Fan impeller with sections having different blade design geometries

An electronic device, comprising:

• a housing that defines an internal volume;
• a display coupled with the housing;
• a heat-generating component located in the internal volume;
• and
• a fan assembly located in the internal volume and configured to cool the heat-generating component, the fan assembly comprising:
• a fan housing that defines a first fan inlet, a second fan inlet, and a fan outlet,
• an impeller located in the fan housing, the impeller comprising:
• a separating structure comprising a first surface and a second surface opposite the first surface,
• a first set of impeller blades extending from the first surface and aligned with the first fan inlet, the first set of impeller blades having a first impeller blade geometry, and
• a second set of impeller blades extending from the second surface and aligned with the second fan inlet, the second set of impeller blades having a second impeller blade geometry different from the first impeller blade geometry.

A fan impeller for cooling one or more heat-generating components of an electronic device, the fan impeller comprising:

• a first set of impeller blades having a first blade geometry;
• a second set of impeller blades having a second blade geometry different from the first blade geometry;
• and
• a separating structure that separates the first set of impeller blades from the second set of impeller blades.