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Vermin Supreme 2020
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25,769 Posts
Wasn't DX12 supposed bring Mgpu back unless I read it all wrong thought it was supposed to support duel+ GPUs better and make it so the Devs didn't have do the work to add it into games.
you did not read wrong. it was most definitely a hype point made by MS many times during the vaporware days.

You blame the software for an unstable overclock?

DX12 uses more of the silicon so it makes sense you could get worse max overclocks using it, but that would be true with any new API. That is the point of the new APIs. I am all for Vulkan over DX12 but this simply cannot be a reason for that preference. Vulkan is also very likely to have a lower max OC with the same title compared to DX11 (unlikely anyone would actually do that), it can use more of the silicon too.
i read the same complaints from other folks on the low end of the hardware spectrum, which doesn't make sense. In the titles where vulkan exists, it runs better, on my 2080ti. though admittedly, I haven't hopped into many titles where its the secondary option. (IE: Like DX12 is the secondary option in BL3, and is thus more unstable. or at least was.)

either way, in RDR2? Vulkan was much more stable. it also has decent MGPU support for that specific title.
 

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Politically incorrect
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9,214 Posts
the more reasons to use vulkan, the better.

i absolutely hate dx12, real world example:

Division 2 ran on dx11
+85 core
+600 mem
On my 1660ti and fully stable

Division 2 ran on dx12
had to lower core to 55
and mem to 400
In order to reach stability.

Same story with forza horizon 4, abyssymal performance with overclock applied.
You haven't provided any performance numbers as DX12 performs better than DX11 at stock, and thus you are just looking at arbitrary numbers rather than at the result.
 

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973 Posts
during both tests i had my gpu running at 90-100% im playing division in 1440p almost all on max, my screen is 75hz. I will provide proper benchmarks today after i come back from work.
 
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