G-2
Dynamic RAM (DRAM) Memory Technologies
Type
FPM (60,70ns)
EDO (50,60,70ns)
SDRAM (66MHz)
SDRAM (100MHz)
SDRAM (133MHz)
RDRAM (Direct Rambus)
DDR SDRAM (100MHz)
DDR SDRAM (133MHz)
First Used
1990
1994
1996
1998
1999
1999
2000
2000
Clock Rate
25MHz
40MHz
66MHz
100MHz
133MHz
400MHz
100MHz
133MHz
Bus* Width
64 bits
64 bits
64 bits
64 bits
64 bits
16 bits
64 bits
64 bits
Bandwidth
200 MBps
320 MBps
528 MBps
800 MBps
1.1 GBps
1.6 GBps
1.6 GBps
2.1 GBps
Volts
5v
5v
3.3v
3.3v
3.3v
2.5v
3.3v
3.3v
Peak
* Memory channel width (64 bits started with 75MHz Pentium)
Source: Computer Desktop Encyclopedia
power consumption. PCs usually contain a small amount of battery-powered CMOS
memory to retain the date, time, and system setup parameters.
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:
DVI
1) Short for
D
igital
V
isual
I
nterface
, a digital interface standard created by the Digital
Display Working Group (DDWG) to convert analog signals into digital signals to
accommodate both analog and digital monitors.
2) Short for
D
igital
V
ideo
I
nteractive
, a now-defunct technology developed by General
Electric that enables a computer to store and display moving video images like those on
television.
IDE
(Integrated Drive Electronics)
A type of disk-drive interface widely used to connect hard disks, CD-ROMs and tape
drives to a PC, in which the controller electronics is integrated into the drive itself,
eliminating the need for a separate adapter card. The IDE interface is known as the
ATA (AT Attachment) specification.
IEEE 1394
A new, high speed external bus standard, also known as
FireWire
or
iLink
, which
