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Green circuit board with black memory chips, gold edge connector, no heat spreader

Computer Memory Solutions

Computer Memory Solutions CM512646400SO 4GB DDR2 800MHz SODIMM Compaq Presario Cq56-219Wm memory upgrade

SKU CH-ASMS-EWBBC

A 4 GB DDR2 800 MHz SODIMM module built for the Compaq Presario Cq56-219Wm laptop

  • Total capacity4 GB
  • Rated speedDDR2 800 (PC2 6400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL6
  • Memory timings6-6-6
  • Rated voltage1.8 V
  • 4GB capacity for multitasking on Compaq Presario Cq56-219Wm
  • DDR2 800MHz speed matches PC2-6400 system requirement
  • 200-pin SODIMM form factor fits laptop memory slot
  • 8V operation aligns with DDR2 platform voltage
  • CL6 6-6-6 timing for responsive memory performance

4 GB DDR2 SODIMM for Compaq Presario Cq56-219Wm

This 200-pin DDR2 module delivers 4 GB at 800 MHz with CL6 timing. It is built for the Compaq Presario Cq56-219Wm laptop and runs at the standard 1.8 V for DDR2 SO-DIMM memory.

Unbuffered non-ECC stick with major-brand chips

The module uses unbuffered, non-ECC chips in a 2Rx8 configuration without a heat spreader. Its 200-pin SO-DIMM edge connector fits the DDR2 SODIMM slots found in the target notebook.

Check your laptop has a free DDR2 SODIMM slot

The Compaq Presario Cq56-219Wm supports a maximum of 8 GB across two slots. Verify that one slot is vacant and that the system BIOS recognises DDR2 800 memory before ordering.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $47.99
Cheaper than about 78% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $12.00 per GB
Pricier than about 57% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM512646400SO
Total capacity4 GB
Product type200-Pin DDR2 SO-DIMM
Performance
Rated speedDDR2 800 (PC2 6400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL6
Memory timings6-6-6
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.8 V
Compatibility
Compatible systemsCompaq Presario Cq56-219Wm
In the box
Included items1 Memory RAM Stick

Questions about this item

What speed does the DDR2 200-pin SO-DIMM run at and what bandwidth does that provide?

The module operates at 800 MHz DDR2, delivering PC2-6400 bandwidth for the Compaq Presario Cq56-219Wm.

What physical slot and pin count does this 4 GB stick require?

It fits a 200-pin DDR2 SO-DIMM socket; the notebook has two such slots and supports up to 8 GB total.

How is the CM512646400SO installed and what common mistake should I avoid?

Power off, unplug, remove the battery, then press the stick firmly into the slot until the side clips click; the error is stopping before the clips engage.

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