Steam Deck

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A place to discuss and support all things Steam Deck.

Replacement for r/steamdeck_linux.

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FSR 4 has been in development for 9-12 months already, and one of the biggest focuses is improving battery life for handhelds (www.tomshardware.com)

submitted 2 months ago by Fubarberry@sopuli.xyz to c/steamdeck@sopuli.xyz

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He specifically cited bad battery life on the ROG Ally and Lenovo Go, saying that getting only one hour of battery life isn't enough. The Steam Deck (especially the OLED model) does a lot better battery wise, but improving power efficiency should really help with any games that are maxing out the Deck's power.

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[–] thingsiplay@beehaw.org 8 points 2 months ago (6 children)

Here is my view and a small timeline:

FSR 1 (Jun 2021): Post processing. Can be used with any game, any graphics card on any system. Quality is not very good, but developers do not need to support it in order being usable.
FSR 2 (Mar 2022): Analytical and Game specific. Analyzes the content of the ingame in order to produce better output than FSR 1. Can be used only with games that have integrated support for. Still system and graphics card agnostic.
FSR 3 (Sep 2023): Improved version of FSR 2. Therefore the previous point applies here too, but has a bit more features and should produce better quality. It was late on arrival and was controversial at launch.
FSR 4 (maybe 2025): AI and hardware dependent. Not much is known, but we can expect that it requires some form of AI chip on the GPU. We don't know if it will be usable with other GPUs that have such a chip or is restricted to AMD cards. As this is analytical, it requires games to support this, therefore its Game specific as well. It's expected to have superior quality over FSR 3, maybe rivaling XESS or even DSR. But it seems the focus is on low powered weaker hardware, where it would benefit the most.

[–] remotelove@lemmy.ca 2 points 2 months ago (3 children)

I am curious as to why they would offload any AI tasks to another chip? I just did a super quick search for upscaling models on GitHub (https://github.com/marcan/cl-waifu2x/tree/master/models) and they are tiny as far as AI models go.

Its the rendering bit that takes all the complex maths, and if that is reduced, that would leave plenty of room for running a baby AI. Granted, the method I linked to was only doing 29k pixels per second, but they said they weren't GPU optimized. (FSR4 is going to be fully GPU optimized, I am sure of it.)

If the rendered image is only 85% of a 4k image, that's ~1.2 million pixels that need to be computed and it still seems plausible to keep everything on the GPU.

With all of that blurted out, is FSR4 AI going to be offloaded to something else? It seems like there would be a significant technical challenges in creating another data bus that would also have to sync with memory and the GPU for offloading AI compute at speeds that didn't risk create additional lag. (I am just hypothesizing, btw.)

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