Types of Memory and What Do They Mean?


Memory (RAM) comes in many different forms. RAM stands for Random access memory and acts as a quick access port for your computer to store and access data. 

The larger your RAM, the more data your computer has readily available for quick access; the faster the RAM, the less time it takes for your computer to access this memory; and the faster your computer will be able to run it’s operations. 

RAM is used for the brief transferring and exchange of data and is not meant for long term storage of data. A larger disc size means faster exchange of data. While larger disc sizes are generally better, there comes a point where you will have more space on your card than needed for the programs you run. Generally 16GB to 32GB will be ample space for any programs you will run. 


The DDR(Double Data Rate) discs used today evolved from single synchronously accessed memory. Double data disks are not only faster, but also more energy efficient than their predecessors which are now referred to as Single data rate (SDR).

Today you will see numbers succeeding the DDR (DDR2, DDR3, etc) which represent newer and more efficient generations of DDR, with higher numbers being better.


System performance is dependent on a factor of speed and CAS latency. However, between the two, faster speeds are prioritized over lower CAS latency.


The speed of Data Rate exchange is measured in MHz per second. Products in today’s market generally range from around 2400Mhz to 4000Mhz per second. The higher the number means the more interactions and faster speeds.


CAS latency is essentially the quantity of clock cycles between a command and a reaction. The higher the CAS latency means a slower reaction. Lower CAS latencies will mean a faster system. 


Aside from speed and CAS latency, another technique used to improve performance, Extreme Memory Profiles (XMP) is a memory setting that can be enabled to boost the speed of the memory. Unlike overclocking in processors, XMP is a safe way to boost performance without compromising the longevity of your computer. 

All Helium computers have DDR4 disc options starting at 16GB up to 64GB. Our G-skill discs operate at a frequency of 3600 MHz with CAS latency of 16. For an optimal gaming experience and speed, all memory comes with XMP enabled for no extra charge.