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Crucial Community Forum

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2GB DDR2 PC2-6400 Unbuffered NON-ECC 1.8V 256Meg x 64

Image for 2GB DDR2 PC2-6400 Unbuffered NON-ECC 1.8V 256Meg x 64 from Crucial USA
  • Brand: Crucial
  • Form Factor: SODIMM
  • Module Size: 2GB
  • Warranty: Limited Lifetime
  • Specs: DDR2 PC2-6400 • CL=6 • Unbuffered • NON-ECC • DDR2-800 • 1.8V • 256Meg x 64 •
  • Series: Crucial
  • Part number: CT25664AC800
What does this mean?

Image for 2GB DDR2 PC2-6400 Unbuffered NON-ECC 1.8V 256Meg x 64 from Crucial USA
ECC: NON-ECC
Kit Qty: 1
Speed: 800MHZ
Tracer: False
Voltage: 1.8V
DIMM Type: Unbuffered
Bullet Features: Increases system performance

200-pin SODIMM


DDR 200-pin SODIMM: Approximately 2.625 in. by 1.25 in. (66.7 mm by 31.75 mm)
 
DDR2 200-pin SODIMM: Approximately 2.625 in. by 1.18 in. (66.7 mm by 30 mm)

A small outline dual inline memory module (SODIMM) consists of a number of memory components (usually black) that are attached to a printed circuit board (usually green). SODIMMs get their name because they are smaller and thinner than regular DIMMs. The gold pins on the bottom of the SODIMM provide a connection between the module and a socket on a larger printed circuit board. The pins on the front and back of a SODIMM are not connected.

200-pin SODIMMs are used to provide DDR and DDR2 SDRAM memory for notebook computers. 200-pin SODIMMs are available in PC2700 DDR SDRAM, PC3200 DDR SDRAM, DDR2 PC2-6400 SDRAM, DDR2 PC2-5300 SDRAM, DDR2 PC2-4200 SDRAM and DDR2 PC2-3200 SDRAM. To use DDR or DDR2 memory, your system motherboard must have 200-pin SODIMM slots and a DDR- or DDR2-enabled chipset. A DDR or DDR2 SODIMM will not fit into a standard SDRAM SODIMM socket. (Information about which memory technology your system uses is included in the Crucial Memory Advisor™ tool.)

The number of black components on a 200-pin SODIMM can vary, but it always has 100 pins on the front and 100 pins on the back, for a total of 200. 200-pin SODIMMs are approximately 2.625 inches long and 1.25 inches high, though the heights can vary. Like 144-pin SODIMMs, 200-pin SODIMMs have one small notch within the row of pins; however, the notch on the 200-pin SODIMMs is closer to the left side of the module.

OID: AF3F7960A5CA7304
PR file path: /pwr/96v439cu/inline/05/57/AF3F7960A5CA7304-en_US-1-reviews.html

REVIEW SNAPSHOT®

by PowerReviews
Crucial2GB 200-pin SODIMM DDR2 PC2-6400
 
4.8

(based on 148 reviews)

Ratings Distribution

  • 5 Stars

     

    (130)

  • 4 Stars

     

    (13)

  • 3 Stars

     

    (4)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

99%

of respondents would recommend this to a friend.

Pros

  • Reliable (94)
  • Fast (70)
  • Increases speed (70)
  • Easy to install (64)
  • Large capacity (17)

Cons

  • No instructions included (6)

Best Uses

  • Increased performance (96)
  • Multiple desktop applications (61)
  • Multimedia (30)
  • Gaming (5)
    • Reviewer Profile:
    • Casual user (78), Power user (68)
    • Primary use:
    • Personal (118), Business (29)

Most Liked Positive Review

 

3GB->4GB Crucial Memory Positive Upgrade

This memory upgrade was problem free; easy. It took just one or two minutes to complete the installation. The customer service was excellent; [...] I will buy from them again and...Read complete review

This memory upgrade was problem free; easy. It took just one or two minutes to complete the installation. The customer service was excellent; [...] I will buy from them again and I already recommended them to a relative who will procure 4GB from them soon. The improvement of performance is great just going from 3GB to 4GB. I am considering adding a 4GB memory chip stick; but so far my Zino HD (Dell 400) works fast and fine for my multiple program uses. I use Kubuntu (debian based) and Microsoft Windows 7. I some times run Xubuntu which is really fast with this chip set. The installation involves unscrewing two phillips screws underneath the Zino. The cover comes off with the two chips staggered one over the other. I did not need to remove the top chip to lift up and out the bottom chip (new one.) I surf the web, buy stuff online, use emacs, write and read email; but I don't do any gaming. I watched youtube and hulu or it is hula? Both worked great on my Zino. I have an AMD Athlon 3250e processor, ATI Radeon HD 3200 Video Card, 250 GB Hard Drive. I'm delighted with this chip set.

VS

Most Liked Negative Review

 

Wouldn't work with Toshiba A215-S5837

Wanted to upgrade my girlfriend's Toshiba A215-S5837 and went with Crucial - I always do and they've never let me down.

I used the compatibility tool to choose and went...Read complete review

Wanted to upgrade my girlfriend's Toshiba A215-S5837 and went with Crucial - I always do and they've never let me down.

I used the compatibility tool to choose and went with two of these. Old memory was 5300 speed, these are 6400 - but they were supposed to be compatible.

Computer wouldn't boot, no error message - nothing. Put the old memory back in and back to normal. Tried one module at a time, thinking one was possibly bad, no change.

Emailed support and made a few calls (support staff is excellent!) and tried everything they suggested, including BIOS update - no help.

Finally they suggested this test - one old module (known to work) in the A slot and a new module in the B slot. This would force the B slot to run at 5300 as long as it was good (odds of two bad sticks shipping is tiny.)

Jackpot! Booted with no problem and recognized the total 3gb installed when tried with both new modules - indicating the problem is a BIOS / motherboard intolerance for the faster speed.

So they are now going to exchange these two for two 5300 sticks, and I am sure all will be well.

P.S. - they were kind enough to extend the time limit on the exchange despite the fact my girlfriend took the laptop on vacation for two weeks because the site said it was compatible and I had contacted them with the issue. Crucial's support and customer service is #1!

So if you own this machine, be aware the newer faster modules may not work.

I remain a loyal Crucial customer!

Reviewed by 148 customers

Sort by

Displaying reviews 1-10

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5.0

Excellent Service and Product

By Ricci

from Hamilton, VA

About Me Power user

Verified Reviewer

Pros

  • Fast
  • Increases Speed
  • Large Capacity
  • Reliable Performance

Cons

    Best Uses

      Comments about Crucial 2GB 200-pin SODIMM DDR2 PC2-6400:

      I use my HP netbook so many different ways, but it needed new storage memory. This product was perfect.

      • Primary use:
      • Business
       
      5.0

      just what I needed thank you

      By Keithv_2

      from Pana,IL

      About Me Power user

      Pros

      • Fast
      • Increases Speed
      • Reliable Performance

      Cons

        Best Uses

        • Increased Performance
        • Multiple desktop applications

        Comments about Crucial 2GB 200-pin SODIMM DDR2 PC2-6400:

        improved my windows experience and can use aero snap
        in windows 7 without running slow:)

        • Primary use:
        • Personal
         
        5.0

        Like new

        By Cbwing

        from MO

        About Me Casual User

        Verified Buyer

        Pros

        • Fast
        • Increases Speed

        Cons

          Best Uses

          • Increased Performance
          • Multiple desktop applications

          Comments about Crucial 2GB 200-pin SODIMM DDR2 PC2-6400:

          Upgraded 2008 iMac from 2GB to 6. It was simple. I'm not computer savy. It's a new machine to me. I'm glad I read reviews to go for 6GB upgrade vs Apple's 4GB max recommendation.

          • Primary use:
          • Personal
           
          5.0

          Ram Ram Ram

          By Skip

          from Grapeview, Wa.

          About Me Casual User

          Verified Buyer

          Pros

          • Fast
          • Increases Speed
          • Large Capacity
          • Reliable Performance

          Cons

          • No Instructions Included

          Best Uses

          • Increased Performance
          • Multiple desktop applications

          Comments about Crucial 2GB 200-pin SODIMM DDR2 PC2-6400:

          Came without install instructions.I just went on the web and found how to do it for my computer. Easy to do.Went from 1gb to 4gb.VW to Tesla speed increase.

          • Primary use:
          • Personal
           
          5.0

          2GB 200-pin SODIMM DDR2 PC2-6400

          By Adrian

          from Montreal, Quebec, Canada

          About Me Casual User

          Verified Buyer

          Pros

          • Increases Speed

          Cons

            Best Uses

            • Increased Performance

            Comments about Crucial 2GB 200-pin SODIMM DDR2 PC2-6400:

            Excellent upgrade to an aging laptop, however, this was not an inexpensive upgrade.

            • Primary use:
            • Personal
             
            5.0

            great but no instructions

            By jeb

            from Rockport Texas

            About Me Casual User

            Verified Buyer

            Pros

            • Fast
            • Increases Speed
            • Large Capacity
            • Reliable Performance

            Cons

            • No Instructions Included

            Best Uses

            • Increased Performance

            Comments about Crucial 2GB 200-pin SODIMM DDR2 PC2-6400:

            I have no remarks about the 4gig chips bevause

            • Primary use:
            • Personal
             
            5.0

            Works Beautifully!

            By FourWheelDrive

            from Fletcher, OH

            About Me Power user

            Verified Reviewer

            Pros

            • Fast
            • Increases Speed

            Cons

              Best Uses

              • Increased Performance

              Comments about Crucial 2GB 200-pin SODIMM DDR2 PC2-6400:

              I upgraded my Acer AspireOne from 1 GB to 2 GB or RAM. It doesn't get bogged down nearly as much.

              • Primary use:
              • Personal
               
              5.0

              Exactly what I needed

              By Keekee

              from Burlington NC

              About Me Casual User

              Verified Buyer

              Pros

              • Fast
              • Increases Speed

              Cons

                Best Uses

                • Increased Performance
                • Multiple desktop applications

                Comments about Crucial 2GB 200-pin SODIMM DDR2 PC2-6400:

                I needed additional RAM for my netbook because it was slowing down when I would open multiple tabs. I found that this was the best value for my money and I got exactly what I was looking for.

                • Primary use:
                • Personal
                 
                5.0

                works greattt

                By jer

                from nesquehoning,pa.

                About Me Power user

                Verified Buyer

                Pros

                • Fast
                • Increases Speed
                • Reliable Performance

                Cons

                  Best Uses

                  • Gaming
                  • Increased Performance
                  • Multiple desktop applications

                  Comments about Crucial 2GB 200-pin SODIMM DDR2 PC2-6400:

                  switched from 2gb to 4gb as all my laptop would take. increased speed 3 fold at least.

                   
                  5.0

                  Works with iMac

                  By SeventyFour

                  from Portland, Oregon

                  About Me Casual User

                  Verified Buyer

                  Pros

                  • Increases Speed
                  • Large Capacity
                  • Reliable Performance

                  Cons

                    Best Uses

                    • Increased Performance

                    Comments about Crucial 2GB 200-pin SODIMM DDR2 PC2-6400:

                    I wanted to increase the RAM on my 2008 iMac. The Mac came with two 1 GB RAM chips. I ordered two 2 GB chips from Crucial. It was easy to do the replacement myself (instructions from Apple) and the new chips work fine. With more RAM, my iMac no longer bogs down when running multiple operations.

                    • Primary use:
                    • Personal

                    Displaying reviews 1-10

                    Back to top

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