Flashing an RX Vega 56 with a Vega 64 BIOS will not unlock additional shaders

These Vega 57-63

Flashing an RX Vega 56 with a Vega 64 BIOS will not unlock additional shaders

Flashing an RX Vega 56 with a Vega 64 BIOS will not unlock additional shaders

 
Over the past few days, there have been several reports from RX Vega 56 users that they have been able to unlock additional shaders on their GPUs by flashing onto it an RX Vega 64 BIOS, with other reports stating that their RX Vega 56 has shipped with over 56 active CUs out of the box. 
 
These reports have led many to call AMD's RX Vega 56 binning inconsistent, saying that some users are getting more CUs (and more performance) for free while others are advocating the use of BIOS flashing tools to "unlock" additional stream processors on their GPU. 
 
Both of these reports are false, with these incorrect GPU core/Stream processor counts being read by the program resulting in a data readout that is giving users incorrect data. This has been confirmed to be a "under-the-hood" bug in version v2.3.0 of GPU-Z, which is currently being fixed by Techpowerup
 

This means that "shader unlocking" is not possible on AMD's RX Vega GPUs, and that those who are reporting that their GPU has over 56 active CUs are simply mistaken. The extra performance that they are experiencing is due to core clock speed increases, increased HBM2 memory speeds and higher power limits.  

  
Flashing an RX Vega 56 with a Vega 64 BIOS will not unlock additional shaders

(An example of a buggy GPU-Z reading for an RX Vega 64)

  

This bug will be addressed in a future version of GPU-Z. 

Update - GPU-Z v2.4.0 has been released, which contains a fix for this issue. 

 

You can join the discussion on GPU-Z's shader reading bug for AMD's RX Vega 56 on the OC3D Forums

 

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Most Recent Comments

07-09-2017, 14:47:39

NeverBackDown
Oh ok gotcha.

AFAIK atm Vega 56 has cores lasered off, so it's impossible to activate them right now. It is more than likely due to yields. In the future after supply and yield rise, I am sure we will get a few cards than can unlock cores.Quote

07-09-2017, 14:54:10

WYP
Quote:
Originally Posted by NeverBackDown View Post
Oh ok gotcha.

AFAIK atm Vega 56 has cores lasered off, so it's impossible to activate them right now. It is more than likely due to yields. In the future after supply and yield rise, I am sure we will get a few cards than can unlock cores.
It is unwise for AMD to leave things so that they can be unlocked like that, though I can see why people are trying it.

I just remember the days of CPU core unlocking on AM3 with the old Phenom II CPUs. Unlocking a dual-core black edition into a full quad core!Quote

07-09-2017, 14:56:05

NeverBackDown
Yeah AMD has quite a history of letting things these happen. It's why I said in the future possibly. Under new management though, who knows? I doubt it but I would certainly buy a 56 if I could unlock it to a 64Quote
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