Legit Reviews discusses whether more than 1.65V on your memory is really deadly for a Core i7 processor and contacted popular memory makers to get their opinion on this issue. The bottom line is that running your old high-performance DDR3 memory at voltages above 1.65V is not a good idea because it can damage your processor.
However, the good news is that most memory makers will launch new triple channel memory kits that will run at voltage below 1.65V. Legit Reviews claims this isn't really a big deal as the new triple channel memory kits offer performance gains that are "out of this world".
Though, I'm sure some people who paid big bucks for their DDR3 modules will be pretty pissed.
"All of the memory companies we talked to informed me that they will have triple channel memory kits ready when the platform would launch, but none would give a specific date when this would happen. I also didn't find one company that hurt or ruined a processor by running higher than 1.65V on the memory kits, and a good number of the above memory companies said they are testing at voltages above 1.65V. What does this mean to enthusiasts and gamers around the world? It means that everything is fine and that these new triple channel memory kits are going to be the right choice for an Intel X58 Express platform..."