How much RAM does the HP Pavilion a1543sy support?

The Pavilion a1543sy supports up to 4GB of memory across 4 slot(s), up to 1GB per slot.

What type of memory does the Pavilion a1543sy use?

It uses DDR2 DIMM memory modules.

Guaranteed-compatible DDR2 DIMM upgrades for the HP Pavilion a1543sy, in matched-kit options that fill your slots.

This option is out of stock.

Specifications reported for this system.

Good to know

Faster modules automatically run at your system's maximum supported speed.
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 DIMM upgrades for the HP Pavilion a1543sy, in matched-kit options that fill your slots.

This option is out of stock.

Specifications reported for this system.

Good to know

Faster modules automatically run at your system's maximum supported speed.
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.