# What's the difference between turning up the resolution vs. using smoke high resolution in the Blender smoke simulator?

In a smoke simulation, what is the difference between using the Smoke High Resolution checkbox, as opposed to simply increasing the resolution? I understand that for some mysterious reason, the limit of the resolution is 512, but if I'm doing a simulation that won't need that many divisions, is there really a difference? I've noticed that if I bake a fire simulation without Smoke High Resolution enabled, it will usually only use one CPU at 100% at a time, whereas if I do enable it, all my CPUs are at 100% (and it takes a whole lot longer to bake).

• @cegaton Okay, I think I understand that, but what does that link have to do with it? – Anson Savage Mar 25 '16 at 21:17
• oops... something else on the clipboard... – user1853 Mar 25 '16 at 21:30
• blender.org/manual/physics/smoke/baking.html?highlight=bake – user1853 Mar 25 '16 at 21:31
• @cegaton Oh, okay – Anson Savage Mar 25 '16 at 21:31
• There's a bit info in the manual too. – Mr Zak Mar 26 '16 at 12:18