Question 1

hey i have mac book pro 2012 15''.
i am using 8gb single module ram with 1600 mhz 
your product is compatible for my mac ?

Accepted Answer

Technically it should work.  But to ensure optimum performance and to ensure the memory can work with the old memory it is recommended to used matched memory. That is when both modules are the same configuration (same access speeds, same number of RAM chips on the module,etc).  If they are not matched the same you will either get a memory error (very unlikely) or the system will not benefit from the performance increase gained by interleaving the memory (running in dual channel mode).

Question 2

Is this a single 8G module, or a 2X4G set?

Accepted Answer

This is a single 8G module.  See the manufacturer page of the part number and it will confirm the part number is for one piece.

I used two if these to upgrade a Mac mini to 16G memory

Be weary, Macs designed to use ddr3 1333 won't work with the 1600, however I bieve those are also the same ones with an 8 gig total limit.

Question 3

will this fit a hp notebook 2000 wanting to do a ram upgrade ?

Accepted Answer

Don't know, but Apple memory costs more than PC memory.  You should be able to find a less costly memory chip for the Jo that is designed for it instead of designed for an apple.

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