2015-03-26, 23:00
Are you using a pi2? I find running the ram at a slightly lower 483 much more stable even with arm at 1100 and core at 500. With sdram at 500 I get occasional lockups even with core and arm dropped significantly and over volt at 6. For me, arm 1100, core 500, sdram 483 and over volt 2 is completely stable.