Explain the term "volatile" memory - This word refers to the type of memory that requires electrical power to be maintained to keep the data stored., What are the key differences between RAM and ROM? - RAM is high speed and volatile memory. ROM is non-volatile., Which type of memory RAM or ROM is used for the primary memory in a computer? - RAM is the primary memory storage in a computer., What is virtual memory? - The type of memory used when the primary memory or RAM is full. It involves using secondary storage such as the hard drive to mimic the RAM except it is so slow., Why does having more cores improve CPU performance? - This means that instructions can be processed data independently. This means more instructions are completed per second., What is the risk of overclocking a CPU? - This can generate excess heat. If this extra heat is not dispersed effectively it can lead to failure of components., As a user of a computer, how would you know you are using virtual memory? - This type of memory is so slow, you would know!!!, What does the acronym BIOS mean? - Basic Input Output System, What type of memory is the BIOS stored in? - It is stored in a ROM chip on the motherboard, When is virtual memory used? - This is used when the primary storage is full and another application requires some more memory., What are the three factors that effects the CPU performance? - Clock speed; cache; number of cores., What do we really mean when we say a CPU with a higher clock speed runs faster? - Computers don't have legs, they don't run. However if you carry out instructions per second at a higher rate then we say "the computer is fast"., It is important to have lots of RAM to avoid using this type of memory. - Virtual memory, How do good quality GPU's help the CPU's perform better? - They have many, many cores and can do some jobs extremely well, they take some of the workload away from CPU., Explain why doubling the number of cores doesn't double the speed of the computer. - Having many cores speeds things up a lot if the program has been written in a parallel fashion, it doesn't help if the program is written in a way that requires the previous instruction to be done before the next. Also the speed of a computer always have factors which limit it, so doubling one thing doesn't mean you will double the speed.,

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