Why You Need more RAM for your devices
According to TechTarget, A RAM (random access memory) is the place in a computing device where the operating system (OS ), application programs and data in current use are kept so they can be quickly reached by the device's processor . RAM is much faster to read from and write to than other kinds of storage in a computer, such as a hard disk drive (HDD ), solid-state drive (SSD ) or optical drive. Data remains in RAM as long as the computer is running. When the computer is turned off, RAM loses its data. When the computer is turned on again, the OS and other files are once again loaded into RAM, usually from an HDD or SSD.
First, let's take a moment to clarify what exactly more RAM can (and can't) do for you. The biggest benefit of upgrading your PC's/ Mobile memory is better multi-tasking, especially for those of us using RAM-hogging software like Photoshop, Macromedia, or Firefox , 10 minutes after we've opened it. Having a lot of memory means that you can quickly switch back and forth between the different applications without Windows writing the process memory out to the pagefile. (The pagefile performs much the same purpose as RAM, but the data is stored on your much slower hard drive.)
To put it another way, your RAM generally does not make your Devices faster, it just allows it to do more things at once. If your single application uses 200 MB of RAM, it won't matter if you've got 2 or 8GB of total system memory, but if you've got 10 windows open using 200 MB each, then you are probably going to benefit from an upgrade.
What Applications Actually Use 4GB+ of RAM?
It's true, very few applications are going to use large chunks of your system memory, but there are some applications that will benefit greatly from an upgrade—image editing applications like Photoshop, video/audio editing applications, or virtual machines like Firefox or Macromedia will use as much RAM as you can spare. On my devices with 8GB of RAM, I'm able to run all of the above at the same time, without showing any signs of slowdown when switching from one application to another.
More RAM Will Not Make Single Tasks Faster
Other than the specific applications that hog your RAM, if you think bumping your RAM from 3GB to 8GB is going to increase the speed of a regular application-like a video game—you should think again. The only thing that additional RAM does is allow your computer to do more things at once, not actually make it faster. So if you normally have a few dozen windows open before you launch your video game, you'll see some speed improvement by upgrading, or you could just close a few apps.
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How Do You Know When to Upgrade?
If you are running with 2GB or less RAM in your system, you could probably benefit from an upgrade unless you barely use your PC or run a single application at a time—it should be easy to open up Task Manager and check whether your memory usage is reaching the limit. If you consider yourself a power user, you'll want to consider upgrading your PC to 3 or 4GB of RAM. So what if you already have 3GB+ installed? Should you drop the cash for 6 or even 8GB of RAM?
To really analyze whether your PC is using the memory properly or paging to the disk, the best tool is the Resource Monitor included in Windows 7 or Vista—it gives you a quick view at exactly what resources are being used, and what they are being used for. The key thing to pay attention to is the Hard Faults/sec graph, which tells you how many times an application attempted to read memory that Windows was forced to push into the pagefile because of a lack of memory..
I hope this will helps a little.
CREDIT: http://lifehacker.com/5415355/do-you-really-need-more-than-4gb-of-ram
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