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Green circuit board with black memory chips, gold edge connector, thin rectangular stick

Computer Memory Solutions

Computer Memory Solutions CM512648500SOSRH 4GB DDR3 1066 CL7 SODIMM memory upgrade

SKU CH-4GDS-C0TWJ

4GB DDR3 1066MHz SODIMM module with CL7 timing for HP Pavilion dm1z notebooks

  • Total capacity4 GB
  • Rated speedDDR3 1066 (PC3 8500)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 4GB capacity upgrades HP Pavilion dm1z notebooks
  • DDR3 1066 CL7 timing matches system bus speed
  • 204-pin SO-DIMM form factor fits laptop memory slots
  • 5V unbuffered design works with standard notebook power
  • Single 4GB module installs in one of two sockets

4 GB DDR3-1066 SO-DIMM for HP Pavilion dm1z

This 4 GB module uses 204-pin DDR3 SO-DIMM form factor and runs at 1066 MHz with CL7 timing. It is built specifically for HP/Compaq Pavilion Notebook dm1z series laptops. The stick is unbuffered, non-ECC and operates at 1.5 V.

Check your laptop before ordering

Confirm the notebook is a dm1z series model and has a free SO-DIMM slot. The system accepts DDR3-1066 (PC3-8500) or DDR3-1333 (PC3-10600) modules, though the bus may run at 1066 MHz. A 64-bit operating system is required to address the full 4 GB. If 4 GB is already installed, the recognised amount may drop to 3.5 GB or less depending on configuration.

Suits single-slot upgrades on dm1z notebooks

Ideal for owners adding a single 4 GB stick to reach the 8 GB two-socket maximum. Not suited for buyers who need ECC or registered memory, modules faster than 1066 MHz, capacities above 4 GB per stick, or laptops outside the dm1z series.

How it compares

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

Price $11.99
Cheaper than about 96% 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 $3.00 per GB
Cheaper 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 nameCM512648500SOSRH
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 rank1Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsHp/Compaq Pavilion Notebook Dm1Z Series
In the box
Included items1 Memory RAM Stick

Questions about this item

What comes in the box and is anything else needed to install this CMS CM512648500SOSRH module?

The package contains one 4GB DDR3 1066 CL7 SODIMM stick. No extra parts or cables are required; the module plugs directly into a free 204-pin slot in a compatible HP/Compaq Pavilion dm1z notebook.

Should I choose this 4GB 1066 MHz CL7 stick or a faster 1333 MHz module for my dm1z?

HP documentation states the dm1z supports both DDR3-1333 (PC3-10600) and DDR3-1066 (PC3-8500), but the memory bus may run at 1066 MHz depending on the processor, so this CL7 module will operate at its rated speed without down-clocking.

How much usable memory will Windows show after installing this 4GB stick in a dm1z?

If 4GB is installed, the recognised memory may be reduced to 3.5GB or less depending on system configuration and memory allocation; a 64-bit operating system is required to address the full 4GB.

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