RAM Characteristics. ... The stated clock speed is actually double the real figure, so a stick of RAM labeled DDR3-1333 PC3200 offers a clock speed of 666 MHz and a transfer rate of 3,200 MB/s.

RAM, or memory, is one of the most important components of your PC, but what is RAM? ... You’ll see these marketed as DDR4-2133 or similar, sometimes with the confusing “PC” label.

There are a lot of RAM kits on the market, but only a select few made the cut in our roundup of the best RAM kits. Here are the top options in 2025.