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Crucial 8GB Kit (2x4GB) DDR2 RAM 667MHz, PC2-5300 240-pin DIMM, CT2KIT51272AF667.

Crucial 8GB Kit (2x4GB) DDR2 RAM 667MHz, PC2-5300 240-pin DIMM, CT2KIT51272AF667

SKU: CT2KIT51272AF667

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• High-Speed technology
• Gives your system a true performance boost
• Lower energy expenditure
• Module Size: 8GB kit (4GB x 2)
• Package: 240-pin DIMM
• Condition: Brand New (See Description)
£74.99 inc. vat

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Brand New & Sealed. Official UK Stock. Next Working Day Delivery (M-F.)


1 Year

Crucial 8GB (2 X 4GB Kit) PC5300 DDR2 Fully Buffered ECC RAM 

Give your computer system a true performance boost with this precision-made 240-pin DIMM memory module from Crucial. Whether you're building a new PC or upgrading an existing one, you'll appreciate the swift performance that your system will benefit from when you use fast-performing DDR operating memory.


240-pin Fully Buffered DIMM


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

240-pin fully buffered DIMMs (FBDIMMs) are used to provide DDR2 SDRAM memory for servers and motherboards that use FBDIMM technology, as opposed to conventional registered DIMM (RDIMM) technology. DDR2 is a leading-edge generation of memory with an improved architecture that allows it to transmit data very fast. FBDIMM technology utilizes an advanced memory buffer that allows modules to be connected in series — meaning that more memory modules can be connected (and thus memory density is increased) and errors at the connection points are reduced. 

Each 240-pin DIMM provides a 64-bit data path (72-bit for ECC or registered or fully buffered modules). 

DDR2 240-pin fully buffered DIMMs are available in DDR2 PC2-4200 SDRAM and DDR2 PC2-5300 SDRAM. 

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. 

To use fully buffered DIMMs, your server or motherboard must use FBDIMM architecture. An FBDIMM will not fit into a standard DDR2 socket, and a DDR2 module will not fit into an FBDIMM socket. 

The number of black components on a 240-pin DIMM can vary, but it always has 120 pins on the front and 120 pins on the back, for a total of 240. 240-pin DIMMs are approximately 5.25 inches long and 1.18 inches high, though the heights can 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 fully buffered DDR2 DIMM is in a different location than the notch for regular 240-pin DDR2 modules.




Upgrade Type



8 GB : 2 x 4 GB

OEM Manufacturer Equivalent Part Number

IBM 46C7420, Sun SESX2D1Z, Sun X4290AF, DELL A2257185, DELL A2257184, DELL A2257179, IBM 45J6193, HP 397415-B21, HP EM162AA, Sun X4402A, Sun X6382A, HP 466440-B21, IBM 40V6419, IBM 43R1773, HP 483403-B21, DELL A2146192, HP 397415-S21, DELL A2257233, IBM 43R1710, DELL A2257178, DELL A2257180, DELL A2257181, DELL A2257182, DELL A2257183, DELL A2257232, Kingston KFJ-BX667K2/8G, Kingston KTA-XE667K2/8G, Kingston KTD-WS667/8G, Kingston KTH-XW667/8G, Kingston KTH-XW667LP/8G, Kingston KTH-XW9400LPK2/8G, Kingston KTL-TSD10K2/8G, Kingston KTM5780LP/8G, Kingston KTS4400K2/8G, Kingston KTS6380K2/8G, Kingston KVR667D2D4F5K2/8G, Kingston KVR667D2D8F5K4/8G, Kingston KVR667D2Q8F5K2/8G, Kingston KVR667D2Q8F5VK2/8G, Fujitsu S26361-F3263-L524, Fujitsu S26361-F3263-L624






Form Factor

FB-DIMM 240-pin

Data Integrity Check



Fully Buffered

Module Configuration

512 x 72


667 MHz ( PC2-5300 )


1.8 V

Latency Timings


Expansion / Connectivity

Compatible Slots

2 x memory - FB-DIMM 240-pin





Delivery information

To cater the needs of all customers, we offer two delivery options at checkout so you can choose one which best suits your requirements.

Free UK Delivery

In this option we will deliver your product free of charge but it will take 3 to 5 working days for the product to be delivered.

Next Working Day Delivery

If you want your desired product to be delivered next working day you will have to place your order before 3pm. The delivery charge is £6.95 at the time of placing order. This option does not include delivery on Saturday or Sunday.