Types of RAM

Maybe the most widely recognized challenge that PC clients experience is when utilizing a PC includes memory, or something related to the computer memory. Also, the PC experts will let you know that PC clients are regularly hazy on the various sorts of memory in their PC.


Computer Memory Solutions

2 years ago | 6 min read

Maybe the most widely recognized challenge that PC clients experience is when utilizing a PC includes memory, or something related to the computer memory. Also, the PC experts will let you know that PC clients are regularly hazy on the various sorts of memory in their PC. Users regularly trade memory with storage, as well as the other way around. Moreover, we don't need you to show up as a beginner. So, we have sorted that for you and separated the ideas to tell what they are and how they cooperate, and what they mean for your PC's performance. 

Before we move forward, let us clarify who we are. Computer Memory Solutions or the CMS are one of the oldest names in the market. They are 15-year-old sellers of different storage devices and memory solutions such as RAM, SSDs, and HDDs with all ranges and memories. Furthermore, you will get all the authentic products here keeping them within budget. 

Computer RAM vs Computer Memory:

If we say it simply, your PC's primary memory is called RAM. You can consider it a work area the PC uses to finish work. At the point when you double-tap on an application or open a record, or, all things considered, do quite a bit of anything, RAM becomes acclimated to store that information while the PC is dealing with it. Current PCs regularly come furnished with 4, 8, 16, or more gigabytes of RAM pre-introduced. 

Additionally, there is a hard disk drive as well. Here, the information is recorded and can remain endlessly, to be reviewed as vital. If we co-relate both the terminologies, RAM is volatile, the data that is placed there vanishes when the power is cut down or when the PC is reset. Stuff stays there forever until it's eradicated or erased, or until the storage medium fails. 

RAM represents Random Access Memory which is a progression of chips in your PC. At the point when your PC is turned on, it stacks information into RAM. Projects that are as of now running, and open records, are put away in RAM; anything you are utilizing is running in RAM someplace. When the power to the RAM is cut, it fails to remember everything; that is the reason an unsaved archive is lost if the PC secures or there is a power disappointment. At the point when you save an archive, it goes on a hard drive, or one more kind of media stockpiling gadget. Normally, it’s magnetic and doesn’t depend on the electricity to remember what's written on it. Generally, it's much slower than RAM. The PC can get to anything put away in RAM almost in a flash. Things on the hard drive should be found, read, and shipped off RAM before they can be handled. 

Types of RAM:

Basically, RAM primarily can be divided into two categories. 

  • Static RAM (SRAM)
  • Dynamic RAM (DRAM)

Static RAM 

Static RAM is the full abbreviation of SRAM. In this kind of RAM, information is put away utilizing the ability of six transistor memory cells. We can say that it is a cache memory of your central processing unit. As established earlier, it is made up of four to six transistors and keeps data in the memory as long as power is supplied to the system. While, on the other hand, DRAM, needs to be refreshed periodically. Moreover, SRAM is faster but at the cost of high price. It is expensive and that’s why DRAM is more prevalent memory in computer systems.

Dynamic RAM 

DRAM stands for Dynamic Random Access Memory which permits you to store each piece of information in a different capacitor inside a particular integrated circuit. Dynamic RAM is a standard PC memory of numerous modern-day PCs. It is an unpredictable memory that should be revived with voltage routinely. Or else it loses the data it has on it. Widely used computer’s main memory is that each memory cell is made up of a transistor and a capacitor within an integrated circuit, and a data bit is stored in the capacitor. As we know that the transistors always leak a small amount, hence the capacitors will slowly discharge. This will ultimately cause the information to be stored in the drain. So, you need to refresh your DRAM every few milliseconds if you want to retain your data. 

Furthermore, we can divide the DRAM into 3 branches. 

  • Synchronous DRAM (SDRAM):

This type of RAM “synchronizes” the memory speed with the CPU clock speed. This way, the memory controller will get to know the exact clock cycle when the requested data will be ready. Hence, this type allows the central processing unit to be able to perform more instructions at a certain time. If we take a Typical SDRAM, it will transfer data at speeds up to 133 MHz.

  • Rambus DRAM (RDRAM):

You may think that it has an unusual name, it is because it has taken its name after the company that made it, Rambus. In the early 2000s, it was very popular and was used for video game devices and graphics cards. It has transfer speeds up to 1 GHz.

  • Double Data Rate SDRAM (DDR SDRAM):

Another type of synchronous memory that almost doubles the bandwidth of a single data rate (SDR). It employs a method called “double pumping” and SDRAM runs at the same clock frequency. Double pumping allows the transfer of data on both the rising and falling edges of the clock signal that too without any increase in clock frequency.

It has 4 types with different transfer rates. 

  • DDR Type 1:

Type 1 has the transfer rate of DDR between 266~400 MT/s. DDR266 and DDR400 are of this type that you can find in the market. 

  • DDR Type 2:

It can operate the external data bus twice as fast as type 1 and this is mainly achieved by improved bus signal. The transfer rate of this type can reach 533~800 MT/s with the improved I/O bus signal. You can find DDR2 533 and DDR2 800 memory types in the market.

  • DDR Type 3:

This type is known as it reduces 40% power consumption compared to current DDR2 modules. Hence, this allows for lower operating currents and voltages. It has a transfer rate of 800~1600 MT/s. 

DDR3's prefetch buffer width is 8 bit. Meanwhile, DDR2's is 4 bit, and DDR's is 2 bit. What makes it even more special is the added two functions like ASR (Automatic Self-Refresh) and SRT (self-refresh Temperature). These functions help memory in controlling the refresh rate according to the temperature variation.

  • DDR Type 4:

This one provides the lower operating voltage (1.2V) and higher transfer rate which is around 2133~3200 MT/s. Furthermore, it has four new Bank Groups technology and each bank group has the feature of single handed operation. Also, type 4 can process the data within a clock cycle making it more efficient. The added functions like DBI (Data Bus Inversion), CRC (Cyclic Redundancy Check), and CA parity can help in enhancing DDR4 memory's signal integrity, and improve the stability of data transmission/access.

RAM Sizes and Speeds:

RAM Type

Pins (DIMM)


Common Type and Speed




PC3200 = 400MHz/3200Mbps




DDR2-800 (PC2-6400) = 800MHz/6400Mbps




DDR3-1333 (PC3-10600) = 1333MHz/10,600Mbps




DDR4-2400 (PC4-19200)= 2400MHz/19200Mbps



DDR3 or DDR4


Computer memories and the RAM have so much to describe and so much to tell. Summarizing it was difficult, but this is enough for a person who is now considering whether to know about their PC memory or upgrading the PC RAM. Our computer market has a lot to offer with so many new things coming every day. But, upgrading the RAM and computer memory is an easy way to upgrade the computer and boost its performance and efficiency. And, CMS is here exactly for that purpose. 

Computer Memory Solutions help you upgrade the existing RAM of your computer, as they have a wide variety of everything you need. Moreover, CMS also provides you with a warranty of up to 3 years for Desktop and Laptop memory solutions making your purchase risk-free. The lifetime warranty of server memory and 3-year warranty of the SSD drives are rare things to find as well. 

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Types of RAM


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Computer Memory Solutions

Founded in 2004, Computer Memory Solutions is committed to providing computer memory products and SSD storage at exceptionally low prices for PCs, Macs, Laptops, printers and more. From 16MB to over 512 GB, we have it in stock and ready to ship. We offer a wide variety of popular and hard to find older SIMMs, DIMMs and Rambus modules as well as the latest DDR, DDR2, DDR3, DDR4 & DDR5 modules.







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