The "Crazy" in the name is not hyperbole. It pushes the Vita to its thermal limit. Expect 2.5 hours of battery life instead of 4. But for the silky smooth gameplay, it is worth it.
Your PS Vita must already be hacked (running Enso/3.60-3.74 firmware) and have SD2Vita configured. psvitaretroultimateliteversion30crazymac