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Image for Crucial 2GB Kit (2 x 1GB) DDR2-666 UDIMM from Crucial English Euro Store

Crucial 2GB Kit (2 x 1GB) DDR2-666 UDIMM


  • Brand: Crucial
  • Form Factor: UDIMM
  • Total Capacity: 2GB kit (1GBx2)
  • Warranty: Limited Lifetime
  • Specs: DDR2 PC2-5300 • CL=5 • Unbuffered • NON-ECC • DDR2-667 • 1.8V • 128Meg x 64 •
  • Series: Crucial
  • view all product details
    5 stars 1654 reviews
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    • €34.43 inc. VAT*
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    Crucial 2GB Kit (2 x 1GB) DDR2-666 UDIMM

    product information

    Amount of available storage on the module. If there are parenthesis shown – for example (2 x 4GB) – it indicates a kit of 2 or more identical modules is used to reach the Total Capacity.
    Number of modules. Memory can be installed as single modules or in kits comprised of 2 or more identical modules. Each module requires its own slot for installation.
    Product Specifications
    Brand Crucial
    Form Factor UDIMM
    Total Capacity 2GB kit (1GBx2)
    Warranty Limited Lifetime
    Specs DDR2 PC2-5300 • CL=5 • Unbuffered • NON-ECC • DDR2-667 • 1.8V • 128Meg x 64 •
    Series Crucial
    Kit Qty 2
    Speed 667MHZ
    Tracer False
    Voltage 1.8V
    Bullet Features Easy to install
    DIMM Type Unbuffered
    More information

    240-pin 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 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.)

    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.

    product reviews

    OID: 5E7998C8A5CA7304
    PR file path: /pwr/96v439cu/inline/08/23/5E7998C8A5CA7304-en_GB-1-questions.html

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    get answers from real customers and in-house experts with AnswerBox.

    7 Questions | 13 Answers
    Displaying questions 1-7
    • Q:

      I have a Dell Dimension 5150 / Pentium D940 with 2*512MB(533MHz) RAM. It is very slow to respond and execute actions especially when using the internet and e-mail. Is the 2GB kit appropriate and should it improve performance? What other type of upgrade would assist performance?
      Asked on 12/10/2011 by Anonymous

      1 answer

      • Staff Reviewer


        A RAM upgrade is the cheapest and most effective way to improve the overall speed and performance of your system. It will not necessarily improve your internet speed and you should check this with the provider.

        Answered on 12/12/2011 by Crucial Support from Meridian, Idaho
    • Q:

      Does this product come with full easy to understand instructions for installation.
      Regards Dave
      Asked on 11/4/2011 by Anonymous

      1 answer

    • Q:

      I want to upgrade from 1gB to 4gB. Could I use DDR2 PC2-6400 memory instead of DDR2 PC2-5300 in my Dimension 9100? Does the bandwidth make a difference?
      Asked on 9/25/2011 by Anonymous

      2 answers

      • Staff Reviewer


        The Dimension 9100 can only support DDR2 PC2-5300 speed memory so unfortunately PC2-6400 would not work in that system.

        Answered on 9/28/2011 by Crucial Support from Meridian, Idaho


        DDR Pc2 6400 should be backward compatible ,but it is recommended to use the correct bandwidth in accordance with the bus speed on the motherboard.

        Answered on 10/25/2011 by Jimi H from London
    • Q:

      Hi, Just to clarify a question / answer that has already been asked - Dell specify the memory for my Dimension 5150 as 533Mhz DDR2 PC2-4200. Will the PC2-5300 Crucial memory work OK? I presume it will simply work at the slower speed. Thanks.
      Asked on 9/6/2011 by Anonymous

      3 answers

      • Staff Reviewer


        It will. Our PC2-5300 is the slowest speed of DDR2 memory that we manufacture. We have a very good sales history for this memory when sold against this system.

        Answered on 9/6/2011 by Crucial Support from Meridian, Idaho


        Yes it will work at the slower speed.

        Answered on 11/29/2011 by boeman from Perth


        It works ok in my machine. I replaced two 250 MB memory cards with two 1 GB memory cards and the improvment in computer speed is significant

        Answered on 11/26/2011 by Dell Boy from Isle of Wight
    • Q:

      Your website lists 4GB as the maximum I can install on the above computer, however 2GB kit is recommended.
      Will I get any advantage from installing 4GB versus 2GB?
      (The PC is currently as purchased with just 1GB.
      Thank you for your advice
      Asked on 8/29/2011 by Anonymous

      1 answer

      • Staff Reviewer


        Generally speaking, the more memory you have in your system the better it will perform. It all comes down to what you use the PC for and how happy you are with it's current performance. Bear in mind that if you have a 32-bit version of Windows then installing 4GB will only show as 3.5GB due to the OS limitation.

        Answered on 8/31/2011 by Crucial Support from Meridian, Idaho
    • Q:

      Hi, If I buy this additional memory, do I have to remove the existing 1GB card or do I just install this next to it and have 3GB of RAM. Sorry if this is a stupid question,but I'm a bit unsure.:-)
      Asked on 6/27/2011 by Tc from Devon

      1 answer

      • Staff Reviewer


        According to Dell, this model requires installation in pairs so it is likely that the current 1GB is distributed over 2 slots in 2 x 512MB. This will normally be installed in the first channel. We recommend that the larger modules you intend to purchse be installed in the first channel so just move the original parts to the empty slots and put the new pair in the originally used slots.

        Answered on 6/30/2011 by Crucial Support from Meridian, Idaho
    • Q:

      I have a Dell Dimension 5150 which as 2x512 PC2-4200u mem. could I use this mem as an extra upgrade?
      Asked on 6/26/2011 by Anonymous

      4 answers

      • Staff Reviewer


        Yes, you could certainly use the 2GB Kit (2x 1GB) alongside your existing 2x 512MB. Please ensure the 2G Kit (2x 1GB) is installed in the first slots as those are addressed first by the CPU.

        Answered on 6/27/2011 by Crucial Support from Meridian, Idaho


        Yes. Works fine.

        Answered on 7/8/2011 by Xman from Glasgow


        Yes. This is the same basic spec I had for my kids' computer. Installing the 2GB kit significantly speeded it up.

        Answered on 8/8/2011 by BusyDad from Luton


        yes I have exactly same one and added other 2GB to that it did work perfectly and system automatically picked it up but I didn't see any strong improvements in speed.

        Answered on 8/26/2011 by josse from Aberdeen
    Displaying questions 1-7

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