A socket assembly includes an electrical interconnect having an insulator having apertures. The electrical interconnect includes primary contacts and secondary contacts received in corresponding apertures. The primary contacts include a primary conductive polymer column having upper contact tips and lower contact tips for electrically interconnecting first and second electronic packages. The secondary contacts include a secondary conductive polymer column having upper contact tips and lower contact tips for electrically interconnecting the first and second electronic packages. The contact tips of the secondary conductive polymer columns have a different shape from the shape of the contact tips of the primary conductive polymer columns.