It looks like EA wants to keep up in being worst company and will not let Ubi take their place. According to Guru3d, they put activation limit. And yes, changing even one piece of hardware lowers your activation number. You put more memory, you are a pirate... And how dare you put new gpu in your system, you thief. Guru3d people write, that to properly test gpu setting on various cards, they would need 3 accounts. And imagine keeping this game as benchmark for hardware side...
Source: http://www.guru3d.com/news-story/ea-infects-battlefield-hardline-with-new-ghastly-drm.html
Source: http://www.guru3d.com/news-story/ea-infects-battlefield-hardline-with-new-ghastly-drm.html