I bought another 2x2GB of memory to go with the 2x2GB I got when I built my PC in Jan. The original RAM is CMX4GX3M2A1600C9 rated at 1.65V but although what I ordered online was listed as the same I've been sent CMX4GX3M2B1600C9 rated at 1.5V. There's a lot of confusion about what voltage the B models are meant to have as some have been labelled 1.65V and Corsair employees have said on forums that it is meant to be 1.65V...whereas retailers have said that Corsair contacted them saying that 1.65V is a mislabel
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Does anyone know for definite what voltage CMX4GX3M2B1600C9 is meant to have and if it is 1.5V shall I just send it back as my current RAM is running at 1.65V?

Does anyone know for definite what voltage CMX4GX3M2B1600C9 is meant to have and if it is 1.5V shall I just send it back as my current RAM is running at 1.65V?