RAM buying considerations
- There are different types of RAM. Most PCs use DDR3 memory, but older system may require DDR2 or even DDR. A small segment of high-end PCs now use DDR4 memory, and in another few years the industry will likely standardize on it. But for now, DDR3 is king.
- Speed of the RAM and the capacity of the memory kit. Out of all the memory bandwidth testing done over the past decade, the only thing these tests have consistently shown is that there's very little benefit to purchasing the fastest RAM possible. Most people should look past the flashy 2666MHz and 2400MHz kits and focus on the price/performance sweet spot: DDR3 clocked at 1600MHz or 1866MHz.
- Brand. The biggest difference between memory brands is the design of the heat sinks on the RAM modules. Pick the memory that has the best compromise between an appearance you like and a price you can stomach. You'll find ongoing debates about the reliability of different brands, but on the balance, all big-name RAM manufacturers provide very solid products.
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How to install RAM in your PC
With the buying considerations out of the way and 8GB of DDR3 1866MHz memory freshly delivered to your door step, it’s time to install your new RAM. It's a quick and rather painless task—assuming you’ve done all your homework.
- Shut down your computer and unplug all of the cables connected to it. Then remove the side of the computer case so you can access the motherboard.
- The RAM slots are adjacent to the CPU socket. Look for the big heat sink at the top of the motherboard, and you'll see either two or four memory slots next to it.
- Remove the old kit. Start by toggling the plastic retention clips at either end of the memory slots so you can pull out the old RAM.
- While you're there, remove any dust from the memory slots, either by blasting the area with compressed air or by vacuuming gently.
- Put in the new RAM kit. Make sure the memory module is correctly oriented: The notch in the bottom edge of the RAM must match up with the rise in the memory slot. If you're not filling all the available RAM channels, read your motherboard's manual to see which specific slots you should fill first. Placing RAM in the incorrect slots could result in some performance degradation.
- Toggle the plastic retention levers to lock your new memory modules in place.
- Close up your computer case, plug everything back in, and turn on your computer. It may take a couple of restarts for your motherboard to recognize and adjust to the new memory you’ve installed, so don’t panic if your computer is acting funny at first. Let it run for a few minutes, then restart it and everything will be back to normal.
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