What is the difference between cache and RAM?
Your computer stores information in a number of different places, including your cache and your main memory (often called “RAM.”) When you need to retrieve a piece of data, your system first looks in your cache, which is smaller and faster than your memory. If it doesn’t find the information in cache, it looks in your memory. If the information isn’t in your memory, your system looks in your hard drive, which is the slowest and largest of the places data can be stored. In today’s system, cache is usually comprised of SRAM while memory is made out of DRAM. While cache (SRAM) is faster than your main memory (SDRAM), it is also much more expensive. In addition, your memory is easy to upgrade, while upgrading cache is much more difficult.
