The main differences between the Ninja Professional and Ninja Ultima blenders is that the Ultima is faster with more blades, more setting options and a 2.5 peak horsepower motor. The Ultima is also more versatile than the Ninja Professional, as it can also act as a food processor and juicer.
The Ninja Professional Blender has a 1000-watt motor, comes with a 72-ounce pitcher and has three speeds. It can crush ice, blend and puree most soft and semi-soft ingredients. The pulse setting can process and chop some hard foods as well.
The Ninja Ultima Blender has a 1500-watt motor, a 10-speed dial and powerful blades that reach up to 24,000 revolutions per minute. It also comes with a 72-ounce pitcher. Some Ultima models come with additional accessories that expand the blender's versatility. The Ninja Ultima Kitchen System, for example, comes with an 8-cup food processing bowl and two to three 16-ounce Nutri Ninja Cups for individual servings.
All models of Ultima blenders feature a dual stage blade system, with a bottom blade and top blade that spin at different speeds. The faster speed and powerful blades of the Ninja Ultima allows it to crush ice completely and break down most fruits and vegetables with relative ease.