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Green circuit board SODIMM memory module with black chips

Computer Memory Solutions

Computer Memory Solutions CM512648500SODRH 4GB DDR3 1066MHz SODIMM Compaq Presario Cq56 Cq62 Cq42 Cq43

SKU CH-JMNQ-ZGY6M

4GB DDR3 1066MHz SODIMM module for compatible Compaq Presario CQ42, CQ56 and CQ62 notebooks

  • Total capacity4 GB
  • Rated speedDDR3 1066 (PC3 8500)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 4GB capacity expands multitasking headroom on compatible Compaq Presario notebooks
  • DDR3 1066 MHz speed matches PC3-8500 specification for supported models
  • CL7 7-7-7 timing delivers responsive data access at rated frequency
  • 204-pin SODIMM form factor fits CQ42, CQ56 and CQ62 series slots
  • Unbuffered non-ECC design installs directly without server-grade requirements

4 GB DDR3 SODIMM for Compaq Presario

This 4 GB DDR3 1066 MHz module is built for Compaq Presario CQ56, CQ62, CQ42 and CQ43 notebooks. It uses a 204-pin SO-DIMM form factor with CL7 timing and 1.5 V operation. The unbuffered, non-ECC design suits standard laptop memory slots.

Thermals noise and power

DDR3 SO-DIMMs run cool and silent because they have no moving parts and draw only modest power at 1.5 V. Normal office workloads keep the chips well within their thermal envelope without any active cooling.

Sustained load behaviour

Under continuous use the module maintains its rated 1066 MHz speed and CL7 latency. The major-brand chipset and 2Rx8 organisation provide stable throughput for long sessions. Buyers needing more than 4 GB or a faster DDR3 grade should look elsewhere.

How it compares

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

Price $16.99
Cheaper than about 93% 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 $4.25 per GB
Cheaper than about 83% 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 nameCM512648500SODRH
Total capacity4 GB
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1066 (PC3 8500)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL7
Memory timings7-7-7
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsCompaq Presario Cq56, Cq62, Cq42, Cq43
In the box
Included items1 Memory RAM Stick

Questions about this item

How do I install the 204-pin DDR3 SODIMM in my Compaq Presario Cq56, and what step is often missed?

Power off the laptop, remove the battery, open the memory cover, align the notch on the 204-pin module with the slot key, insert at an angle, then press firmly until both side clips click — the click is the step people skip.

Will this 4GB DDR3 1066MHz module need any maintenance or replacement during the laptop's life?

No routine maintenance is required; the module is unbuffered non-ECC with major-brand chips and no heat spreader, so it runs at 1.5V until a fault occurs, at which point you simply replace the stick.

What limit appears first when the CM512648500SODRH runs sustained workloads in a Cq62?

The CL7 1066MHz DDR3 spec and 1.5V operation set the bandwidth and thermal ceiling; under continuous load the memory controller hits its rated speed and voltage limits before any other constraint.

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