Most people buy slow ram, and then just barely enough for their current needs without planning for the future. Then a year or two goes by and they are maxing out their ram without realizing it. In the old days it was easier because ram was expensive and motherboards didn't have much space for lots of ram. But now, motherboards have plenty of space and for just a little more money up front, you can futureproof your machine and save yourself alot of trouble by getting more than the minimum you need up front..
Ram is cheap for the amount of performance it gives you. Fill it up to extend the life of your computer. 16Gigs is the current recommendation.
The most important things:
- check your motherboard compatibility list so that you don't buy something that doesn't work
- get all your ram at the same time. Motherboards like all your chips to match
- get the highest speed ram your motherboard supports
- get the lowest latency ram you can find.
- get lowest power ram your motherboard supports