SRAM
DRAM
Definition
It is a type of RAM. SRAM essentially uses latches to store charge.
It is also a type of RAM. DRAM makes use of capacitors to store bits in the form of charge.
Speed
Faster
Slower
Size
Bigger
Smaller
Cost
More expensive per bit
Less expensive per bit
Requirement of peripheral circuitary
Comparatively less
Comparatively more
Type
Comparatively less common
Comparatively more common
Capacity (same technology)
Less
5 to 10 times more than SRAM
Applications
Generally in smaller applications like CPU cache memory and hard drive buffers
Commonly used as the main memory in personal computers
Types
Asynchronous SRAM
Synchronous SRAM
Pipeline Burst SRAM
Fast Page Mode DRAM
Extended Data Out DRAM
Burst EDO DRSSM
Synchronous DRAM
Access
Easy
Harder
Construction
Difficult
Simple
Power Consumption
Less
More
Density
Low density/less memory per chip
High density/more memory per chip