can under clock lower than 1000 Mhz and get stable?
i can’t get mem higher than this so sad
So for those new to this, like me…I took the plunge and upgraded my HiveOS to the latest “stable” version from within the worker. So now I am on 0.6-203@210403
Then I identified my Vega64Liquid Cooled as an XFX model so I went to techpowerup and located the BIOS versions there for the XFX Vega56 card. There I found 4 variants with different numbers. I downloaded the first one ending with 8766 and in HiveOS, after stopping the mining (top of screen “Miner Actions”) and saving my BIOS there (in case I need to put it back later), flashed the BIOS to the card and rebooted. Without any further tweaks my Hash rate went from 38.75 to 40.24 and the power draw dropped from 144W to 138W. Even the temp is a little lower after running for an hour.
So now I need to go back up and read from the start to figure out how to do the tweaks, and move it to a new TeamRedMiner worker as I am currently using a single worker with mixed GPU’s on PhoenixMiner.
Updates forthcoming!
@kennysum1 thank you for the dual-miner tip - this has improved my overall rig numbers and saved some power, and my Vega64 jumped to 45.57Mh/s so the journey is a good one so far from the 37 I was getting when I started. But now I want to apply the amdmemtweak and overclock discussed in this thread but have run into a problem in HiveOS. In the examples I have found, on how to do this final step, they show the GPU’s listed in the miner numerically. So GPU 0, 1, 2 etc. But in my rig I get cards repeated…so I have the first two cards listed as GPU 0:
So how do I tell amdmemtweak which card to apply the straps to?
Any advice would be appreciated.
Greetings @0Lucifer0
You have mentioned above that —i Index of card can be used to specify the card you want to apply the settings to, but how do you identify that index when you have two miners showing two GPUs both as “GPU 0” for example?
Also I am seeing videos on YouTube where they use --GPU to identify - is there a different version of amdmemtweak?
This strap is $$$ Thanks for sharing, updated all my Samsungs to this and it got rid of invalids and let me push mem higher. and way more stable
Is there a simple straight forward guide to adding straps?
Remove those DPM settings.
Thanks to this guide and thread in general I have gone from 7Mh/s on my V65LC to 36 to 45 to 50 and now a rock-solid 56MH/s running absolutely stable now for 24+ hours. Gratitude to @0Lucifer0 and the others who shared their knowledge.
hello, what are your overclocks for 56mh?
Actually I was getting 57+ but it started throwing the odd “Invalid Shares” so I slowly down-tuned it to where it is now with no invalids after 30 hours:
1040/900 core and 1080 VRAM
amdmemtweak --gpu 0 --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
do you use the vega 64 bios? How much power pulling each card in Software and from the wall?
I’m using all of my vega cards with the vega 56 bios. 1025 mem is the maximum stable clock.
please check the following strap from 0Lucifer0 (thank you). With this i can reach 55.8mh @ 1025 MHz memory.
–CL 20 --RAS 20 --RCDRD 12 --RCDWR 12 --RC 37 --RP 11 --RRDS 3 --RRDL 6 --RTP 5 --FAW 12 --CWL 8 --WTRS 4 --WTRL 9 --WR 14 --REF 65535 --RFC 248
Hello @Rocco1180 if you read above in this thread you will see my comments - Bios is flashed 56. I do not want to remove the card now to check at-the-wall as the rig is very stable and pushing max-hash. It is all I have - with the price of ETH right now it is best to let it do its thing.! But I can say that the total-at-the-wall for the rig (with RM850PSU) and the HP1.1KWPSU (some cards on each) is: 535W+463W. As you can see it shows 138W in software.
Thank you, i think you have a very good vega. i have a lot vega cards an non of them reach 56.7 MH 
@Rocco1180 maybe because it is water-cooled. Not sure I only have the one and I got it very cheaply on ebay so that part is lucky yes!
Dang! @DesertSweeper, a local here says he runs Vegas at 1100 mem but I’ve never been able that’s cool. Also love that rig, 6 different cards, I can relate to that.
@ss-silver I bought all those cards on ebay about a year back dirt-cheap (e.g. Vega64 LC was only $415 and 5700Xt was only $400 - RIP those days) for a video-editing project and then they just sat on a shelf for 8 months doing nothing…until I discovered the weird and wonderful world of mining. Built my own rig with stuff lying around the house and some alu-angle. It has been a load of fun and some frustration, but it is making a decent little income now. I will add one more radeon-pro card this weekend as the NVMe risers have arrived, that should net me a solid 320MH/s:
hey all, nining noob here sorry,
i dont have hivesos, just usual windows 64, will those tweak settings work on windows too, ive tried a few of them and get lock up everytime, i have flashed my nitro with the 56 variant, before was getting around 51mh/s, but you know always have to aim higher. if it wont work no biggy as flip bios switch
thx in advance
@born2die68 I was running Windows too. You do realise this is a HiveOS forum right? And you do know it is free for 1 Rig right? As a windoze user I took the plunge and downloaded HiveOS. There is a huge support-base and great YouTive videos. It is actually not as difficult as it may seem. My advice - install it and you will not look back. It is WAY more stable once running…almost set-and-forget. If you insist on using Windows there are many forums and guides for Vega64 that will work for you. Personally I never achieved these numbers in the windows space.
