Can these be hotplugged to the PCI-E connectors or should I shut down PSU?  Ive noticed I get approximately the same hashrate between 340mhz-360mhz, anyone else experience this?  Also I was wondering if it is safe to run a 25gh/s butterfly labs miner with 5 klondikes on a Silverstone ST60F-ES PSU?  I calculated 480w, 60wx5(klondikes) and 180w for the Little Single 25gh.  I'm not quite sure exactly what wattage the 25gh/s runs at i've only seen one person post the power specs of that unit.  I'ts been running 48hours stable with them all connected but do I need to worry about blowing the PSU?