There's no Intelligence minimum to cast spells, nor do more intelligent wizards get more spells. So playing a high strength wizard as a warrior becomes viable early on, especially if you only cast non-concentration and damage spells. Burning hands is the only AOE spell in the game right now, I think, and you get a lot more chances to use it if you're on the front line.
You still don't really have the hit die to do it well, but by level 4 you might have something.
