Wth are the two types of ram?

Answer 1

There are lots, too many to name. Some of the popular ones are:

EDO (Obsolete)SDRAM (Mostly Obsolete)

RAMBUS (Obsolete) - Data transfers fast, but takes a long time to find. Only used on P4 systems.

DDR/DDR2/DDR3 - Current technology. Basically a pumped up version of SDRAM

GDDR2 - An early version of DDR2, only used on graphics cards.

AnswerDynamic Random Access Memory(DRAM):-

• cotents are constantly refreshed 100times per second.

• Access time 60-70 nanoseconds.

• a nano second is equal to 1billionth of a second.

synchorus dynamic random access memory(SDRAM):-

• quicker than DRAM

• access time than 60seconds.

Direct rambous Dynamic Random Access Memory(DRDRAM):-

• new type of ram architecture.

• access time is 20times faster than DRAM.

• more expensive.

Static random access memory(SRAM):-

• doen't need refreshing.

• retains contents as long as power applied to the chip.

• access time is arround 10seconds.

• used for cache memory.

• also data and time settingsas powered by small battery.

Cache memory:-

• small amount of memory typically 256 or 512 kilobytes.

• temporary storage for often used instructions

• CPU checks to see whether the next instructions it requires in cache.

• if not the CPU has to fetch next information from the main memory.

Video random access memory:-

• holds the data that can b displayed on the computer.

• Has two data paths allowing to READ & WRITE to occur at same time

• a graphics card may hav its own VRM chip on board.

virtual memory:-

• uses backing storage

eg:-harddisk

• virtual memory is much slower than the ram.

Answer 2

I think this might be what you are looking for.

There are two different types of RAM: DRAM (Dynamic Random Access Memory) and SRAM (Static Random Access Memory). The two types differ in the technology they use to hold data, with DRAM being the more common type. In terms of speed, SRAM is faster. DRAM needs to be refreshed thousands of times per second while SRAM does not need to be refreshed, which is what makes it faster than DRAM. DRAM supports access times of about 60 nanoseconds, SRAM can give access times as low as 10 nanoseconds. Despite SRAM being faster, it's not as commonly used as DRAM because it's so much more expensive. Both types of RAM are volatile, meaning that they lose their contents when the power is turned off.

Answer 3

DDR2,DDR3,DDR400,SDRAM and lots more DDR2,DDR3,DDR400,SDRAM and lots more

Answer 4

• SRAM static RAM, retains data as long as power is applied.
• DRAM dynamic RAM, requires periodic refresh memory cycles to retain data.

Answer 5

There are many different types of RAM, or Random Access Memory. The most common you may come across are DDR SDRAM, SDRAM, CMOS RAM and DRAM. Most are used in computers and such devices.

Answer 6

single data rate double data rate