DDR3 memory: is PC3-10666 compatible with PC3-12800


OK I have a motherboard which supports DDR3 memory. Currently I have 2 * PC3-10666 2GB in it (4GB total). I plan to remove them and replace them with 4 * PC3-12800 2GB (8GB total).

My motherboard supports:

4 x DIMM, Max. 8 GB, DDR3 1600*/1333/800 Non-ECC,Un-buffered Memory
Dual channel memory architecture

*Overclock speed

Can I safely assume that my new PC3-12800 DIMMs will work with my motherboard (which uses PC3-10666 currently)?

Best Answer

  • The motherboard specification says it will take 1600 if you overclock. So yes, you can use PC3-12800, since that has a 800 mhz bus speed. The Asus BIOS should over clock it on first boot automatically.

    It's been a while since I've purchased RAM; it didn't click that PC3-12800 is an 800 mhz bus with a 1600 data rate.

    tl;dr = PC3-12800 is 1600 data rate.

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