Nope, 1.65v memory if fine for SB CPUs. Just, don't go any further than that. I have heard even 1.7v is OKAY. I wouldn't do 1.7v though. I run ,y SB 2500k with 1.642v memory and it is fine.
Not to criticize your advice but I'd be weary of grammar that poor. Yes, 1.65v memory should be fine but it is over the rated voltage range for Sandy bridge and might not work. if you have the system then you might as well try, worst that should happen is you reset the BIOS and try again, no big deal. If something somehow gets fried then use your warranties, but I have never had a component get fried from this nor have I heard of it happening.