Pikachukaki

Okay.
I mean power control. Right now it's at 0% (+0) which means you're not allowing it to draw more power than the stock design from Asus. Try +20%.
 
Definitely 1.3V. 13V would fry that thing so fast.

They only need to be the same speed not the same brand in matching pairs.

Well, it sounds like a combination of pikachu, and bukakke. #justsaying

Having enough is far more important than how fast it is. Once you run low on memory the system resorts to page faults which is easily 4x slower than accessing system memory.
 
What I don't get is 667 MHz is 1333 MHz memory as long as it's in a dual channel configuration. So all of your memory should run at 1333 MHz.

Don't worry about going at 666 look at Linux's video about ram speed

Your username gives me horrible mental images of bad things being done to a pikachu.

I would say getting an ssd would get you far better performance over ram for a little more money then ram, but that's if you can afford x amount more.