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Intel's next-gen Arrow Lake GPU will have new Xe-LPG Plus Architecture with XMX
(www.tomshardware.com)
this post was submitted on 24 Nov 2023
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The thing about codec support is that you essentially have to add specific circuits that are used purely for decoding and encoding video using that specific codec. Each addition takes up transistors and increases the complexity of the chip.
XMX cores are mostly used for XeSS and other AI inferencing tasks as far as I understand. While it could be feasible to create an AI model that encodes video to very small file sizes, it would likely consume a lot of power in the process. For video encoding with relatively high bitrates it's more likely an ASIC would consume a lot less power.
XeSS is already a worthy competitor/answer to DLSS (in contrast to AMD's FSR2), so adding XMX cores to accelerate XeSS alone can be worth it. I also suspect Intel GPUs use the XMX cores for raytracing denoising.
Ah, got it. I'm guessing this is why Intel leaves those types of circuits for the GPU. Then I'm looking forward to seeing what battlemage brings, and how these innovations trickle down to the iGPU