RAM compatibility check

i have 4gb ram with 1066mhz frequency in slot 1,can i have another 4gb ram with 1333mhz freq in 2nd slot?
sony vaio vpcel1e1e
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More about ram compatibility check
  1. Not a great idea. For memory to work right you need to have matching memory in the slots ideally. Otherwise the system may not be stable (i.e. may crash, freeze, not boot up, etc).
  2. Best answer
    It should work as long as the 1066 ram is in the primary ram slot. It is kinda a mixed bag with such things though.
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