I want to buy a new GPU mainly for SD. The machine-learning space is moving quickly so I want to avoid buying a brand new card and then a fresh model or tool comes out and puts my card back behind the times. On the other hand, I also want to avoid needlessly spending extra thousands of dollars pretending I can get a ‘future-proof’ card.

I’m currently interested in SD and training LoRas (etc.). From what I’ve heard, the general advice is just to go for maximum VRAM.

  • Is there any extra advice I should know about?
  • Is NVIDIA vs. AMD a critical decision for SD performance?

I’m a hobbyist, so a couple of seconds difference in generation or a few extra hours for training isn’t going to ruin my day.

Some example prices in my region, to give a sense of scale:

  • 16GB AMD: $350
  • 16GB NV: $450
  • 24GB AMD: $900
  • 24GB NV: $2000

edit: prices are for new, haven’t explored pros and cons of used GPUs

  • wewbull@feddit.ukEnglish
    3·
    1 month ago

    So you could buy 2xAMD 24GB and a good power supply to power them for a 4090.

    • comfy@lemmy.mlOPEnglish
      3·
      1 month ago

      I didn’t even think of dual cards, because I have an old & budget motherboard with one slot. But 2 x 16GB GPUs and a new motherboard (and if necessary, new CPU) and PSU and it might even still be cheaper than a 24GB NVIDIA for me. Of course I’d have to explore the trade-offs in detail because I’ve never looked into how dual cards work.

      (but truth be told, I just as easily could settle for a 1x16 GB if I’m confident it would be able to train, even if slowly, AuraFlow or FLEX LoRas for the upcoming Pony v7 model. It’s just a hobby.)

      • wewbull@feddit.ukEnglish
        4·
        1 month ago

        Yeah. I don’t think dual cards is a great solution as I don’t think they can both be made to work on the same job at the same time, but maybe if you were generating many images it would make sense.

        I don’t know, but maybe somebody else has experience.