667 MHz
400 MHz
133 MHz
266 MHz
333 MHz
800 MHz
100 MHz
533 MHz
66 MHz
200 MHz
1066 MHz
600 MHz
500 MHz
700 MHz
33 MHz
466 MHz
675 MHz
900 MHz
120 MHz
1000 MHz
750 MHz
550 MHz
433 MHz
1150 MHz
25 MHz
125 MHz
366 MHz
300 MHz

PC2-5300
PC3200
PC133
PC2100
PC2700
PC2-3200
PC100
PC2-4200
PC2-6400
PC800
PC66
PC1600
PC1600
PC2-8600
PC4000
PC3700
PC1066
PC2-5400
PC2-7200
PC700
PC600
PC2-8000
PC2-6000
PC3500
PC4400
PC2400
PC3000

CL1.5
CL2
CL2.5
CL3
CL4
CL5
CL6
CL7

ECC
Non-ECC
Registered
Unbuffered

2 Modules
1 Module
3 - 4 Modules
More than 8 Modules
5 - 8 Modules

DIMM 240-pin
DIMM 184-pin
DIMM 168-pin
SO DIMM 200-pin
SO DIMM 144-pin
SIMM 72-pin
RIMM 184-pin
DIMM 100-pin
Proprietary
DIMM 200-pin
SIMM 30-pin
SO DIMM 100-pin
DIMM 232-pin
SO DIMM 72-pin
MicroDIMM 144-pin
MicroDIMM 172-pin
RIMM 168-pin
FB-DIMM
PC Card
DIMM 278-pin
DIMM 208-pin
SIMM 64-pin
RIMM 232-pin

Kingston
Crucial Technology
Hewlett Packard
Cisco
IBM
Axiom Memory
Smart Modular
ACP-EP Memory
EDGE Tech Corp
Dell
OCZ
SimpleTech
PQI
Corsair Memory
Compaq
Acer
Memory Upgrades
Viking InterWorks
Sun
Fujitsu
Lenovo
Apple
PDP Systems
Samsung
PNY
Future Memory Solutions
Transcend
Gateway
Viking
Princeton Digital
Toshiba
Konica Minolta
ASUS
Maxdata
Black Diamond
AMS
Panasonic
Centon Electronics
Abit
Canon
Lanier
Ricoh
SuperTalent
AOpen
NEC
Cléa
Ultra Max
AST
BCM
Gestetner
Sharp
Sony
Modular Technology
Buffalo Technology
SGI / Silicon Graphics
Savin
OKI
Kyocera
Supermicro
Intel
Gigabyte
Infineon
Alienware PC Systems
Chaintech
Pro Series
Lexmark
Dane-Elec
Mitac
Advent
Ultra Products
Generic Memory
Tadpole
Hitachi
Iwill
ASI
ARISTA
General
TMC
QDI Group
Mushkin
APC
3Com
Soltek
DTK
Tatung
DFI
Fujitsu Siemens
Elitegroup
Power Computing
DEC
Aeneon
Adapters.com
Trigem
Packard Bell
Kobian
Motion Computing
GeIL
WELA electronic
X2
Arima

DDR RAM
SDRAM
EDO RAM
RDRAM (Rambus DRAM)
DRAM
DDR2 RAM
FPM RAM
DDR3 RAM
DDR2 DRAM

4 GB
2 GB
1 GB
512 MB
256 MB
Less than 64 MB
64 MB
128 MB
8 GB and more