TYPES OF RAM | IDENTIFY YOUR PC MEMORY

There are some types of ram, on the markets.
1. SIMM Memory (Single In-line Memory Module)
Model 30-pin:
Model 72-pin:
As aforesaid, these memories have been developed with the advent of the first Pentium processors and 386/486 (586) and Pentium Pro, so we face (even in terms of time in the computer field) in memory of "vintage ". Probably you can still see the market models of 72-pin (although very rarely), but we are the technical details:
The first (30-pin ones) are 8-bit memories, 01simm30pin-skt-l (1). jpgerano then needed four of these modules to reach the bus, so typical of motherboards that time, it was 32 ​​bit. They were introduced as models 72-pin, characterized by the fact of working with 32-bit bus, which then could also be mounted in odd numbers. With the release of the first Pentium in particular, the bus rose up to 64 bits,
2. FPM SIMM (Fast Page Mode)
Memories in fast page mode, is a "variant" of the 72-pin model. Their peculiarity is that it allows access to various bits that are all on the same line of memory, providing them one after another without pause. Their access time, in fact, is about 60 ns, especially the memories of this type that could make the phase overhead (cycles used for internal management) in 6 clock cycles, while all other stages in 3 clock cycles. The nex Types of Ram is
3. SIMM EDO (Extended Data Out) 
EDO memories are the evolution of FPM memory, because they use almost the same operating principle. But then what they have more memory? Their strong point, is the fact that while the FPM disable the column and the buffer after the "storage", the type of EDO memory buffer keeps the active, ready and then the next column until it is active or completed another cycle clock. This speeds up data storage, which will run continuously and running. Their access times ranging from 60 to 50 ns.
4. DIMM Memory (Dual In-line Memory Module)
5. SDRAM
6. SDRAM ECC
7. DIMM SDRAM DDR (Double Data Rate) and the last types of ram is
8. DDR
 Also DDR memory, there are versions ECC and Registered ECC, with a similar function to the SDRAM (ECC or ECC Registered).

TYPES OF RAM | DDR RAM img