Some of the current used to reverse spintronics' magnetic direction dissipates, but alters magnetization increasing efficiency up to 3X

https://www.eurekalert.org/news-releases/1095490

"spintronics consume less power/ more non-volatile, but now, using spin losses as energy to induce magnetization switching enables ultra-low power spintronic devices... natural loss of spin allows magnetic materials to spontaneously switch their internal magnetization direction without external stimuli... the greater the spin loss, the lesser the power required to switch magnetization, increasing energy efficiency up to 3X... scalable, compatible with existing processes... ultra-small/ low-power AI semiconductor devices"