Despite how amazingly vague your question is, I will try to answer it to the best of my abilities.
The amount of memory your computer needs varies depending on what tasks you tend to do on it. I'm going to assume that you're trying to run a modern operating system like Windows XP or Vista, so keep that in mind if you're using older stuff. Here's a general chart (add on 256 MB or so for Vista):
Lightweight applications, word processing etc.: 256 MB
Lightweight gaming, basic video processing: 512 MB
Moderate gaming, higher level video work, basic 3D animation: 768 MB
Heavy gaming, HD video work, Complex 3D animation: 1024+ MB
I hope this helps you some, but if you need more information, ask a more specific question, and someone will answer your question sooner or later.
Physical memory is how much total memory your computer actually has. Available memory is what memory you have that is not being used.
balls
Every mouths, I used 80 GB
Answer:- The Cache memory is placed between the CPU and the main memory. It is a fast speed memory and is expensive and faster than the main memory. Cache memory is used to store the frequently accessed data of main memory. The instructions that are frequently used by the CPU are stored in the cache memory. It is used to reduce the average access time for address, instructions or data, which are normally stored in the main memory. Cache memory increases the operating speed of the system. But is much costlier than main memory. From economic considerations, the capacity of the cache memory is much less as compared to main memory..
512MB
Used memory cards are like less than $1
My computer which formated recently is very slow with not used much memory?
I always understood it to be 64Kbyte.
Yes. Virtual memory is used when there's not enough RAM in your system. It's just hard drive space that the PC sees as RAM. It is much much slower than RAM though. You could run out of memory if you are running enough programs that your use up all your RAM and your virtual memory is used up.
A memory slot is used for adding memory to your computer.
By checking the requirments of the software that will be used on your system.
The Apollo Guidance Computer on Apollo 13 had 64 KB of memory available for storing programs and data. This memory was used to execute the spacecraft's guidance software and calculations needed for the mission.