Precipitates can form when two soluble salts react in solution to form one or more insoluble products - as discussed in the famous example below. The insoluble product separates from the liquid and is called a precipitate. Precipitates can also form when the temperature of a solution is lowered.
When the processor needs to read from or write to a location in main memory, it first checks whether a copy of that data is in the cache. If so, the processor immediately reads from or writes to the cache, which is much faster than reading from or writing to main memory.
For example, while a processor may run at 3 GHz, its external clock could be anywhere from a few hundred MHz to 1 GHz. Since the external clock determines how quickly the processor can communicate with the system's memory, it has a significant effect on your processor's real-world speed.rocessors work according to a clock that beats a set number of times per second, usually measured in gigahertz. For instance, a 3.1-GHz processor has a clock that beats 3.1 billion times per second.