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Crucial desktop, laptop, and Mac® computer memory (RAM)

A memory upgrade is one of the fastest, easiest, and most affordable ways to immediately improve the performance of your computer. If your PC laptop, desktop, workstation, or Mac system is running slowly, installing more memory takes as little as five minutes and delivers immediate and lasting improvements. Speed up your system, increase responsiveness, multitask with ease, and extend the lifespan of your computer with a reliable desktop memory, laptop memory, or Mac memory upgrade. Learn more in our Memory Information Guide.


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    results 1 - 25 of 407
    Crucial 1GB DDR-400 SODIMM

      part #: CT12864X40B
    • DDR PC3200 • CL=3 • Unbuffered • NON-ECC • DDR400 • 2.5V • 128Meg x 64 •
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    • £29.99 inc. VAT*
    out of stock
    Crucial 1GB DDR-333 UDIMM

      part #: CT12864Z335
    • DDR PC2700 • CL=2.5 • Unbuffered • NON-ECC • DDR333 • 2.5V • 128Meg x 64 •
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    • £27.59 inc. VAT*
    out of stock
    Crucial 1GB DDR-400 UDIMM

      part #: CT12864Z40B
    • DDR PC3200 • CL=3 • Unbuffered • NON-ECC • DDR400 • 2.6V • 128Meg x 64 •
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    • £27.59 inc. VAT*
    out of stock
    Crucial 2GB Kit (2 x 1GB) DDR-333 UDIMM

      part #: CT2KIT12864Z335
    • DDR PC2700 • CL=2.5 • Unbuffered • NON-ECC • DDR333 • 2.5V • 128Meg x 64 •
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    • £55.19 inc. VAT*
    out of stock
    Crucial 2GB Kit (2 x 1GB) DDR-400 UDIMM

      part #: CT2KIT12864Z40B
    • DDR PC3200 • CL=3 • Unbuffered • NON-ECC • DDR400 • 2.6V • 128Meg x 64 •
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    • £55.19 inc. VAT*
    out of stock
    Crucial 1GB Kit (2 x 512MB) DDR-400 UDIMM

      part #: CT2KIT6464Z40B
    • DDR PC3200 • CL=3 • Unbuffered • NON-ECC • DDR400 • 2.6V • 64Meg x 64 •
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    • £31.19 inc. VAT*
    out of stock
    Crucial 512MB DDR-400 UDIMM

      part #: CT6464Z40B
    • DDR PC3200 • CL=3 • Unbuffered • NON-ECC • DDR400 • 2.6V • 64Meg x 64 •
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    • £15.59 inc. VAT*
    out of stock
    Crucial 1GB DDR2-667 UDIMM

      part #: CT12864AA667
    • DDR2 PC2-5300 • CL=5 • Unbuffered • NON-ECC • DDR2-667 • 1.8V • 128Meg x 64 •
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    • £14.39 inc. VAT*
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    Crucial 1GB DDR2-800 UDIMM

      part #: CT12864AA800
    • DDR2 PC2-6400 • CL=6 • Unbuffered • NON-ECC • DDR2-800 • 1.8V • 128Meg x 64 •
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    • £14.39 inc. VAT*
    add to cart
    Crucial 1GB DDR2-667 SODIMM

      part #: CT12864AC667
    • DDR2 PC2-5300 • CL=5 • Unbuffered • NON-ECC • DDR2-667 • 1.8V • 128Meg x 64 •
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    • £14.39 inc. VAT*
    add to cart
    Crucial 1GB DDR2-800 SODIMM

      part #: CT12864AC800
    • DDR2 PC2-6400 • CL=6 • Unbuffered • NON-ECC • DDR2-800 • 1.8V • 128Meg x 64 •
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    • £14.39 inc. VAT*
    add to cart
    Crucial 2GB DDR2-666 UDIMM

      part #: CT25664AA667
    • DDR2 PC2-5300 • CL=5 • Unbuffered • NON-ECC • DDR2-667 • 1.8V • 256Meg x 64 •
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    • £26.39 inc. VAT*
    add to cart
    Crucial 2GB DDR2-800 UDIMM

      part #: CT25664AA800
    • DDR2 PC2-6400 • CL=6 • Unbuffered • NON-ECC • DDR2-800 • 1.8V • 256Meg x 64 •
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    • £26.39 inc. VAT*
    add to cart
    Crucial 2GB DDR2-667 SODIMM

      part #: CT25664AC667
    • DDR2 PC2-5300 • CL=5 • Unbuffered • NON-ECC • DDR2-667 • 1.8V • 256Meg x 64 •
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    • £25.19 inc. VAT*
    add to cart
    Crucial 2GB DDR2-800 SODIMM

      part #: CT25664AC800
    • DDR2 PC2-6400 • CL=6 • Unbuffered • NON-ECC • DDR2-800 • 1.8V • 256Meg x 64 •
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    • £25.19 inc. VAT*
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    Crucial 4GB Kit (2 x 2GB) DDR2-667 SODIMM Memory for Mac

      part #: CT2C2G2S667MCEU
    • DDR2 PC2-5300 • CL=5 • Unbuffered • NON-ECC • DDR2-667 • 1.8V • 256Meg x 64 • lead free • halogen free • for Mac
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    • £51.59 inc. VAT*
    out of stock
    Crucial 4GB Kit (2 x 2GB) DDR2-800 SODIMM Memory for Mac

      part #: CT2C2G2S800MCEU
    • DDR2 PC2-6400 • CL=6 • Unbuffered • NON-ECC • DDR2-800 • 1.8V • 256Meg x 64 • lead free • halogen free • for Mac
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    • £51.59 inc. VAT*
    view details
    Crucial 2GB DDR2-667 SODIMM Memory for Mac

      part #: CT2G2S667MCEU
    • compare
    • Add to wish list
    • £25.19 inc. VAT*
    out of stock
    Crucial 2GB DDR2-800 SODIMM Memory for Mac

      part #: CT2G2S800MCEU
    • compare
    • Add to wish list
    • £25.19 inc. VAT*
    out of stock
    Crucial 2GB Kit (2 x 1GB) DDR2-666 UDIMM

      part #: CT2KIT12864AA667
    • DDR2 PC2-5300 • CL=5 • Unbuffered • NON-ECC • DDR2-667 • 1.8V • 128Meg x 64 •
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    • Add to wish list
    • £28.79 inc. VAT*
    add to cart
    Crucial 2GB Kit (2 x 1GB) DDR2-800 UDIMM

      part #: CT2KIT12864AA800
    • DDR2 PC2-6400 • CL=6 • Unbuffered • NON-ECC • DDR2-800 • 1.8V • 128Meg x 64 •
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    • Add to wish list
    • £28.79 inc. VAT*
    add to cart
    Crucial 2GB Kit (2 x 1GB) DDR2-666 SODIMM

      part #: CT2KIT12864AC667
    • DDR2 PC2-5300 • CL=5 • Unbuffered • NON-ECC • DDR2-667 • 1.8V • 128Meg x 64 •
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    • Add to wish list
    • £28.79 inc. VAT*
    add to cart
    Crucial 2GB Kit (2 x 1GB) DDR2-800 SODIMM

      part #: CT2KIT12864AC800
    • DDR2 PC2-6400 • CL=6 • Unbuffered • NON-ECC • DDR2-800 • 1.8V • 128Meg x 64 •
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    • Add to wish list
    • £28.79 inc. VAT*
    add to cart
    Crucial 4GB Kit (2 x 2GB) DDR2-667 UDIMM

      part #: CT2KIT25664AA667
    • DDR2 PC2-5300 • CL=5 • Unbuffered • NON-ECC • DDR2-667 • 1.8V • 256Meg x 64 •
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    • Add to wish list
    • £52.79 inc. VAT*
    add to cart
    Crucial 4GB Kit (2 x 2GB) DDR2-800 UDIMM

      part #: CT2KIT25664AA800
    • DDR2 PC2-6400 • CL=6 • Unbuffered • NON-ECC • DDR2-800 • 1.8V • 256Meg x 64 •
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    • £52.79 inc. VAT*
    add to cart
    results 1 - 25 of 407
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