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Will DDR3 1066 mac RAM work in a DDR3 1333 slot?

Hello all, new PC builder here. Built a system awhile ago that I currently have an EVGA P55V motherboard sitting in my PC with 2 Corsair XMS3 RAM Chips in it at the moment (DDR3 1600 PC312800). I recently came across a pair of Kingston KTA-MP1066/4G RAM chips and wondered if I could use 2 of them to go from 4gb ram to 8gb ram or if they would be incompatible with my motherboard.

Current motherboard: EVGA P55V 120-LF-E651-TR LGA 1156 Intel P55 Micro ATX Intel Motherboard

Current RAM: CORSAIR XMS3 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CMX4GX3M2A1600C9

New RAM: Kingston 4GB DDR3 1066 (PC3 8500) ECC Mac Memory Module w/ Thermal Sensor Model KTA-MP1066/4G

Any response would be greatly appreciated, and thank you for taking the time to have a look at this.
5 answers Last reply Best Answer
More about ddr3 1066 mac ram work ddr3 1333 slot
  1. The Kingston is ECC? If so it will not work in a non ECC motherboard. ECC memory is generally only found in servers although for some reason Apple decided to use it in Macs.
  2. anort3 said:
    The Kingston is ECC? If so it will not work in a non ECC motherboard. ECC memory is generally only found in servers although for some reason Apple decided to use it in Macs.


    Not sure how I would find out if its ECC memory
  3. Best answer
    Quote:
    Kingston 4GB DDR3 1066 (PC3 8500) ECC Mac Memory Module w/ Thermal Sensor Model KTA-MP1066/4


    It is. It will not work.
  4. anort3 said:
    Quote:
    Kingston 4GB DDR3 1066 (PC3 8500) ECC Mac Memory Module w/ Thermal Sensor Model KTA-MP1066/4


    It is. It will not work.

    Gotcha, ty for the reply, very much appreciated
  5. Sure thing. Glad to help :)
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