What is the difference between cpu and ram

This data does not need constant refreshing is fairly faster than DRAM, however it is expensive and is only used as a cache in a PC. DRAM has memory cells paired with a transistor and capacitor requiring constant refreshing. It is also called a central processor unit, or more commonly a processor.

In large computers, the CPUs require one or more printed circuit boards. However, in personal computers and small workstations, the ones which most of us use, the CPU is housed in a single silicon chip called a microprocessor. The fundamental function of a CPU is to run or execute a program. A program is essentially a sequence of stored instructions, which is represented by a series of numbers that are kept in some kind of computer memory.

CPUs follow a four step process in their operation: fetch, decode, execute, and writeback. In addition to executing a program, the CPU is also responsible for keeping an eye over system functions, for executing scripts, and for making complex calculations, which are often used in software rendering. Featured Posts. Solved: Windows 10 not detecting the second monitor after windows update.

Introduction of Password Manager App and its benefits How to Upgrade to Windows 10 for free Especially from Windows 7. This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish.

Accept Read More. PC Hardware. Last updated Nov 10, 0. You might also like. Featured Posts Windows Steve Ballmer Nov 30, 0. Steve Ballmer Mar 12, 0. Difference Between. Steve Ballmer Sep 25, 1. How To Guide. Steve Ballmer Aug 20, 1.

Steve Ballmer Sep 29, 0. They are then added and the result, which in this case is 13, is then returned to the RAM. The CPU is the actual component that dictates the speed of the entire system as it does the processing. In the old days, not having enough RAM would simply mean that your program would not run.

But nowadays, operating system use page files to extend the RAM so that programs will still run. But page files, which are stored on the hard drive, are very slow and can cause the CPU to wait for the data; thereby slowing down the entire computer. In most computers, with the exception of multi-processor systems, the only way to upgrade a processor would be to replace it with a faster one, mainly because you only have one slot for the processor.

In contrast, there are two or more slots for RAM in a motherboard. Because of this, it is common practice for people who are tight on budget to splurge on the processor then just get a single RAM module. They can later add more RAM modules when they have the budget. It is also worth noting the processors and the motherboard they use are specific to a certain manufacturer.