Voltage in ram matter?

[ilikemoneygreen]

I am looking to upgrade my laptop memory. currently i have 6gb of micron technology, (2gb + 4gb). Im thinking about upgrading to this:

http://www.amazon.com/Corsair-Vengeance-Laptop-1600MHz-CMSX16GX3M2A1600C10/dp/B0076W9Q5A/ref=sr_1_2?s=electronics&ie=UTF8&qid=1343905182&sr=1-2&keywords=pc3+12800+vengeance+laptop

The voltage of the Corsair says it is 1.5v. My current cpu-z check says my Micron Technology ram is running at 1.28v. My laptop is a dv6 7000. I dont really know much about ram, so to be simple here, can i put that ram in my pc or will it not have the right voltage? maybe the system automatically pick the voltage of the ram?

Also if it got:
http://www.amazon.com/CORSAIR-Vengeance-204-Pin-1600MHz-CMSX8GX3M2A1600C9/dp/B006EWUOL8/ref=sr_1_3?s=electronics&ie=UTF8&qid=1343902201&sr=1-3&keywords=pc3+12800

instead of the 16gb, go with these two 4gb sticks, with the lower latency at 9-9-9-24, would my system run faster then the 16gb or would the amount of memory just be worth it to get? i play flight gear a lot and seem to be maxing out the 6gb of ram so im thinking either of these would be great.... thoughts?

****Edit The manufacture page on the Micron ram says its voltage is 1.35v.
Think i just found the brand of memory but in an 8gb Stick :
http://www.amazon.com/Crucial-Single-PC3-12800-Notebook-CT102464BF160B/dp/B006YG8X9Y/ref=sr_1_4?s=electronics&ie=UTF8&qid=1343909768&sr=1-4&keywords=12800+sodimm+micron
If i go with two of these the voltage would be 1.35 like my system is now but its a CL 11 and not a CL 10 like the Corsair 8gb stick or a CL 9 like the Corsair 4gb stick. So if i went with the Crucial stick would that save my Pc a lot of power? Would the bump to 1.5v be noticable in power draw and/heat (thats if i can even put a 1.5v in their).

 

[jaquith]

References:
CPU: Intel i7-3610QM - http://ark.intel.com/products/64899/
Memory Types DDR3/L/-RS 1333/1600
Chipset: Intel HM77 - http://www.intel.com/content/www/us/en/chipsets/performance-chipsets/mobile-chipset-hm77.html

On a Notebook or a PC there's little differences in 'real world' with lower CAS timings @ DDR3-1600 Frequency, and unless you're rendering or gaming there's little use from having more than your 6GB of RAM. In fact the more the RAM the longer it takes to both Sleep & Wake (Hybrid/Hibernation); i.e. making your Notebook SLOWER. Open the Resource Monitor and Open your typical amount of applications, Documents, etc and see if there's ANY FREE memory -- if there is then there's no need to upgrade your memory from 6GB to 16GB.

DDR3L runs at both 1.50v and 1.35v so on a laptop it's good to further reduce power drain IF the OEM BIOS will actually allow the lower voltage; same with DDR3-1600 vs DDR3-1333 IF the OEM BIOS will actually allow the higher frequency.

IF CPU-z in the 'Memory' tab shows DRAM Frequency = 800MHz (DDR3-1600) then you'll benefit from the faster Frequency, and IF the BIOS offers either 'DRAM Frequency' (XMP) or DRAM Voltage -> 1.35v~1.50v then you'll benefit from DDR3L RAM (1.35v). Also do NOT confuse the 'SPD' tab with 'Memory' tab --- meaning the SPD tab shows what's available (encoded) in the RAM and NOT what it's actually running. CPU-z is limited to show in the 'Memory' tab Frequency and CAS Timings. For more information you'll need and application like AIDA64 Extreme (IF Probes are available) or refer to your BIOS.

The CMSX8GX3M2A1600C9 or CMSX16GX3M2A1600C10 are good kits...

AIDA64 Extreme - http://www.aida64.com/downloads

Resource Monitor: