How To Tell How Many Pins My RAM Has?

Many of us, who are normal humans, know about RAM and its importance for the performance of a laptop or a PC. However, tech geeks are a level extra, and know about the ram’s specifications, what it is made of, and how many pins are needed for its functioning. So this article’s agenda is to upgrade the normal human being’s geek scale and explain what a RAM is, what its types are, and how to tell how many pins your RAM has. Keep reading this article for more technical content, and next time while buying a computer, ask all these questions and make your shopping experience better.

How To Tell How Many Pins My RAM Has

What is a RAM?

RAM is the performing part of a computer that plays a pivotal role in processing. The Random Access Memory is where the computer’s software programs are built into. You can read and write into it, and the capacity of RAM determines your system’s speed. This is the part of the computer which your CPU can access anytime it wants to extract the information.

The RAM has been modeled into different types, sizes, processing speeds, and working capacities. There are multiple variants like the SRAM, DRAM, SDRAM. The DRAM has another variant, called the DDR SDRAM, which is the latest variant being used in high processing computers and the latest generations.

  • The SRAM is the Static Random Access Memory. SRAM and its variant SDRAM is the type of RAM which is working in synchronous mode. That is, the RAM processing will be based on the clock signals. Though this used to be popular among computer engineers, nowadays, SRAM is not used and has become outdated. There are new technology updates that require much less voltage consumption when compared to the SRAM version. Also, SDRAMs are more predictable, and the clock signals take place at just one edge.


  • The latest version of them is the DDR SDRAM, which uses voltage levels compared to the SDRAM versions. Also, they work under a similar clock cycle phenomenon. However, the number of tasks that a DDR SDRAM can perform under one clock cycle is approximately double the performance of an SDRAM. DDRs can perform two write cycles and two read operations in the period of one cycle itself.


  • Because of this faster working, the DDR is abbreviated as the Double Data Rate. Also, this RAM has 184 pins with just one notch in its connector edge, much higher compared to the 168 pins and its two notches provided in the SDRAMs.


  • Since the other versions of RAMs have become redundant with today’s technology, this article will be about the DDRs and their multiple varieties and how to tell how many pins does my RAM has.


DDR and its Types

There is a multitude of DDR variants available in today’s market, like the DDR2, DDR3, and DDR4 SDRAMs. This part of the article will deal entirely with these types and their differences.

DDR2 Variant

The first update after the initial DDR SDRAM model is the DDR2 SDRAM. The important improvisations done in this technology are the increase in the cycle speed and its power consumption. This applies to whichever electronic product is considered. So obviously, the DDR2 model has a faster clock speed of 533MHz when compared to the 200MHz speed of the DDR model. Also, the voltage consumption has considerably reduced from 2.5V in DDR to 1.8V in the DDR2 model. The number of pins that DDR2 has also increased considerably from its ancestor model. DDR2 has 240 pins compared to the 184 pins DDR had. However, there is no provision for backward compatibility.

DDR3 Variant

The DDR3 is similarly the improvised version of the DDR2 model with improvements in the clock speed and voltage consumption. The memory capacities of this version are top-notch, and the reliability is the best. The voltage consumption has reduced considerably from 1.8V in DDR2 to 1.5V in the DDR3 model. Also, the DDR3 variant has 240 pins, which are the same compared to the DDR2 model. The DDR3 RAM runs at a speed of 800MHz, which is so huge; when compared to the previous versions. The case of backward compatibility is also similar to that of the DDR2 version, as there is no provision mentioned for that.    

DDR4 Variant

The latest among the DDR SDRAMs is the DDR4 RAM model. For its speed of 800MHz, DDR3 was considered a beast. However, DDR4 surpasses all and runs at a speed of 1600MHz. Also, the voltage consumption has been considerably reduced to 1.2V. This version provides better signal processing and comparatively at high speed. It also has improved memory functions. The number of pins has increased for the DDR4 model from the 240 in DDR3 to the 288 pin model. Concerning backward compatibility, there is no change for DDR4.

So now the ultimate question is, How to tell how many pins my RAM has?

How to tell how many pins my RAM has?

One of the easiest ways to find out how many pins does your RAM has is to look at the type of RAM which is available in your device and have a look at its specifications. As we have mentioned above, the different RAMs have a different number of pins, and the pin number has increased based on the improvement in technology.

  • In DDR1 and DDR2, the number of pins was 184 and 220. There were 240 pins in DDR3, and with improvisations, it increased to 288 in DDR4. So, based on the type of RAM used, we can tell how many pins are there in the RAM.


  • However, it is easy to find the number of pins if we know the type of RAM used. In some cases, when the type is not known, there is a method to identify it and thus find out the number of pins in them.


  • There are notches present in the pins. So, for DDR1 and DDR2, the notches are etched similarly but with slight variations in the position. In DDR1, the notch position will be near the integrated chip, and for DDR2, the position is slightly farther from it. And to find for DDR3, the notch will not be present near the board. So, based on this, the RAM type; and the number of pins it has can be identified.


  • Also, the number of pins in a RAM chip will affect its length. So if the number of pins is more, then the RAM device is longer, and vice versa. The usage and performance also depend based on the number of pins. The longer pins are used for desktops and personal computers, whereas the shorter length pins are widely used in laptops.


So, this article solves your query, how to tell how many pins my RAM has?





About the author


Add Comment

Click here to post a comment