RAM is the short term memory of your computer. When someone asks, what is computer RAM, they generally get the answer that it stands for Random Access Memory. But what is that really? It’s the same type of memory you use when you are carrying a digit while multiplying in your head. Or what lets you remember a phone number before writing it down.
It’s used for short term purposes, to ‘hold information’ in a way that is fast, but not long term. Sometimes a good way to understand something is to oppose it to something else. RAM memory is different than ‘hard drive memory’ in that our hard drive is like our long term memories. They can be hard to draw up and hard to remember. RAM is short term, it’s quick to remember but not meant for long term.
What does RAM Memory Do?
When you watch a streaming video, RAM is keeping the latest bits of video ready for you to see. When your browsing Facebook on your phone and you get a message that a new email came in, your RAM is ‘holding’ the information of Facebook while you look at your message.
The function of RAM is to load all the instructions that your computer will execute. These instructions come directly from the operating system, connected devises, hard drives and all the equipment connected to the machine.
The reason for the term ‘Random’ in the name is that it allows read and write access without requiring a sequential ordering of data.
How Important is RAM Memory?Without RAM computer instructions and information would all have to come from the hard drive, which is much slower to access than random memory. So really it is one of the most critical components in your computer and can be the source of a fast, or conversely slow computer.
Does my Computer Have RAM?
Yes, virtually all modern computers have RAM. The JEDEC is the organization in charge of providing the standards related to computer RAM. There’s ‘regular RAM’ and there’s ‘Video RAM’ sometimes known as VRAM or GRAM (graphics RAM). Higher end computers many times carry both regular and graphic or video RAM. Within each type there’s subgroups, a few examples of this;
- ‘Regular RAM’ – This includes DIMM and SODIMM Variants
- DDR3 RAM
- DDR4 RAM
- DDR5 RAM
- Video or Graphics RAM
How much RAM Do I have and How much RAM do I need?There’s two ways to know how much RAM you have. One way is to open your computer and physically look at it. Most of the time, though not always,
Since that’s inconvenient, most people will want to see it displayed.
How to see my RAM on Windows 10On the start menu type “Control Panel”. Click your control panel. Inside the control panel, click the area called “System and Security”. Here under the ‘System’ header, you’ll see a link called ‘View amount of RAM and processor speed. Click this. Here’ the computer’s RAM can be seen, generally measured in GB which stands for Gigabytes.
How to see my RAM on Windows 8Click the Start menu or start screen and type in the 3 letters ram. Windows should return an option called ‘View RAM Info”. Click this and you will find the screen that shows the ‘installed RAM’ measured in GB, which stands for Gigabytes.
How to see my RAM on MacOn the Apple menu on MacOS X click the About this Mac option. Here you will see how much RAM is installed on an Apple Mac computer. The About This Mac is the first option. In the About This Mac window that appears, you will see how much RAM your computer has installed as measured in GB or Gigabytes..
Do I need more Computer RAM? Is my Computer RAM Enough?
More important than what is computer ram is how much RAM your computer needs depends on what you use your computer for and how much you are willing to accept a slow performing computer. Here’s a breakdown on some common RAM amounts and what they are good for:
- 1GB or Less
This is a very small amount of RAM. It’s really only good for Chrome books or computers running older commercial operating systems (such as Windows 98 or Windows XP) or non-commercial operating systems like Linux. Such a computer can be used for browsing the internet and answering email, but not much else. It’ll be slow. If it has an older commercial operating system, it’s not secure.
- 2GB to 3GB
This is the smallest amount of ram you can have and still run a modern Windows operating system. This will be enough to browse the web, send email, see video and pictures, and use basic word processing software.
- 4GB to 6GB
At this level, computers become much more useful. You can not only browse the internet, send email and use word processors, but you can also edit pictures, use advanced spreadsheets and even do very basic programming and/or graphic design. However, due to the small amount of RAM, advanced operations will be very slow and cumbersome.
- 8GB to 12GB
This is the minimum level for most professionals. Computers will be able to do most work. They are faster than with with the last step.
This is the most common amount used among high level professionals. At the level, most computer operations will happen virtually instantly based on the RAM. Once we reach 16GB of RAM, the bottle neck for computer performance will be at some other level of component (generally the CPU)
- 32GB to 64GB
This is the most RAM that single processor computers have. This is for video editing, 3d rendering, high level financial trading, architecture and other very high level functions. 99.9% of people won’t need anything this powerful.
Not All RAM is Created EqualThe amount of RAM could be though of as ‘size’. Bigger generally is better, but not size isn’t everything. In the case of RAM, it indicates the carrying load. But not the speed.
One computer using 8GB of DDR4 Ram can be almost twice as fast as another using a different 8GB of DDR4 RAM. How could this be? Because RAM is more than just the load. Also relevant is the clock rate, cycle time, latency and frequency. These combine to create two very important numbers to keep in mind when shopping for RAM: Transfer rate, measured in MT/s and Bandwidth, measured in MB/s. In general, you want the MT/s and MB/s to be as high as possible.