RAM PCB: The Ultimate FAQ Guide

Probably, you are wondering what RAM PCB is all about.

Well, this guide explores everything you need to know about this memory PCB.

So, keep reading to learn more.

What Is A RAM PCB?

A RAM PCB is a computer memory circuit that allows reading and modification of data and machine code in any sequence.

You employ a RAM PCB in the storage of working data and machine code.

With a RAM PCB, you can read or write data in roughly similar times regardless of their actual location. Data line connections to the designated storage are thanks to the RAM PCB’s multiplexing and demultiplexing hardware.



A RAM PCB constitutes integrated circuit chips containing metal-oxide-semiconductor (MOS) memory cells.

Memory in a RAM PCB is volatile meaning you lose the recorded information upon loss of power.

Where Do You Employ RAM PCB?

The purpose of a RAM PCB is to offer a location for storage and retrieval of data fast. This is advantageous since it allows easy data access by running applications.

You find use of the RAM PCB in the following areas:

  • In digital cameras, printers and routers.
  • As cache for the CPU.
  • Memory buffer for the hard disk.
  • In video cards with digital-to-analog converters (DACs).
  • Networking hardware and video game consoles.
  • System Memory for computers and video graphics.

Why Is A RAM PCB Important?

A RAM PCB is significant since it is a vital aspect in deciding how well your computer performs.

Having inadequate RAM PCB affects your programs causing them to lag or stop working altogether.

RAM PCB transfers and stores data in conjunction with the hard drive and other components.

Having a RAM PCB with large storage is beneficial for tasks demanding large storage and processing ability.

What Types Of RAM PCB Are Available?

You find RAM PCBs in different sizes, speeds and designs. Therefore, your RAM PCB selection influences your intended function.

There are two major RAM PCB types as follows:

Dynamic RAM PCB

The working of a dynamic RAM PCB is dependent on a regular power ‘refresh’.

You identify capacitors in a dynamic RAM PCB necessary for data storage through progressive energy release without which data is lost.

You find dynamic RAM PCBs store data in a cell constituting a transistor and a capacitor.

The capacitor has a high (1) or low charge (0), while the transistor works as a switch.

Dynamic RAM

Dynamic RAM

The dynamic RAM PCB is the most common type as it is less expensive to build with higher memory capacities.

However, this RAM PCB type consumes more power and has slow speeds of access.

Static RAM PCB

A static RAM PCB employs steady power supply when functioning unlike dynamic RAM type that requires refreshing.

Consequently, you need no changes in maintaining data integrity.

However, static RAM PCB stores volatile memory which means you lose data upon experiencing power interruption.

static RAM PCB

Static RAM PCB

Static RAM differs from dynamic RAM as it stores information using four to six transistors.

Static RAM outperforms dynamic RAM in terms of performance and speed albeit at a higher cost.

How Does The Dynamic RAM PCB Compare To Static RAM PCB?

You find volatile memory storage in both dynamic and static RAM PCBs. However, there are several distinctions between a dynamic and a static RAM PCB.

  • A dynamic RAM PCB employs a solitary transistor in storing a single memory block. However, a static RAM PCB employs six transistors for the same purpose.
  • A sole transistor and capacitor make up the cell of a dynamic RAM PCB.
    On the other hand, a static RAM PCB constitutes between four and six transistors minus capacitors.
  • Access time in dynamic RAM is longer since it is off-chip. For static RAM PCBs, access time is shorter since it is on-chip.
  • Dynamic RAM PCBs find common use as main memory in computers whereas static RAM PCBs find use as cache memory.
  • So long as you have constant power supply, a static RAM PCB can retain its memory data. However, for it to hold onto its memory data, a dynamic RAM PCB needs regular refreshing.
  • Static RAM PCBs cost much higher while consuming less power than dynamic RAM PCBs which suffer charge leakage.
  • You can store more data in dynamic RAM PCB due to higher density compared to the static RAM PCB.

What Components Do You Find In A RAM PCB?

Typically, you find RAM PCBs contain memory cells which consists of transistors and capacitors. However, depending on the type of RAM PCB, the cells have different architecture.

The dynamic RAM PCB memory cell consists of a single transistor and capacitor.

A dynamic PCB can accommodate thousands of such cells configured in columns and rows, with each storing a single memory block.



With static RAM PCBs, the memory cell consists of only transistors without a capacitor hence the need of constant power.

The transistors can be four or six with different configurations.

What Should You Consider When Replacing Your RAM PCB?

When conducting a RAM PCB upgrade, the process varies according to the device, and memory type and amount. You can update your RAM PCB by following these steps:

  • Examine your gadget to see if the RAM PCB is replaceable.
    Replacing is possible where the RAM PCB is in an open case or socket allowing you easy access.
  • Verify the RAM PCB limits with regard to operating system and motherboard.
    You may examine the motherboard by counting the RAM slots and look online for OS support features.
  • Figure out your desired RAM PCB’s capacity. You find this depends on your intended use and maximum capacity your device can support.
  • You can upgrade your RAM PCB to boost performance. This is after evaluating your device and determining the memory quantity you require.

How Does A Dynamic RAM PCB Work?

A memory cell in a dynamic RAM PCB constitutes a transistor and capacitor pairing.

The transistor operates as a switch charging and discharging the capacitor in which you store data in charge form.

Application of a voltage to the address line causes the transistor to acts as a closed switch, allowing current passage.

When you apply no voltage, you consider the transistor as an open switch.

You organize the memory cells as columns and rows; the former as bit-lines and the latter as word-lines. The memory address defines the point of intersection of the bit-line and word-line.

The working of a dynamic RAM PCB revolves around charge release to a specific column with an active transistor bit.

You read data in 1s and 0s described respectively as a charge level exceeding 50% and less than 50%.

Charge outflow results from reading a bit-line which results in data loss if unchecked.  A counter is pivotal in tracking refresh orders based on row access.

What Are The Specific Types Of Dynamic RAM PCB?

You find different types of dynamic RAM PCB as follows:


Modifies the clock speed allowing the memory controller to identify the availability of requested data. With this type, you can store and retrieve information more quickly.

synchronous Dynamic RAM PCB

Synchronous dynamic RAM PCB

Synchronous operation offers the advantage of allowing a CPU to execute overlapping instructions simultaneously. In this case, you can read data before a preceding write process terminates.

Double Data Rate

With this type, you have double the RAM PCB capacity allowing data transfer over both the rising and falling clock signal portions.

Double data rate dynamic RAM PCB

Double data rate dynamic RAM PCB

Consequently, you can handle two read and two write commands for each clock cycle.

What Cell Types Are Available In Static RAM PCBs?

Static RAM PCB cells are available in three main types with the cross-coupled inverters load type causing the disparity.

4T Cell

Comprises a double pairing of n-type MOS transistors and a two poly load resistors.

A pair of the n-type transistor gates connect to the word line, forming a column link as pass transistors. You also have cross-coupled inverters consisting of poly-load resistors that control the remaining n-type MOS transistors.

The 6T Cell

Consists of six transistors: four n-type MOS transistors and two p-type MOS transistors.

The 6T cell uses p-type MOS transistors for load instead of poly-load resistors with bit line connection by NMOS transistor pairing.

TFT (Thin Film Transistor) Cell

Here, you have a double pairing of NMOS transistors alongside a load pair known as thin film transistors of p-type construction.

This cell design aims to overcome the 4T cell’s high electrical resistance constraint.

Why Should You Employ A Static RAM PCB?

Using a static RAM PCB instead of a dynamic RAM PCB affords you the following advantages:

  • Unlike a dynamic RAM PCB, a static RAM PCB does not need refreshing to maintain memory data.
  • The static RAM PCB offers enhanced performance when comparing speed with the dynamic RAM PCB.
  • The static RAM PCB finds use in the development of caches with speed sensitive bias.
  • For a static RAM PCB to function, you require lower power requirements than a dynamic RAM PCB.
  • You can carry out a many write operations in a static RAM PCB before wear.
  • Static Ram PCBs have a large memory density.

What RAM PCB Sizes Are Available In The Market?

The RAM PCB size suitable for your device is contingent on the device type and purpose. You find the following popular RAM PCB sizes available:

4 GB

A 4 GB RAM PCB is the minimum capacity for several applications including gaming.

With such a RAM PCB, you can simultaneously support several windows such as browsers and emails.

8 GB

Many current generation devices support 8 GB RAM PCBs making them ideal for slightly advanced applications.

16 GB

A 16 GB RAM PCB is sufficient for heavy applications with demand for excellent visuals and fast processing rates.

Having a RAM PCB with large capacity helps you avert the slowdown that simultaneous running of multiple high-power apps might generate.

32 GB

You extract maximum performance levels from a 32 GB RAM PCB allowing you a seamless experience for high graphic applications.

What Is The Graphics Double Data Rate Synchronous Dynamic RAM PCB?

You employ the GDDR synchronous dynamic RAM PCB for rendering video graphics, with a specialized GPU.

This RAM PCB type allows you to achieve surreal high-definition landscapes, necessitating high system specifications.

The design architecture of GDDR RAM PCB corresponds to the DDR RAM PCB’s with the addition of several performance boosting features.

Some notable features include:

  • Sending and receipt of data in a GDDR RAM PCB can happen on a single cycle of the internal clock.
  • The bandwidth support of GDDR RAM PCBs is much higher thanks to the larger memory bus.
  • The performance of GDDR is much better with lower power consumption and heat production.
  • You note that the GDDR RAM PCB transmits 16 data buts to the DDR’s 9 bits.

What Is A Resistive RAM PCB?

A resistive RAM PCB constitutes non-volatile memory circuit with the capability to change its dielectric material’s resistance.

You find that when you supply different voltages to a memristor in a ReRAM PCB, the resistance changes.

You find oxygen vacancies, created in ReRAM PCBs which comprise physical flaws in an oxide layer.

Just as with electrons and holes in a semiconductor, these vacancies epitomize a binary system’s two values.

resistive RAM PCB

Resistive RAM PCB

The switching speed in ReRAM PCBs is faster in comparison with other similar options like NAND flash. An increase in storage density and less power consumption is also viable.

What Is A Memory Cell In RAM PCBs?

The memory cell is central to the RAM PCB’s memory storage function.

It comprises an electronic circuit capable of storing a single bit of binary data.

You find a high voltage indicates logic 1 while a low voltage indicates logic 0 until you undertake an alternative operation.

For instance, a synchronous RAM PCB’s memory cell includes a flip-flop circuit whose infrastructure consists FETs.

Contrarily, a dynamic RAM PCB’s memory cell comprises a chargeable and dischargeable capacitor alongside a transistor requiring constant power refreshing.

How Do You Read Data From A Dynamic RAM?

Storage of data in a dynamic RAM PCB is in a memory cell. You find the following operations necessary to execute a read command:

Disconnection of the sense amplifiers pre-charges the bit-lines to a median voltage value.

The length of the bit lines ensures enough capacitance to maintain pre-charge voltage for a short time.

Connection of a storage cell capacitor to the bit-line is by enabling the word-line to high.

Thus, the transistor turns on providing charge to the bit-line, for logic value 1.

You recharge the storage cells throughout the “read” process by the sense amplifiers output current flowing into the bit-lines.

What Are The Features Of A Dynamic RAM PCB?

The dynamic RAM PCB has the following notable features:

  • This RAM PCB type is small and less expensive than the synchronous RAM PCB.
  • When you compare a dynamic RAM PCB to a synchronous RAM PCB, the former offers you slower read/write operations.
  • You can only store data in dynamic RAM PCBs for a limited period.
  • You find dynamic RAM PCBs commonly utilized as the prime memory storage location in computers.
  • You have to refresh the dynamic RAM PCB continuously to prevent loss of data in the storage cells.

What Are Address Strobes In Dynamic RAM PCB?

The configuration of memory cells in which you store bits of data is in columns and rows.

Each memory cell stores a single data bit and you can therefore locate the cell by providing a row and column address.

When retrieving data, a computer processor employs address strobes in communicating with the dynamic RAM PCB.

These address strobes are the RAS and CAS identifying the requisite row and column data location.

  • Row Address Strobe (RAS): The processor sends the RAS to trigger the exact location of a row.
  • Column Address Strobe (CAS): The processor sends the CAS to trigger the exact location of a column.

What Should You Consider When Purchasing A RAM PCB?

In purchasing a RAM PCB, you need to make the following considerations:


Consider your desired RAM PCB capacity based on your requirements.

For smooth performance, heavy computer programs such as games and video editing demand large RAM PCB capacities.


Your RAM PCB’s frequency rating should match your device’s for a similar level of operation.

Otherwise, buying a RAM PCB whose frequency lags behind the device’s mainboard results in failure.


The interface of a RAM PCB influences compatibility. For instance, a third generation RAM PCB is not backward compatible.


Timing is subject to a RAM PCB’s setting of latency which is the clock cycle count in a complete read operation.

Therefore, where you have a low latency, it signifies better performance.

What Are Some Of The Packaging Options Available For RAM PCBs?

You find the following packages useful for a RAM PCB:


You surface mount the Ball Grid Array package which has solder balls providing electrical connection at the base rather than pins.

You therefore have an increased surface area for electrical connection in this case.


Both sides of a Dual Inline Memory Module have connectors with different pin counts for the synchronous and DDR RAM PCB.

For instance, a synchronous dynamic RAM PCB has DIMMs with 168 pins while the DDR has DIMMs with 184 pins.

You note that the extra pins and different keying notch positions exist to prevent their accidentally swapping.

Dual Flat No-Leads

The DFN package is a surface mount type with a square package but without leads.

Small Outline Integrated Circuit (SOIC)

Another surface mounted package, the SOIC takes up less space than a DIP package of similar size.


The Single Inline Memory Module accommodates multiple RAM PCBs using card edge connection for motherboard socketing.

You can find single inline memory modules with thirty or seventy two pins.


The Thin Small Outline Package has a low profile with the leads tightly spaced. You find their use arises from having a high pin count and low noise production.

What Tests Can You Subject The RAM PCB Through?

There are numerous methods for testing a RAM PCB with each test designed to determine the dependability of its features. These tests include:

Address Line Integrity Test

In this test, you write a random value to a memory region and then read it back for verification.

You might choose a memory region and then write a distinct data set to it before reading to double-check.

Inconsistency in the retrieved data indicates a fault with the RAM PCB’s address lines.

Data Bus Integrity Test

In this test, you aim to establish proper linkage of the lines of data on the data bus.

In testing the data bus integrity, you input a 0 to a specific memory region before reading it as the same value.

You carry out the same procedure with a value of 1 in attempts to establish a disconnection.

Walk-Through Test

In a walk-through test, you examine the binary values of 1 and 0.

You may find wire disconnection is not an issue instead the existence of interconnected wires and/or to the ground and supply line.

You carry out this test once to determine the veracity of a single data bit in a line.

Consequently, you conduct an exhaustive integrity test given an 8-bit data bus, for all the binary bit combinations.

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