Home » buy antivirus software online » Reasons Why Anti-Virus Uses So Much Ram-And Why It Is Good

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Many blogs and articles about computers provide smart advice on how to speed up the computer by lowering the load on your hardware. Though having some space on your hard drive is desirable, this does not apply to the RAM (Random Access Memory) of your computer.

RAM is the temporary storage component of your computer. It holds all the data you use currently, from the movement of your mouse to the website you are browsing.

What is done by RAM?

RAM stores the data, which helps your computer conduct vital tasks such as editing documents, browsing websites, and loading apps. It is your computer’s short-term, super-fast memory.

RAM helps you open files and apps in a fast manner since your computer can easily access the data in its short-term memory. Your computer can work fast by ensuring access to information that you use regularly.

In the role of short-term memory, RAM is fashioned to work with small bits of data at a time. For instance, when you click on a link directing you to a website, a series of transistors and capacitors in the circuit board of the RAM turn off or on, allowing your computer to translate the link to the webpage.

This is in contrast to data storage in a hard disk (SSD or HDD), which is the long-term memory of the computer. An HDD (hard disk with spinning disks) typically permits transfer rates of 80 to 60 MB’s per second. An SSD (Solid State disk) that uses memory chips offers speeds of nearly 200 to 400 MB’s per second. However, your RAM enables transfer rates of 10 to 20 GB per second. This is 100 times faster than hard disks.

How do windows use RAM?

When the Windows operating system of the computer starts up, it does reading of all the programs that are part of the hard disk and places them into RAM. This is the place where the CPU can access these programs easily and quickly. All the working data created by the programs, besides other programs, will be placed inside the RAM.

A typical RAM nowadays is between 2 and 6 GB. But if Windows needs more RAM, developers at Microsoft have come up with a concept called Page Files. In this, programs and data in RAM which are not used frequently get stored in a virtual RAM file on the hard disk. This frees up some space on the RAM. But data needed from virtual RAM must be read from a slow hard disk before re-use.

Importance of RAM

With regard to RAM, you can access data in any order- it is not sequential but random access. It is linked directly to the motherboard of your PC, permitting the fastest speed of operations and access. Your computer performs better with the more RAM you have.

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RAM can help in processing data at lightning speed. Random access implies that you can get into any spot on RAM like any other. RAM is an integral part of the processor, which enables the latter to function instantaneously. RAM is used basically to do anything on the computer.

Why antivirus needs more RAM

One can buy antivirus software online and may find that it needs more space on RAM. The main aim of antivirus is to detect and protect against malware. For this, we require search/recognition patterns for comparing files with our database of identified threats. Such patterns are not actually too big, but there are millions of threats out there, and so one needs more patterns.

For instance, an antivirus may have 7 million patterns to compare with, and loading them to RAM may need over 200 MB’s. This may seem huge, but it only works out to be a short sequence of 28 bytes on average to confirm the goodness or badness of a file. Thus, a malware scanner checks 7 million patterns against 300,000 files on your hard disk, and that too within seconds.

This is done inside the RAM. The challenge with the usage of RAM is an industry-wide issue. All pattern-based anti-malware or antivirus typically needs a substantial quantum of RAM for effective protection of the computer.

Hiding usage of RAM

High use of memory is a bad thing. But if you can’t avoid it, the best thing to do is to hide it. There are 2 methods to make a big program seem like a small one:

  • Make use of page files

As pointed out earlier, Windows puts less frequently used parts of programs into your slow hard disk. This process can be forced by programs that ask Windows to swap them to Page files at regular intervals. After this, the Task Manager of Windows displays highly reduced usage of memory. But the catch is regular 1 to 3 second thinking periods while accessing the program. This is the time required for reading the data again from the hard disk. 

  • Use of system drivers

The Windows Task Manager displays only active services and programs but does not include system drivers. Drivers are basic modules that are loaded directly by the OS (Operating System) for some particular core functionality.

Certain antivirus vendors load several hundred megabytes of data in their drivers for creating an illusion of low usage of memory. These can be spotted by summing up usage of memory of all active programs and comparing them with the quantum of total RAM used. If you detect a big difference, something is possibly hiding the usage of memory from you.

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Memory usage and doubling of threats

The pertinent question is that with the doubling of malware threats every year, why can’t memory usage multiply at the same rate?

One of the best things about malware is that several samples emerging in the real world are similar to each other. There are restricted numbers of families of malware, and mostly, samples differ only by a few bits of data. This implies that you can detect huge numbers of threats with smarter and fewer patterns. Using this technique, the number of patterns required for detection doesn’t grow as quickly as the complete number of threats out there in the world. Take this into account during online antivirus purchases for PC.

In sum, it is good that you open the Task Manager often and check how much RAM you use effectively on a busy day with your computer. In case you are not anywhere nearing the physical maximum, you should disable the feature of ‘memory usage optimization’ in antivirus software to gain the best outcomes.


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