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Green circuit board 204-pin DDR3 SODIMM module with black memory chips

OWC

OWC 2GB DDR3 1066 PC3-8500 CL7 1Rx8 204-pin 1.5V Non-ECC SODIMM HP CQ58

SKU CH-EFMB-RV2M3

A 2GB DDR3 1066MHz SODIMM module designed to upgrade HP CQ58 series laptops with CL7 latency and 1.5V operation

  • Capacity2GB
  • Type204-Pin DDR3 Non-ECC SODIMM
  • SpeedDDR3 1066 (PC3 8500)
  • CAS LatencyCL7
  • Voltage1.5V
  • ECCNo
  • Boosts HP CQ58 responsiveness with a 2 GB DDR3 1066 MHz module
  • JEDEC and RoHS compliant for a warranty-safe upgrade
  • CL7 latency and 1.5 V voltage match original system specs
  • Single 1Rx8 rank 204-pin SODIMM fits the laptop slot directly
  • Designed and tested to meet or exceed OEM requirements

Targeted laptop upgrade

This OWC module is a 2GB DDR3 SODIMM built specifically for the HP CQ58 series. It runs at 1066MHz with CL7 latency and 1.5V operation. The unbuffered, non-ECC design matches the original factory specification for these notebooks.

Check your current configuration

Verify that your HP CQ58 uses DDR3 memory before ordering. Confirm the laptop has a free 204-pin slot or that you are replacing an existing module. The system must accept 1Rx8 rank organisation and PC3-8500 speed for correct operation.

Build and daily handling

The module uses a standard green PCB without a heat spreader, keeping the profile low for tight laptop chassis. Gold edge contacts resist oxidation during repeated seatings. JEDEC and RoHS compliance ensure the upgrade is warranty-safe for everyday use.

Helstu kostir

  • Boosts HP CQ58 responsiveness with a 2 GB DDR3 1066 MHz module
  • JEDEC and RoHS compliant for a warranty-safe upgrade
  • CL7 latency and 1.5 V voltage match original system specs
  • Single 1Rx8 rank 204-pin SODIMM fits the laptop slot directly
  • Designed and tested to meet or exceed OEM requirements

Tæknilýsing

BrandOWC
Part Number8S5D31R802GB
Capacity2GB
Type204-Pin DDR3 Non-ECC SODIMM
SpeedDDR3 1066 (PC3 8500)
CAS LatencyCL7
Voltage1.5V
ECCNo
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemHP CQ58 Series using DDR3 Memory

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What comes in the box with the OWC 2GB DDR3 1066 SODIMM and is anything else needed to install it in an HP CQ58?

The package contains a single 2GB DDR3 1066 PC3-8500 CL7 1Rx8 204-pin 1.5V Non-ECC SODIMM module. No extra parts or tools are required for installation in a compatible HP CQ58 laptop.

How do I decide between the available capacities for this DDR3 1066 upgrade?

This listing is for the 2GB module only. If your HP CQ58 has two slots you can add a second identical 2GB stick for 4GB total, or replace the existing module if only one slot is free.

What does the PC3-8500 1066MHz CL7 rating actually deliver once the module is running in the laptop?

The module runs at 1066MHz with CAS latency 7 at 1.5V, matching the JEDEC DDR3 standard for PC3-8500. This gives the HP CQ58 the rated bandwidth and timing the chipset expects for stable operation.

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