nostr:npub126ntw5mnermmj0znhjhgdk8lh2af72sm8qfzq48umdlnhaj9kuns3le9ll should run wifi-only, if necessary.

For a lightning node I would say anything that has an Intel core i3 or i5 or i7 of any generation would work. Maybe even a Celeron would work. Or any AMD processor from the last 10 ish years.

Whatever you do, you will need a beefy hard drive. Ideally 2tb.