DDR3 question

I am wanting to upgrade/add memory to my laptop and I am in confusion as to all the different types of compatible memory available.

My system requires: DDR3 PC3-12800 • CL=11 • Unbuffered • NON-ECC • DDR3-1600 • 1.35V

You'd think that the above specifics are just that; specific. Why so many different cards available? Why the vast difference in price for a card with the same specs? What's the difference in all of them?

Does it come down to the more $$ the more you're getting even though they appear "the same"?

Thanks in advance.

Memory is like most things there are only a few manufacturers for the chips on the board and a whole bunch of builders, just stay within the specs of your MB (204 pin DDR3 1.35V). I always go with lifetime warranty, same mem chips in all slots, equal timings and lower CL and buy all the GB affordable. Crucial, Kingston, PNY, and Wintec are good choices. Be careful to compare the specifications they are generally the same, check the manufacturers website for better details. More $$ only gets more capacity and speed, unless it is a OC/Gaming rig them it gets more complicated and expensive. Hope this helps.

Thank you. That did help!