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RAM Memory Configurator

2GB, 240-pin DIMM, DDR2 PC2-6400 memory module

2GB, 240-pin DIMM, DDR2 PC2-6400 memory module
Part Number: CT25664AA800
  • Module Size: 2GB
  • Package: 240-pin DIMM
  • Feature: DDR2 PC2-6400
  • Specs: DDR2 PC2-6400 • CL=6 • Unbuffered • NON-ECC • DDR2-800 • 1.8V • 256Meg x 64 •
    What does this mean?
 $35.99
Qty:

240-pin DIMM

240-pin DIMM for DDR2 memory
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
Ballistix 240-pin DIMM for DDR2 memory

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

Ballistix Tracer 240-pin DIMM
Ballistix Tracer 240-pin DIMM for DDR2 memory

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

REVIEW SNAPSHOT®

by PowerReviews
Crucial2GB 240-pin DIMM DDR2 PC2-6400
 
4.8

(based on 343 reviews)

Ratings Distribution

  • 5 Stars

     

    (281)

  • 4 Stars

     

    (50)

  • 3 Stars

     

    (8)

  • 2 Stars

     

    (2)

  • 1 Stars

     

    (2)

98%

of respondents would recommend this to a friend.

Pros

  • Reliable (219)
  • Fast (156)
  • Increases speed (139)
  • Easy to install (136)
  • Large capacity (65)

Cons

  • No instructions included (8)
  • Difficult to install (5)
  • No increase in speed (5)
  • Easy to install (3)

Best Uses

  • Increased performance (225)
  • Multiple desktop applications (179)
  • Multimedia (98)
  • Gaming (42)
  • Back-up (3)
    • Reviewer Profile:
    • Power user (200), Casual user (133)
    • Primary use:
    • Personal (274), Business (58)

Most Liked Positive Review

 

No More Blue Screen of Death!

In April of 2009 my brother-in-law built a new computer system for me. This system had 2X1GB sticks of RAM manufactured by a Crucial rival.

For a year I was plagued by Bl...Read complete review

In April of 2009 my brother-in-law built a new computer system for me. This system had 2X1GB sticks of RAM manufactured by a Crucial rival.

For a year I was plagued by Blue Screens of Death which would wreak havoc with my system.

First I would get the BSOD and reboot. The system would work for a day or two and then another BSOD would come up. This would continue with BSOD's occurring more frequently until eventually my computer would refuse to boot up at all. It was DEAD. MUERTO. MORT. VERSTORBENE. I would then have to reformat my hard drive and reload Windows which everyone knows is a huge pain in the tookas, even if you have faithfully backed up your system regularly.

I'd be good for a month or so and then the cycle would repeat.
BSOD, REBOOT, BSOD, REBOOT, BSOD, DEATH, REFORMAT, RELOAD, Rinse and repeat :(
This cycle of deep annoyance occurred FOUR TIMES.

I tried several different kinds of fixes such as unplugging different peripheral devices, replacing peripherals, updating drivers, etc, but eventually the BSOD would start happening again.

Finally, in late April, 2010, after I started getting the BSOD again I decided to just replace my original RAM with 1X2GB stick of Crucial RAM.

Drum roll...... NO MORE BLUE SCREENS OF DEATH! It was that simple:
1. I had the Blue Screen of Death
2. I replaced the old RAM with Crucial RAM
3. VOILA! System Normal. No more BSOD.

It was amazing, because the cycle of BSOD's had definitely begun again but the cycle was destroyed by my Crucial RAM!

Thank You Crucial, your RAM was CRUCIAL to ending my run of BSODs! Nothing but Crucial RAM in the future for me!

VS

Most Liked Negative Review

 

Upgrade for Dell Optiflex 330

I upgraded my 2GB memory on the spare computer to the maximum of 4GB (allowed by the motherboard) when I installed Windows 7. The install went fine and Windows recognized the increased memory right...Read complete review

I upgraded my 2GB memory on the spare computer to the maximum of 4GB (allowed by the motherboard) when I installed Windows 7. The install went fine and Windows recognized the increased memory right away. The Windows 7 assessment gave me a 5.5 score for the memory, about what I expected. Ordering was simple and service was fast. I also installed Crucial memory on my main computer without any problems.

Reviewed by 343 customers

Sort by

Displaying reviews 1-10

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5.0

fast simple

By mrmister4

from atlanta,ga

About Me Power user

Verified Buyer

Pros

  • Badly Needed Ram
  • Fast
  • Increases Speed
  • Reliable Performance

Cons

    Best Uses

    • Increased Performance
    • Multiple desktop applications

    Comments about Crucial 2GB 240-pin DIMM DDR2 PC2-6400:

    easy upgrade

    • Primary use:
    • Personal
     
    5.0

    Made old PC run new!!!!

    By Administrative Assistant

    from Charleston, SC

    About Me Power user

    Verified Buyer

    Pros

    • Fast
    • Increases Speed
    • Reliable Performance

    Cons

      Best Uses

      • Increased Performance
      • Multiple desktop applications

      Comments about Crucial 2GB 240-pin DIMM DDR2 PC2-6400:

      This is for one of my faculty's office PC. It was very slow and continually had to shut down and reboot.

      Adding the memory made this old computer run like new!

      Thanks!

      • Primary use:
      • Business
       
      5.0

      Flawless!!!

      By Air Master X

      from Grapeville, PA

      About Me Casual User

      Pros

      • Fast
      • Increases Speed
      • Large Capacity
      • Reliable Performance

      Cons

        Best Uses

        • Gaming
        • Increased Performance

        Comments about Crucial 2GB 240-pin DIMM DDR2 PC2-6400:

        Bought this RAM stick for my wifes DELL Optiplex GX520. Very easy to install. Win 7 reconized it right away and no problems with it at all. Recommend it.

        • Primary use:
        • Personal
         
        5.0

        Plug em in and play

        By Deadguy

        from Northern Wisconsin

        About Me Power user

        Verified Buyer

        Pros

        • Fast
        • Large Capacity

        Cons

          Best Uses

          • Multimedia
          • Multiple desktop applications

          Comments about Crucial 2GB 240-pin DIMM DDR2 PC2-6400:

          Plugged right in and worked no problems. Speeded up a upgrade on older system.

          • Primary use:
          • Business
           
          4.0

          AWESOME POWER

          By Randude

          from NEW HAMPSHIRE

          About Me Power user

          Verified Buyer

          Pros

          • Fast
          • Increases Speed
          • Reliable Performance

          Cons

            Best Uses

            • Gaming
            • Increased Performance
            • Multimedia
            • Multiple desktop applications

            Comments about Crucial 2GB 240-pin DIMM DDR2 PC2-6400:

            My Ram was on its way out, had crashes all the time. Now I can multitask, play games and have a dozen tabs in my browser open without any problems at all. I also upgraded my OS so I needed this new ram anyway. I only wish my MB was 64 bit, I guess thats next upgrade.

            • Primary use:
            • Personal
             
            5.0

            Worth it!

            By Steve

            from Austin, TX

            About Me Casual User

            Verified Buyer

            Pros

            • Fast
            • Increases Speed
            • Large Capacity
            • Reliable Performance

            Cons

              Best Uses

              • Increased Performance
              • Multiple desktop applications

              Comments about Crucial 2GB 240-pin DIMM DDR2 PC2-6400:

              Increased performance on my XPS 410.

              • Primary use:
              • Personal
               
              4.0

              Asked and answered

              By toby

              from Frost Bite Falls

              About Me Casual User

              Verified Buyer

              Pros

              • Fast

              Cons

                Best Uses

                • Increased Performance
                • Multiple desktop applications

                Comments about Crucial 2GB 240-pin DIMM DDR2 PC2-6400:

                I'll be back!!!

                • Primary use:
                • Personal

                (1 of 1 customers found this review helpful)

                 
                5.0

                Best Product Ever!

                By Allan

                from Bal Harbour, FL

                About Me Casual User

                Verified Buyer

                Pros

                • Fast
                • Increases Speed
                • Large Capacity
                • Reliable Performance

                Cons

                  Best Uses

                  • Increased Performance

                  Comments about Crucial 2GB 240-pin DIMM DDR2 PC2-6400:

                  Absolutely thrilled with increased performance on every level after doubling my Ram total.

                  • Primary use:
                  • Personal
                   
                  5.0

                  Workin' Good or Well, either way.

                  By moebedder

                  from Fenton MO

                  About Me Casual User

                  Verified Buyer

                  Pros

                  • Fast
                  • Increases Speed

                  Cons

                  • No complaints

                  Best Uses

                  • Increased Performance
                  • Multiple desktop applications

                  Comments about Crucial 2GB 240-pin DIMM DDR2 PC2-6400:

                  Working well so far.

                  • Primary use:
                  • Personal

                  (1 of 1 customers found this review helpful)

                   
                  3.0

                  Instructions missing

                  By Gerryc1620

                  from Venice, FL

                  About Me Casual User

                  Verified Buyer

                  Pros

                    Cons

                      Best Uses

                      • Increased Performance

                      Comments about Crucial 2GB 240-pin DIMM DDR2 PC2-6400:

                      After reviewing the scan results and looking at the choices I thought that the RAM would be shipped with instructions. I have installed new/additional RAM quite some many years ago and I was supprised that RAM is RAM today or ten years ago. I also came away from the transaction with the idea that the product would be delivered sooner than 7 days. Hmmmmm, guess I must be having senior hours or days rather than just momenents. Glad I did not need it that soon.

                      Anyway the product was as described and my home videos load faster and allow more editing so I am satisfied.

                      • Primary use:
                      • Personal

                      Displaying reviews 1-10

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