1. Memory sticks don't analyze RAM, they are the RAM. The numbers represent the speed of the RAM, meaning how fast it can send data to where it is needed.
2. go to bios and set multiplier to higher multiplier. like 100x8 to 100x10
3. doesn't affect it alot good ventilation can keep it running a normal lifespan.
4. DDR3 (1333 or more)