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4GB DDR2 PC2-5300 Registered ECC 1.8V 512Meg x 72

Image for 4GB DDR2 PC2-5300 Registered ECC 1.8V 512Meg x 72 from Crucial USA
  • Brand: Crucial
  • Form Factor: RDIMM
  • Module Size: 4GB
  • Warranty: Limited Lifetime
  • Specs: DDR2 PC2-5300 • CL=5 • Dual Ranked • Registered • ECC • DDR2-667 • 1.8V • 512Meg x 72 •
  • Series: Crucial
  • Part number: CT51272AB667
What does this mean?

Image for 4GB DDR2 PC2-5300 Registered ECC 1.8V 512Meg x 72 from Crucial USA
Kit Qty: 1
Speed: 667MHZ
Tracer: False
Voltage: 1.8V
DIMM Type: Registered
Bullet Features: Increases system performance

240-pin DIMM

Approximately 5.25 in. by 1.18 in. (133.35 mm by 30 mm)

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 DIMMs are used to provide DDR2 SDRAM memory for desktop computers. DDR2 is a leading-edge generation of memory with an improved architecture that allows it to transmit data very fast.

Each 240-pin DIMM provides a 64-bit data path (72-bit for ECC or registered or Fully Buffered modules). (The Ballistix™ and Ballistix Tracer™ high-performance memory do not come in 72-bit or registered modules.)

Standard DDR2 240-pin DIMMs are available in DDR2 PC2-3200 SDRAM, DDR2 PC2-4200 SDRAM, DDR2 PC2-5300 SDRAM, and PC2-6400 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.

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 DDR2 DIMM is closer toward the center of the module.

Ballistix and Ballistix Tracer 240-pin DIMMs

Our high-performance Ballistix 240-pin DIMMs come in DDR2 PC2-5300 SDRAM, DDR2 PC2-6400 SDRAM, and DDR2 PC2-8000 SDRAM. The Ballistix Tracer illuminated, activity-indicating high-performance 240-pin DIMM comes in SDRAM, DDR2 PC2-6400 SDRAM, and DDR2 PC2-8000 SDRAM

For more information about the Ballistix memory line, please visit the Ballistix section of our Web site.

Ballistix 240-pin DIMM

Approximately 5.25 in. by 1.18 in. (133.35 mm by 30 mm)

Ballistix Tracer 240-pin DIMM

Approximately 5.25 in. by 1.18 in. (133.35 mm by 30 mm)

OID: 4C569A25A5CA7304
PR file path: /pwr/96v439cu/inline/01/77/4C569A25A5CA7304-en_US-1-reviews.html


by PowerReviews
Crucial4GB 240-pin DIMM DDR2 PC2-5300

(based on 2 reviews)

Ratings Distribution

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Reviewed by 2 customers

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(1 of 1 customers found this review helpful)



By gwenzit

from NJ

About Me Casual User

Verified Buyer


  • Reliable Performance


  • Had no problems to list

Best Uses

  • Increased Performance
  • Multimedia
  • Multiple desktop applications

Comments about Crucial 4GB 240-pin DIMM DDR2 PC2-5300:

Building my CCIE Voice VMware Server takes allot of time and RAM. Every month I buy another 4gb double stacked mem chip for my server. ITs easy, they point you in the right direction and click to buy. Simple does not even describe my experience on They have everything I need.

  • Primary use:
  • Personal

Works Great

By Travis

from Phoenix, AZ

About Me Power user

Verified Buyer


  • Easy To Install
  • Fast
  • Reliable Performance


    Best Uses

      Comments about Crucial 4GB 240-pin DIMM DDR2 PC2-5300:

      After 4 failed attempts though a local reseller, the crucial configuration / memory worked perfect.

      • Primary use:
      • Business

      Displaying reviews 1-2

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