Which RAM will be compatible with H61M-S2PV (rev. 2.2) motherboard?

shaon007

Commendable
Aug 16, 2016
3
0
1,510
I have a H61M-S2PV (rev. 2.2) motherboard and trying to add extra RAM in it. I can see that this motherboard supports DDR3 1333/1066/800 MHz memory modules. I just found out that my existing RAM is a 665.1 MHz DDR3.

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So, now i have 2 confusions:
1. Which RAM should i buy for my pc - which will also support and be used side by side with my existing RAM 665.1 MHz DDR3 ?

2. And how is my motherboard supporting my existing ram(665.1 MHz DDR3)?