|Two points about the RAM. First point is to buy RAM that adheres to the JEDEC standard of 1.5V. Many faster RAM modules may have specs that show as much as 1.65V. IMO those are nothing more than juiced RAM. |
Second point is that most motherboard manufacturers have a list on their website of RAM they have tested on that model board. Buying RAM off that list should assure you of trouble free operation. This becomes even more important when overclocking.
I just thought of a third point. Be sure you buy RAM in matched sets. This is RAM that has been tested by the manufacturer to assure the RAM modules are as close as possible to identical.
See the link below.
In addition to the above you can use dual channel kits and buy 2 kits to fill the 4 slots or buy a quad channel kit which will fill all 4 slots with perfectly matched modules. If you buy a dual channel kit be sure to mark the modules as a pair so if later on you buy another kit that is supposedly the exact same you do not mix the two kits up. see the link below for examples of dual channel and quad channel kits.