Computer architecture – the structure of the computing machine, which determines the processing of information and principles of interaction of technical means and software.
The computer memory (RAM). Abbreviated the computer memory is called RAM (random access memory) or RAM (random access memory).
What is the bit depth? Bit depth – the ability to simultaneously process a certain number of bits.
All Linux systems come in two versions – 32-bit and 64-bit.
Architectural differences between 32 and 64-bit versions of Linux, of course, is.
The most important features and differences that directly affect the user and encountered:
1. The maximum amount of memory (RAM).
2. The operating system bit count (32 or 64-bit).
3. The bit width of the processor.
The maximum amount of RAM.
32-bit operating system can use “see” no more than 4 GB of RAM. This is the main difference, and the most significant. If your computer’s random access memory (RAM) – 2GB, 32 bit operating system works with this volume is normal.
64-bit operating system can work with much larger amounts of memory – up to 192 GB.
If you’re on a computer with 4 GB of RAM will be running 32-bit OS, it just will not see such a volume. All she can use is about 3.5 GB out of 4 GB. The rest of the volume she can’t provide for running programs. Of course, if you install in a computer with 8 GB of RAM, say, and thus will remain on a 32-bit system, it also does not see more than 3.5 GB of total installed amount and the remaining 4.5 GB will just remain unused.
What features has the 64-bit system?
Visually – no. That is outside it is a normal OS, nothing stands out from the 32-bit version.
Technically there are slight differences.
The first, in fact, that 64-bit OS “sees” large amounts of memory and is able to work with them.
Second – it allows you to run 64-bit applications (32-bit).
The bit width of the processor.
Accordingly, in order to be able to install the 64-bit Linux, your CPU must support 64-bit instructions (otherwise you will not even be able to start installing 64-bit Linux). Called these statements have different options: Intel IA64, AMD – AMD64.
To determine which bit processor (32 or 64-bit) of your computer, run in terminal the following command:
As you can see in the picture after executing the command, the architecture is my computer x86_64, i.e. 64-bit. But the processor supports both 32-bit and 64-bit architecture of the installed systems.
If after executing the command you see the numbers x86, i686 or i386, then your computer’s processor is a 32 bit and you can install only 32-bit systems.
To check the architecture of the installed Linux OS on the computer, run in the terminal one of the following commands: