The amount of processing resources that you want the logical partition to have when you activate the logical partition that is associated with this partition profile.
If the label reads Desired processors, the logical partition is to have a specific number of dedicated processors. This is then the number of processors that are dedicated to the logical partition.
If the label reads Desired processing units, the logical partition is to share the processing power in the shared processor pool. This is then the number of processing units that you want the logical partition to have on activation.