How come one blog post with the torrent magnet of mistral says I need 24g vram but ollama says I only need 8g regular ram minimum? If I wanted to experiment wi

How come one blog post with the torrent magnet of mistral says I need 24g vram but ollama says I only need 8g regular ram minimum? If I wanted to experiment with working with models and finetuning offline should I just save for a 32g vram+ video card?