Guide To Build Your PC: How Does Ram Work And How To Select It?

One of the elements that most generates conflict among users who decide to assemble a computer is RAM, as it is an element that has a huge number of variants both in brands to buy, as well as in capacity, speed and latencies in which they can be used. find . These are concepts that most ignore and in this guide we are going to explain how this kind of memory works broadly, what factors you should take into account when buying it and that your system does not have any problems due to compatibility issues.

What is a RAM memory?

RAM is a type of memory dedicated to being the intermediary between the processor and the storage found in the computer. Its main function is to temporarily store the most common instructions and data of the programs that run in the operating system. This type of memory can be found in almost any electronic device, from smartphones to desktop computers and its name comes from its acronym in English: Random Access Memory or Random Access Memory.

This type of memory has certain characteristics that differentiate it from other elements of the computer. The main one is that it is an incredibly fast memory and non-linear work sequences. True, it is not as fast as the processor, but it is fast enough to bridge the files and instructions found on a hard drive or solid state drive, manage them, and then deliver them to the CPU in a matter of nanoseconds.

As in the other guides, we are going to talk with analogies. In this case, RAM memory would be the system of muscles in a body: the more memory, the more speed and less latency , so the system will perform better in the different environments generated by the programs used.

How does a RAM work?

The way this component works is quite similar to that of the processor, this being the one in charge of managing the operation of the RAM with a controller inside the CPU through incoming and outgoing electrical signals. Both manage data from storage and other peripherals to later be processed and released to a graphical environment on the PC monitor.

The signals that the RAM receives are of three types: addressing, data and control signals, which are received through the different buses (or data channels that are integrated into the motherboard). For memory operation, three buses are needed, named after the signals that are received.

The first is the address BUS, it is dedicated to giving specific instructions, locating the data and positioning it in the different memory segments available on the physical stick. In the case of modern memory, DDR4, a maximum of 17 bits is used to establish a maximum capacity limit of 32GB maximum per module installed on the motherboard.

The second BUS is the control BUS, which is dedicated to reading and writing the data and addresses that are sent between the storage and the processor.

The third is the data BUS; This system of connections is where the information used by different programs and memory controllers is stored. This bus also tries to match the bandwidth of the processor with that of the RAM in order to execute faster the tasks indicated in the software.

What Is The Difference Between 2.4ghz And 5ghz Wi-Fi?

Modern routers, or modems, have the dual band system to connect to the Internet via WiFi. In these devices, whether they are those provided by the company in which you hired the internet service or those sold by external parties, the signal is distributed in the following bands: 2.4GHz and 5GHz, which you have surely seen these legends at the end of the signal name of your router. But what is each band? What are they for? Which one is the best? In this guide we will explain everything to you.

What is a band and dual band system?

In order not to generate confusion, it is necessary to say that these types of signals are similar to those of radio or television ; the antennas transmit the data in waves modulated by the router and go to the receiver. Waves are measured in Hertz (Hz) and it is the number of waves that are transmitted in one second: for example, for the 2.4GHz band it is 2400 million hertz in one second and for the 5GHz band it is 5000 million hertz per second .

Coverage

Starting with the 2.4Ghz frequency band, it is divided into 13 22 Mhz channels in which the data from the WiFi connection circulates. Its channels are very close to each other, which can cause interference, in addition to that at present the number of channels is small to satisfy the demand for connections, so if you have many devices connected to the same router, the connection and signal strength will be diminished. One of the few advantages is that it has a wider network coverage than the 5GHz band signal.

On the other hand, the 5GHz band is much more powerful than the one mentioned above: it has 21 channels at 20 MHz and has very little interference one on the other, which is why it is more stable. In addition, the number of extra channels makes data transfer faster and connection saturation more difficult. However, it has the disadvantage that the coverage of this type of connection is less than 2.4GHz.

So, those routers that have both bands are considered as dual band systems. To be more specific, these are those that have the IEE 802.11a / n / ac / x connection protocol. Mono band systems are old and only have the 2.4GHz frequency, and they are not recommended for devices with current wireless connectivity.

Connection speeds

The 2.4 GHz band has a maximum speed of 150 Mbps, however, due to the instability of the network and the distance that the devices can have, the speed can be between 50 and 70 Mbps. On the other hand, the 5GHz band can maintain speeds of up to 1Gbps and the most common speeds are between 200 and 600 Mbps. Again, the 5GHz band has a clear advantage.