because the D in Dram is short for dynamic....
DRAM is dynamic RAM or, if you prefer, dynamic random-access memory.
SRAM (Static RAM) and DRAM (Dynamic RAM)
memory cache is a small amount of RAM (referred to as static RAM) that is much faster than the rest of the RAM, which is called dynamic RAM (DRAM).
RAM that stores data in separate capacitors.
Disadvantages of DRAM Dram having have access time compared to SRAM. It needs extra circuit to refresh the cell which refreshes the Dram thousand times per second. So it requires more power.
Direct Rambus DRAM or DRDRAM (sometimes just called Rambus DRAM or RDRAM) is a type of synchronous dynamic RAM. RDRAM was developed by Rambus inc., in the mid-1990s as a replacement for then-prevalent DIMM SDRAM memory architecture.
DRAM requires continuous electrical power to retain its contents. If the power is interrupted even for a fraction of a second, the memory is wiped.
In the most common form of computer memory, dynamic random access memory (DRAM).
There are three main types. DRAM - Dynamic Ram, which is the RAM in most computers. It's called Dynamic because there is a need for circuitry in the computer to constantly refresh the data. It will lose all data if power is removed. SRAM - Static Ram. Not as common but used to be used in laptops and portable devices. Called Static as you don't have to refresh all the time, but it does lose the data if you turn the power off. It is lower power than DRAM, but not as high capacity Flash RAM - though there are lots of names for this. Used in USB keys etc. It saves data even after the power is turned off. Access to it is a lot slower than DRAM.
Five types of computer memory are: Dynamic Random Access Memory (DRAM) Synchronous DRAM (SDRAM) Static RAM (SRAM) Double Data Rate RAM (DDR) Rambus DRAM (RDRAM)
It's the same thing, Synchronous Dynamic RAM (SDRAM) is typically just a different name for DRAM.
due to permanent storage