Been running this all day; I haven't tried using anything much but everything basic (text, call, email, web surfing) works great. Google Play works fine for me. Yes, if I run this at 1.2GHz, battery tends to wear out quicker but not horrendously quicker. I'm been using 800MHz at max for the last 4 hours and this thing still feels like it's on crack; with 800MHz, I still get scored 2806 on AnTuTu . I'm going to do a kernel that maxes out at 1.0GHz but undervolt everything; I may even do one at 800MHz max since everything is still butta smooth with the 3D boost. Good enough for me as I don't play games.