Even if you have blazing fast clock speeds, high latency will put a damper on your RAM party. CL is the number of clock cycles it takes for the RAM to deliver a piece of data requested by the CPU.
The clock speed number, represented in megahertz, is the number of cycles per second the RAM can perform.įinally, Column Access Strobe latency, also known as CL, must be taken into consideration. DDR4 RAM can transfer data at a rate between 2133MT/s and 4266MT/s, while DDR3 RAM can only hit transfer data rates between 800MT/s and 2133MT/s.Īnother number you'll see is the clock speed, which is how fast the RAM can read and write data. A higher transfer rate means you have more bandwidth and will thus be able to transfer more data at once. When studying data transfer rates of RAM, you'll see it measured in either million transfers per second (MT/s) or gigatransfers (billion) per second (GT/s). The difference? DDR3L RAM can function at both 1.5V and 1.35V, while DDR3 RAM is stuck at 1.5V. This RAM has the same pins and works with any CPU and motherboard that works with DDR3 RAM. You might also hear mention of DDR3L RAM. If you need a hand, PC Part Picker has a wonderful tool that shows you what works together and what doesn't.
Take time to research and make sure all parts of your PC are compatible. Also, take note that not all RAM works with all processors, even if it fits into the motherboard. The different connectors ensure no one accidentally installs the wrong type of memory. Why are they different? A motherboard and CPU that work with DDR3 RAM don't work with DDR4 RAM and vice versa.
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