- RAM is a temporary storage device.
- RAM is acting as an interface ( Mediator ) between Processor and other Peripherals.
Ram Specification :
- RAM Size / Capacity
- RAM Speed
Example :
- RAM Size : 64MB/128MB/256MB/512MB/1GB/2GB/4GB/8GB..
- RAM Speed : 66MHZ/100/133/266/300/400MHZ/666MHZ/1066MHZ..etc
Types of RAM and Packages:
- 1.DRAM ( Dynamic Ram )
- 2.SDRAM ( Synchronous Dynamic RAM )
- 3.DDR ( Double Data Rate )
- 4.DDR2 ( Double Data Rate Two )
- 5.DDR3 ( Double Data Rate Three )
DRAM ( 30 pin SIMM Package ):
- SIMM Stands for Single Inline Memory Module.
- 30 pin SIMM slot are available in 80286 & 80386 Motherboards.
- 30 pin DRAM works with speed of 20 MHz.
DRAM ( 72 pin SIMM Package )
- It works with very low speed 33MHz.
- DRAM uses 72 pin SIMM ( Single Inline Memory Module ) Package.
- Used in 486and Pentium I
- DRAM 72 pin SIMM package has Single Notch.
SDRAM ( Synchronous Dynamic RAM ) Features:
- It is one type of DRAM.
- These are designed to work with equal speed of Motherboards.
- SDRAM speed are
- 66 MHZ for Pentium I
- 100 MHZ for Pentium II
- 133 MHZ for Pentium III
- SDRAM use 168 pin DIMM ( Double Inline Memory Module ) Package.
- It is used in PI,PII and PIII Motherboards.
DDR ( Double Data Rate ) RAM Features:
- It is one type of SDRAM.
- It works double speed of SDRAM by using same clock pulse.
- SDRAM speed is 100 MHZ then DDR works with 200MHZ.
- DDR use 184 pin DIMM Package.
- It is used in Pentium 4 Motherboards with 1845, 1850 Chipsets....etc.
DDR2 RAM Feature:
- DDR 2 is 240 pin DIMM Package.
- DRR2 works with speed of 533/ 666 / 800 / 1066 / 1200 MHz
- DDR2 RAM has Single Notch
- DDR2 RAM support in
- ASUS G41 COMBO P5G41C-M
- ECS/JETWAY Intel G31T-M7
- Jetway / Asrock Intel MI5-G41SGM
- INTEL DDR2 ASROCK G-31 Motherboard ... etc
DDR3 RAM Features:
- DDR is 240 pin DIMM Package.
- DRR2 works with speed of 1600 / 2000MHz.
- DDR2 RAM has Single Notch.
- Supported by i3 / i5 / i7 Motherboards.
How to find out RAM Size, speed & type of RAM?
- Power ON the system
- Press "Tab" key - press "pause" key to stop the screen
- You will get the following information
- In this screen, you will have the information about
- Motherboard model : KVM2
- Type of processor : AMD Sempron Processor 3400+