BBC Bitesize - GCSE Computer Science - CPU and memory - Revision 2
What is the relationship between the processor speed and number of cores RAM and processor work, comparing different sizes of RAM and generations of. Laptop Buying Decisions —Processor Speed and Memory You'll see specifications for RAM and hard-drive data storage capacity when you go laptop . Learn about the CPU and memory and understand how they affect computing performance for GCSE Computer cores; clock speed; cache size; processor type.
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Memory is the temporary storage place for your computers information. When a computer is manipulating some sort of information it is placed in the memory to be retrieves or manipulated later. If all your usable memory gets filled up, the computer will then start storing temporary data on to your hard drive in something called a swap file.
When the CPU is ready to use that information it will then read it back from your hard drive and place it into memory where it can be used. As you can see when you use a swap file, and the CPU needs to access the data it becomes a two-step process in retrieving that data from the hard drive and then stored in the memory, instead of a one step process of reading the data directly from memory.
Even more important is that reading data from memory is many many times faster than reading that same data off the hard drive. With this in mind, you can see how it is important to have as much memory as you can, so that the swap file on your hard drive is never used, and all data is stored and read directly from your memory.Registers and RAM: Crash Course Computer Science #6
Conclusion With all this information we are still left with the burning question of "Which is more important, Memory or CPU Speed" and the answer is neither and both. Got you there didn't I? The real answer depends on how much you have to spend on your new computer and what the base system is. If the base system is at least 2 Ghz then I would apply the money towards memory, otherwise I would increase it to over 2 Ghz.
If you have money left over I would spend the rest of your budget to increase your memory to 4 GB or as close as you can get. These days, you really should have at a bare minimum of 2 GB of memory, with 4 GB being preferred. Using Windows ReadyBoost to Increase Performance in Windows 8, Windows 7, and Windows Vista Have you ever had an experience where you are using a lot of programs in Windows, or a really memory intensive one, and notice that your hard drive activity light is going nuts, there is lots of noise from the hard drive, and your computer is crawling?
This is called disk thrashing and it is when you have run out of physical RAM and instead Windows is using a file on your hard drive to act as a The computer moves programs from the hard drive to memory as needed, but this is very slow. Insufficient memory won't keep the computer from working, but it will run slowly. More memory relieves this bottleneck, though at some point added RAM does not contribute to performance.
You can add memory to most desktop and laptop computers, though the memory for mobile devices tends to be fixed.
cpu - Relationship between RAM & processor speed - Super User
Generally, the faster a processor is, the greater its cost. A few computers have a socket that lets you replace the processor with a faster version, though the processor is permanently soldered in for most PCs.
- CPU and memory
Environment A typical office PC has a single user who runs a handful of programs on it. The processor is mostly idle even when the user is actively typing. In this instance, the computer needs only a moderately fast processor; a speed of MHz is adequate and 2 GHz gives good results.
A server computer, on the other hand, may have hundreds of users. During peak periods, it is never idle, so the computer requires two or more processors each with speeds greater than 2 GHz.