A type of RAM that is quicker than dynamic RAM and does not need to be refreshed. Because it is more expensive and holds less data than dynamic RAM, it is used primarily for cache memory.快速缓冲贮存区：比动态随机存取内存更快而且无须刷新的随机存取内存。与动态随机存取内存相比，它的价格更高，储存的数据更少，因此主要用于高速缓冲存储器