Asgard shields far outstrip the much more primitive Goa'uld shields in effectiveness. Despite this, they become considerably less effective when facing foes of a comparable technological level. The exact strength of an Asgard shield, like most Asgard technology, appears to be relative to the amount of power channelled into them, meaning the shields on Asgard ships are much more powerful than those of Tau'ri spaceships unless a Zero Point Module or equivalent power source is interfaced, which renders them even more powerful than the shields featured on Asgard vessels. The most advanced shields ever developed by the Asgard were equipped on the Odyssey before they committed mass suicide, allowing the ship to survive sustained fire from the central weapons of multiple Ori warships for several