How much RAM does the Sony VAIO SR Series VGN-SR420J/B support?

The VAIO SR Series VGN-SR420J/B supports up to 8GB of memory across 2 slot(s), up to 4GB per slot.

What type of memory does the VAIO SR Series VGN-SR420J/B use?

It uses DDR2 SODIMM memory modules.

Guaranteed-compatible DDR2 SODIMM upgrades for the Sony VAIO SR Series VGN-SR420J/B, in matched-kit options that fill your slots.

This option is out of stock.

Specifications reported for this system.

Good to know

Maximum capacity per slot is inferred from total capacity ÷ number of slots.
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

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Guaranteed-compatible DDR2 SODIMM upgrades for the Sony VAIO SR Series VGN-SR420J/B, in matched-kit options that fill your slots.

This option is out of stock.

Specifications reported for this system.

Good to know

Maximum capacity per slot is inferred from total capacity ÷ number of slots.
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.