Container packages
KitchenAid Pure Power: one personal jar or two?
The KitchenAid Pure Power personal-jar packages are easy to confuse because each includes both a 68-ounce countertop jar and a much smaller travel-style cup. The useful comparison is not “large blender versus personal blender.” It is the number of 16-ounce personal jars included alongside the same broad package format: KSB2079ER supplies one, and KSB2078DG supplies two. Both exact U.S. product pages identify a main BPA-free plastic jar, a lid and a personal jar assembly with travel lid; the two-cup KSB2078DG lists the personal assembly twice.
Choose the package by how many cups you will actually use
If a single cold personal blend is enough, the Empire Red KSB2079ER avoids adding a second cup to the cupboard. If two people routinely want separate take-along portions, or you prefer to keep another clean vessel ready, the Matte Charcoal Grey KSB2078DG is the package with two personal jars. The two cups are not two motors: the single blender base serves one vessel at a time. They are extra containers to blend in sequence, carry, and clean. KitchenAid's current pages list other finish options in the family, but the exact model suffix still matters when checking a specific retailer listing.
Both packages also include the same nominal 68-ounce full-size jar. That changes what the finder should do with capacity. For family-size batches, use the large-jar operating plan, not the 16-ounce personal-jar plan. For a cold single serving, choose the personal plan. A package can contain both vessel types without making them one interchangeable operating setup. A request to blend 64 ounces in the 16-ounce cup is contradictory; the correct result is no match, not a claim that a separate included jar fixes the requirement.
What the personal jar may and may not do
The product pages describe the 16-ounce vessel as a Personal Blender Jar for cold blends that can travel. The exact W11797080A owner manual makes the limit more explicit: do not blend hot liquids or ingredients in the Personal Jar, and do not use it for grinding. Treat the travel cup as a cold-serving setup. Do not assume it is a replacement for the larger jar when making a hot mixture or dry ingredients.
The full-size jar has a different hot-use instruction. KitchenAid's product-page footnote says hot liquid should not exceed 40 ounces. The manual says to leave the center cap in place over the full-jar lid opening, start at the lowest speed, and increase slowly. Follow the exact directions rather than using the full nominal 68-ounce jar capacity as a hot-fill target. This is one reason jar size and usable task are not the same question.
The control panel is the same kind of choice
Both product pages describe ten speed levels operated by a precision dial, smooth adjustment between settings, and Pulse. The pages also name three cycle controls: Smoothie, Ice Crushing and Clean. A person who wants manual adjustment has it; a person who appreciates named buttons has them too. These are not competing packages with different control systems. A button name is not a sensor or a promise of texture, and Clean does not mean every part of the machine should go in water.
KitchenAid advertises 1,700 watts peak power on these pages. That headline is a manufacturer rating, not evidence that one of the two personal-jar packages blends better than the other. The product pages describe the same main jar and base family, and the additional cup on KSB2078DG does not prove any difference in speed or output. Choose based on whether you will use one personal jar or two.
Care notes to check before you decide
The manual says to clean the blender and accessories after each use. For the full blender jar, it describes a short rinse routine: remove leftover contents, fill the jar halfway with warm water, add one or two drops of dish soap, secure the lid, run the Clean function for 15 seconds, then empty and rinse. The small personal vessel, blade assembly, lids, large jar and lid center cap are listed as top-rack dishwasher-safe. The base and cord are not dishwasher parts and must not be immersed; unplug before wiping them with a warm damp cloth. Blades are sharp, and parts should be attached or removed only with the machine switched off and unplugged.
That routine matters more with two cups than with one: KSB2078DG includes a second personal blade assembly, lid and vessel arrangement. More package contents may help a shared household, but it also means more small parts to manage. Do not count the two-cup kit as lower effort unless the additional ready-to-carry cup genuinely solves a routine you have.
How to set a useful requirement
Use the full-size 68-ounce jar if your essential need is a 64-ounce nominal container floor. Add a requirement for one personal jar if a portable 16-ounce cold blend is part of the box; choose at least two if you need a pair. Selecting a personal jar as the vessel for the actual operation changes the capacity question: the matching setup is 16 ounces, not 68. The optional jar-system and included-count questions are intentionally separate so you can ask “does this package come with a spare?” without pretending the small cup serves a family batch.
For the package differences, read the KSB2079ER review for one cup and the KSB2078DG review for a pair. If neither personal cup matters, compare the Pure Power full-jar-only entry in the KitchenAid directory or wait for its own assessment rather than assuming it is the same package. These are new-package comparisons; they do not establish a specific warranty duration, an independent texture result or a guarantee that every cup recipe can be filled to the rim.