hello,
I have two of the MSI™ Radeon™ RX Vega 56, the cards I have have Hynix™ HBM2 and I think all of the AMD Radeon™ RX Vega 64 use Samsung™ HBM, which has a different voltage from what I gather.
the Vega 64 bios contain no way of using Hynix™ HBM and are not compatible.
if your cards do have Samsung™ HBM2 then just tune them to the max using the Wattman tool and maybe a software powerplay table which is added to the bios.
make sure you know what your doing, you will be adding to the registry and will need to be able to remove it if you need to, but probably wont.
in this thread you will find the files and the info to change your registry.
OP reconstructed, some attachments/links still need resolving. Last update: 29/10/18 Warning: Using this guide to edit your bios will void your warranty (if card has one). This guide is provided assuming a user knows implications of what they are doing. I accept no responsibility for damage...
www.overclock.net
below is my powerplay table for the MSI™ Radeon™ RX Vega 56 air boost oc.
MSI_air_boost_oc_100 (2).zip
you just need to unzip and double click the file to attach it to the registry and then reboot.
you will gain 100% to the power limit instead of 50% and have a base of 220w instead of 165w.
the location of where it is in the registry is located at the top of the reg file, just edit instead of open for that information.
it will be placed at this location: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0000]
the best settings I have are 4.5% overclock on my rig, which is 1697mhz and HBM at 900mhz with no changes to HBM voltage or clock voltage.
you can just set the power limit to max as it only takes what it needs to run, but about 264w is what the water cooled card AMD™ Radeon™ RX Vega 64 at 1750mhz uses.
the amps has also been changed and is 400a instead of 300a, but I don't think this has any effect.
good luck and have fun.
best regards,
MrPerforations
P.S great Time spy score, mine maxed out at 13000 for two cards with the AMD™ Ryzen™ 7 1700 @ 3750.