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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.

122 memory upgrades

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Crucial 512MB DDR-400 UDIMM

DDR PC3200 • CL=3 • UNBUFFERED • NON-ECC • DDR400 • 2.6V • 64MEG X 64 •

£15.59 inc. VAT*

Crucial 1GB DDR2-667 UDIMM

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 128MEG X 64 •

£15.59 inc. VAT*

Crucial 1GB DDR2-800 UDIMM

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 128MEG X 64 •

£15.59 inc. VAT*
Image for Crucial 1GB DDR2-667 SODIMM from Crucial UK GBP Store Organization

Crucial 1GB DDR2-667 SODIMM

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 128MEG X 64 •

£15.59 inc. VAT*

Crucial 1GB DDR2-800 SODIMM

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 128MEG X 64 •

£15.59 inc. VAT*

Crucial 2GB DDR3L-1600 UDIMM

DDR3 PC3-12800 • CL=11 • UNBUFFERED • NON-ECC • DDR3-1600 • 1.35V • 256MEG X 64 •

£17.99 inc. VAT*

Crucial 2GB DDR3L-1600 SODIMM

DDR3 PC3-12800 • CL=11 • UNBUFFERED • NON-ECC • DDR3-1600 • 1.35V •

£17.99 inc. VAT*

Crucial 2GB DDR3L-1600 UDIMM

DDR3 PC3-12800 • CL=11 • UNBUFFERED • NON-ECC • DDR3-1600 • 1.35V • 256MEG X 64 •

£17.99 inc. VAT*

Crucial 2GB DDR2-667 SODIMM

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 256MEG X 64 •

£26.39 inc. VAT*

Crucial 2GB DDR2-800 SODIMM

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 256MEG X 64 •

£26.39 inc. VAT*

Crucial 2GB DDR2-667 SODIMM Memory for Mac

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 256MEG X 64 • LEAD FREE • HALOGEN FREE • FOR MAC

£26.39 inc. VAT*

Crucial 2GB DDR2-800 SODIMM Memory for Mac

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 256MEG X 64 • LEAD FREE • HALOGEN FREE • FOR MAC

£26.39 inc. VAT*

Crucial 1GB DDR-333 UDIMM

DDR PC2700 • CL=2.5 • UNBUFFERED • NON-ECC • DDR333 • 2.5V • 128MEG X 64 •

£27.59 inc. VAT*

Crucial 1GB DDR-400 UDIMM

DDR PC3200 • CL=3 • UNBUFFERED • NON-ECC • DDR400 • 2.6V • 128MEG X 64 •

£27.59 inc. VAT*

Crucial 2GB DDR2-666 UDIMM

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 256MEG X 64 •

£27.59 inc. VAT*

Crucial 2GB DDR2-800 UDIMM

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 256MEG X 64 •

£27.59 inc. VAT*
Image for Crucial 2GB Kit (2 x 1GB) DDR2-666 UDIMM from Crucial UK GBP Store Organization

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

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 128MEG X 64 •

£29.99 inc. VAT*

Crucial 2GB Kit (2 x 1GB) DDR2-800 UDIMM

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 128MEG X 64 •

£29.99 inc. VAT*

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

DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 128MEG X 64 •

£29.99 inc. VAT*
Image for Crucial 2GB Kit (2 x 1GB) DDR2-800 SODIMM from Crucial UK GBP Store Organization

Crucial 2GB Kit (2 x 1GB) DDR2-800 SODIMM

DDR2 PC2-6400 • CL=6 • UNBUFFERED • NON-ECC • DDR2-800 • 1.8V • 128MEG X 64 •

£29.99 inc. VAT*
Image for Crucial 1GB DDR-333 UDIMM from Crucial UK GBP Store Organization

Crucial 1GB DDR-333 UDIMM

DDR PC2700 • CL=2.5 • UNBUFFERED • NON-ECC • DDR333 • 2.5V • 128MEG X 64 •

£31.19 inc. VAT*

Crucial 1GB DDR-400 SODIMM

DDR PC3200 • CL=3 • UNBUFFERED • NON-ECC • DDR400 • 2.5V • 128MEG X 64 •

£31.19 inc. VAT*
Image for Crucial 4GB DDR3L-1600 UDIMM from Crucial UK GBP Store Organization

Crucial 4GB DDR3L-1600 UDIMM

DDR3 PC3-12800 • CL=11 • UNBUFFERED • NON-ECC • DDR3-1600 • 1.35V • 512MEG X 64 •

£31.19 inc. VAT*

Crucial 4GB DDR3L-1600 UDIMM

DDR3 PC3-12800 • CL=11 • UNBUFFERED • NON-ECC • DDR3-1600 • 1.35V • 512MEG X 64 •

£31.19 inc. VAT*

Crucial 4GB DDR3L-1600 SODIMM

DDR3 PC3-12800 • CL=11 • UNBUFFERED • NON-ECC • DDR3-1600 • 1.35V •

£31.19 inc. VAT*