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World of Warcraft - Item Upgrading The ability to upgrade items allows players to raise the level of their armor, weapons and trinkets. The majority of upgrades boost numeric stats whereas others have special effects. Item upgrades are an essential element of the player's progress in Path of Exile. They help improve gear/ship damage and overall effectiveness in combat. Typically items that don't vary in terms of requirements after upgrading (like Eth Titans) will see a slightly less trade value than the unup