MSI MS-6390 User Manual page 72

Glossary
example, a modem chipset contains all the primary circuits for transmitting and receiv-
ing data; a PC chipset provides the electronic interfaces between all subsystems.
CMOS (complementary metal-oxide semiconductor)
CMOS is a widely used type of semiconductor, which features high speed and low
power consumption. PCs usually contain a small amount of battery-powered CMOS
memory to retain the date, time, and system setup parameters.
COM
In MS-DOS system, the name of a serial communications port. DOS supports four
serial ports. For example, if a modem is connected to one serial port and a serial mouse
to another, they are identified as COM1 and COM2.
DIMM (dual in-line memory module)
A small circuit board that holds memory chips. A SIMM (single in-line memory
module) has a 32-bit path to the memory chips whereas a DIMM has 64-bit path.
DRAM (Dynamic RAM)
A most common type of computer memory. It usually uses one transistor and a
capacitor to represent a bit. As the development of technology, the memory type and
specification used in computer becomes variety, such as SDRAM, DDR SDRAM, and
RDRAM. For further instruction, please see the table below:
Type
FPM (60,70ns)
EDO (50,60,70ns)
SDRAM (66MHz)
SDRAM (100MHz)
SDRAM (133MHz)
RDRAM (Direct Rambus)
DDR SDRAM (100MHz)
DDR SDRAM (133MHz)
* Memory channel width (64 bits started with 75MHz Pentium)
Source: Computer Desktop Encyclopedia
Dynamic RAM (DRAM) Memory Technologies
First Used Clock Rate
1990
1994
1996
1998
1999
1999
2000
2000
Bus* Width
25MHz 64 bits
40MHz 64 bits
66MHz 64 bits
100MHz 64 bits
133MHz 64 bits
400MHz 16 bits
100MHz 64 bits
133MHz 64 bits
G-2
Peak Volts
Bandwidth
200 MBps 5v
320 MBps 5v
528 MBps 3.3v
800 MBps 3.3v
1.1 GBps 3.3v
1.6 GBps 2.5v
1.6 GBps 3.3v
2.1 GBps 3.3v