I'm running 1.45v QPI too, for now. There is no evidence that this will damage the cpu so far. Some people with older, higher voltage DDR3 have to set at least this to run their memory at stock speeds.
There are people running higher without issues..
http://www.xtremesystems.org/forums/...d.php?t=207972
TJ07 | Corsair HX1000W | Gigabyte EX58 Extreme | i7 930 @ 4ghz | Ek Supreme | Thermochill PA 120.3 | Laing DDC 12v w/ mod plexi top | 3x2gb Corsair 1600mhz | GTX 680 | Raid 0 300gb Velociraptor x 2 | Razer Lachesis & Lycosa | Win7 HP x64 | fluffy dice.
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