It should do 1600 x 1200 4:3. From my understanding it needs to be calibrated to shine - perhaps more so than some other models. But its overkill on powerpoint is so great that it is no wonder noone answers. If you want to do Powerpoint in a room with ambient light I would imagine Lumens might be important, and this projector has a rating of only 1000 lumens.
I'll let you know more when and if I get my hands on one