Sign In | My Account
Live chat by SightMax
Check Out  Check Out
Products Computer





Sales & Specials
To learn about sales and specials, sign up for the OEM Newsletter!
Email
 

OEMPCWorld.com recognized by BizRate Circle of Excellence 2009


Company Profile
Home > 

240 pin DDR2 & DDR3 DIMM memory

 


Browse by Type:

240 pin DDR2
Type

240 pin DDR2

PC2-3200 400Mhz 256MB 512MB 1GB 2GB
PC2-3200 ECC 400Mhz 256MB 512MB 1GB      
PC2-3200 ECC Registered 400Mhz Dual Rank 256MB 512MB 1GB 2GB 4GB  
PC2-3200 ECC Registered 400Mhz Single Rank     1GB 2GB    
PC2-4200 533Mhz 256MB 512MB 1GB 2GB    
PC2-4200 ECC 533Mhz 256MB 512MB 1GB 2GB    
PC2-4200 ECC Registered 533Mhz 256MB 512MB 1GB 2GB 4GB  
PC2-4200 ECC Registered 533Mhz Single Rank       2GB    
PC2-4200 ECC Fully Buffered 533Mhz   512MB 1GB 2GB 4GB  
PC2-5300 667Mhz   512MB 1GB 2GB    
PC2-5300 ECC 667Mhz   512MB 1GB 2GB    
PC2-5300 ECC Registered 667Mhz   512MB 1GB 2GB 4GB  
PC2-5300 ECC Registered 667Mhz Single Rank       2GB    
PC2-5300 ECC Registered 667Mhz Dual Rank Very Low Profile         4GB  
PC2-5300 ECC Fully Buffered 667Mhz   512MB 1GB 2GB 4GB  
PC2-5300 ECC Fully Buffered 667Mhz Apple         4GB  
PC2-6400 800Mhz   512MB 1GB      
PC2-6400 ECC 800Mhz   512MB 1GB      
PC2-6400 ECC Registered 800Mhz   512MB 1GB     8GB
PC2-6400 ECC Fully Buffered 800Mhz Apple       2GB    

 

240 pin DDR3
Type

240 pin DDR3

PC3-8500 1066Mhz 512MB 1GB 2GB 4GB    
PC3-8500 ECC 1066Mhz   1GB 2GB      
PC3-8500 ECC Registered 1066Mhz         8GB 16GB
PC3-10666 1333Mhz 512MB 1GB 2GB      
PC3-10666 ECC 1333Mhz       4GB    
PC3-10666 ECC Registered 1333Mhz         8GB  
PC3-10666 ECC Registered 1333Mhz Apple         8GB 16GB

 

240 pin DDR3
Kits

240 pin DDR3

PC3-10666 1333Mhz 3GB 6GB

 


Module Speed Rating DDR Chip Speed Rating Front-Side Bus Clock Frequency
PC2-3200 DDR2-400 200MHz
PC2-4200 DDR2-533 266MHz
PC2-5300 DDR2-667 333MHz
PC2-6400 DDR2-800 400MHz
PC3-8500 DDR3-1066 533MHz
PC3-10666 DDR3-1333 667MHZ

240 pin DDR2 & DDR3

A dual inline memory module (DIMM) consists of a number of memory components attached to a printed circuit board. The gold pins on the bottom of the DIMM provide a connection between the module and a socket on a printed circuit board. The pins on the front and back of a DIMM are not connected to each other.

DDR2 SDRAM use 240-pin DIMM sockets for desktop computers. Each 240-pin DIMM provides a 64-bit data path (72-bit for ECC or registered modules), so they are installed one at a time in 64-bit systems. DDR2 chipsets are expected to support dual-channel memory, providing a 128-bit data path.

240-pin DIMMs are available in DDR2 or DDR3 SDRAM.

Memory modules (Unbuffered, Registered, Small Outline DIMMs) have a special “key” or notch in their connector. These keys must align with a key in the memory socket to allow the module to be inserted. All DDR3 and DDR2 module types are keyed differently.

To use DDR2 memory, your system motherboard must have 240-pin DIMM slots and a DDR2-enabled chipset. A DDR2 SDRAM DIMM will not fit into a standard SDRAM DIMM socket or a DDR DIMM socket. DDR2 modules use a 1.8V power supply, providing a big power saving over the 2.5V DDR modules.

To use DDR3 memory, your system motherboard must have 240-pin DIMM slots and a DDR3-enabled chipset. A DDR3 SDRAM DIMM will not fit into a standard SDRAM DIMM socket, DDR DIMM socket or DDR2 socket. DDR3 modules use a 1.5V power supply, providing a big power saving over the 2.5V DDR modules or 1.8V DDR2 modules. DDR3 is the next generation of Double Data Rate (DDR) Synchronous Dynamic Random Access Memory (SDRAM). It is an evolution of DDR and DDR2 memory technology that delivers higher speeds, lower power consumption and heat dissipation.

The number of components on a 240-pin DIMM may vary, but they always have 120 pins on the front and 120 pins on the back. 240-pin DIMMs are approximately 5.25" long and 1.18" high, though the heights may vary. While 240-pin DDR2 DIMMs, 184-pin DDR DIMMs and 168-pin DIMMs are approximately the same size, 240-pin DIMMs and 184-pin DIMMs have only one notch within the row of pins. The notch in a 240-pin DDR2 DIMM is slightly more toward the center of the module.

DDR2 Performance range:
        200Mhz (5.0ns @CL=3)
        267MHz (3.75ns@CL=4)
. Power supply: VDD:1.8V±0.1V
. Bi-directional data strobe (DQS)
. Differential clock inputs (CK and CK#)
. DLL aligns DQ and DQS transition with CK transition
. Auto & self refresh capability (8192 Cycles / 64ms)
. Double-data-rate architecture; two data transfers per clock cycle
. Programmable Read latency: 3 and 4 (clock)
. Programmable Burst length: 4 or 8
. Programmable Burst type (Sequential & Interleave)
. Edge aligned data output, center aligned data input
. Serial presence detect with EEPROM
 

For Installation Help please see "How to Install Guides"