We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green circuit board with black memory chips and gold edge connector

Computer Memory Solutions

Computer Memory Solutions CM512648500SODRH 4GB DDR3 1066MHz SODIMM for Compaq Presario Cq56 memory upgrade

SKU CH-K1JV-MD5VT

A 4 GB DDR3 1066 MHz SODIMM module built for Compaq Presario CQ56 notebooks

  • Total capacity64 MB
  • Rated speedDDR3 1066 (PC3 8500)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 4 GB capacity expands multitasking headroom on compatible notebooks
  • DDR3 1066 MHz speed matches PC3-8500 spec for drop-in upgrades
  • CL7 7-7-7 timings deliver low latency for responsive performance
  • 204-pin SODIMM form factor fits Compaq Presario CQ56 slots directly
  • 5 V unbuffered non-ECC design ensures broad laptop compatibility

CMS 4 GB DDR3 SODIMM for CQ56

This 4 GB DDR3 SODIMM runs at 1066 MHz with CL7 timings and 1.5 V operation. It is built for HP and Compaq Presario CQ56 notebooks that accept a single 204-pin unbuffered module. The kit contains one stick ranked 2Rx8 using major-brand chips.

DDR3 1066 limits for older notebooks

The DDR3 1066 interface caps bandwidth at the PC3 8500 rate, so data throughput is fixed by the platform memory controller. Systems that only support this speed cannot use faster DDR3 modules at their rated frequency. Buyers who want more storage or higher memory clocks must choose a newer laptop platform.

Single stick with no heat spreader

The bare green PCB fits tight SODIMM slots without clearance issues. Absence of a heat spreader keeps the module thin for cramped chassis but offers no thermal headroom for sustained loads. This module is not for builders who need a second card or dual-channel kits.

How it compares

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

Price $17.99
Cheaper than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 64 MB
Lower than about 99% of the 20,941 comparable items (median 32 GB).
Price per GB $281.09 per GB
Pricier than about 90% 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 capacity64 MB
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 Notebook Cq56
In the box
Included items1 Memory RAM Stick

Questions about this item

Is the 4 GB module the only capacity available for this CQ56 upgrade?

The listing shows a single 4 GB SODIMM (1×4 GB) as the offered configuration.

What does the 1066 MHz rating mean once the stick is installed in my CQ56?

The module will run at DDR3-1066 (PC3-8500) with CL7 7-7-7 timings at 1.5 V, delivering the rated bandwidth the notebook's memory controller supports.

Will the 204-pin DDR3 SODIMM fit the CQ56's memory slot without an adapter?

Yes — it is a standard 204-pin DDR3 SO-DIMM, the native form factor for the CQ56's DDR3 memory socket.

More in Model-Specific Memory Upgrades

Similar items