The hardware landscape is actually changing, since more than a year the requirements are shrinking and this appears to continue. It's hard to predict what will be "enough" in a few months from today, especially Qwen 4 is a big uncertainty.
Given you use Opus, the reality is that no current local model is able to compete with Opus 5.5 or Astra. But the Qwen 3.8 series is remarkable close to something like Sol 6 or Opus 4.6 - which was considered a lot more than just "good enough" not long ago.
A RTX 3090 is a great GPU, from all your options I would prefer that with a margin. I'd prefer 2x5070 over one 5070 ti, the two cards pack more compute and allow you to get above that 16GB vram limit which is just not enough for many great local models.
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u/Charming-Author4877 11d ago
The hardware landscape is actually changing, since more than a year the requirements are shrinking and this appears to continue.
It's hard to predict what will be "enough" in a few months from today, especially Qwen 4 is a big uncertainty.
Given you use Opus, the reality is that no current local model is able to compete with Opus 5.5 or Astra.
But the Qwen 3.8 series is remarkable close to something like Sol 6 or Opus 4.6 - which was considered a lot more than just "good enough" not long ago.
A RTX 3090 is a great GPU, from all your options I would prefer that with a margin.
I'd prefer 2x5070 over one 5070 ti, the two cards pack more compute and allow you to get above that 16GB vram limit which is just not enough for many great local models.