What is the general relationship among access time memory cost and capacity?
Faster access time, greater cost per bit; greater capacity,
smaller cost per bit; greater
capacity, slower access time.
As a general rule (but there are exceptions) the greater the
capacity of a memory the longer the access time. For a higher cost
the access time of a given capacity memory can usually be shortened
some.
As a general rule (but there are exceptions) the greater the
capacity of a memory the total memory cost increases, but the
memory cost per bit decreases.