There are so many PC parts to think about when you're building or upgrading your gaming PC, and amid that mountain of specs, few parts are more puzzling than memory (or RAM). At the baseline, it may seem simple, as there's the RAM's capacity to think about, with 8GB to 16GB generally being acceptable for mid- to high-end systems. But, once you start digging deeper, RAM gets astoundingly complex.
Beyond the capacity, you'll have to consider things like whether you want to take advantage of dual- or quad-channel memory, the memory speed you want to run at (yes, RAM has a clock speed much like a CPU), and perhaps the even more complicated CAS latency and memory timings. All of these things will vary between different memory kits, so you...