1.35v OR 1.5v memory? which is better if there is a choice?

I am looking at this Mushkin 16GB at 1.35v Newegg.ca - Mushkin Enhanced Essentials 16GB (2 x 8G) 204-Pin DDR3 SO-DIMM DDR3 1333 (PC3 10600) Laptop Memory Model 997078 but I also see this G.Skill 16GB at 1.5v Newegg.ca - G.SKILL 16GB (2 x 8G) 204-Pin DDR3 SO-DIMM DDR3 1333 (PC3 10600) Laptop Memory Model F3-10600CL9D-16GBSQ and I cannot decide....

Will the 1.35v create less heat because of the lower voltage? Or increase batttery life? Significantly?

Is G.Skill a better/higher quality overall brand than Mushkin?

Any other considerations? This is for M11X R3, but any M11X should be relevant.

 

It will create less heat and increase battery life, but not by a significant amount. I would worry more about RAM timings and speed. Since both of the models have the same speed, timings, and price, I would go with Mushkin. Both of the companies have very good reviews.

 

There is not a noticeable difference between them. Any of them would be fine for your PC.

 

I am thinking that with a laptop mobo such as this, the voltage is likely tied to whatever the motherboard is set to output to the RAM, thus if you use 1.35v modules the boards regulators may just push 1.5v through them regardless what voltage the RAM is rated.
Unless the processor memory controller can sense what RAM you are using a change accordingly to suit?

 

For older systems yes it will just push through 1.5v, so no advantage to the 1.35v ram unless you intend to overclock it in which case it is over volted by default and will likely clock better.