Corsair is among the best known memory manufacturers delivering quality products for both desktop and laptop users. Corsair has a full product line for laptop users and today we will looking at Corsair's PC2-4200 and PC2-5400 modules, aimed at enthusiast users wanting to upgrade their laptop memory with 1GB modules.

- Corsair PC2-4200 DDR2 SO-DIMM

Corsair offers PC2-4200 DDR2 SO-DIMM memory in 256, 512 and 1GB modules. The memory specs are typical for this category:

• 533MHz DDR2
• CL 4-4-4-8
• Unbuffered
• 1.8 Volts
• Lifetime Warranty
• 200 Pin DIMM

Corsair's DDR2 SO-DIMMs are built to industry standards, 200 Pin DIMM and CL 4. Most laptops don't offer overclocking features for the memory, which means you are stuck with the default memory timings and voltage.

The package is small, and contains only the memory module:

The product line is called "Value Select" and the order code is VS1GSDS533D2

The memory chips are 64mb modules and have Corsair's logo on them:

- Corsair PC2-5400 DDR2 SO-DIMM

Corsair also offers the PC2-5400 DDR2 SO-DIMM memory in 256, 512 and 1GB modules. The memory specs are again, typical for this category with CL5:

• 667MHz DDR2
• CL 5-5-5-15
• Unbuffered
• 1.8 Volts
• Lifetime Warranty
• 200 Pin DIMM

The retail package with the memory module:

The order code is VS1GSDS667D2

Again, the memory chips have Corsair's logo on them: