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Green rectangular circuit board with gold edge connector and black memory chips

OWC

OWC 4GB DDR3 1333 CL9 1.5V 204-pin SODIMM memory upgrade

SKU CH-MBNB-RE0S5

A single 4GB DDR3 1333 CL9 1.5V SODIMM module for HP ProBook 4230s, 4310s, 4320s, 4325s and 4326s laptops

  • Total capacity4 GB
  • Rated speedDDR3 1333 (PC3 10600)
  • CAS latencyCL9
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • Boosts multitasking with 4GB DDR3 1333MHz CL9 SODIMM
  • Fits HP ProBook 4230s 4310s 4320s 4325s 4326s
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Simple DIY install with 204-pin unbuffered design
  • Lifetime warranty backed by OWC tech support

Single-module 4 GB DDR3 SODIMM

This 204-pin DDR3 module delivers 4 GB at 1333 MHz with CL9 latency and 1.5 V operation. It is built to JEDEC and RoHS standards and validated for the HP ProBook 4230s, 4310s, 4320s, 4325s and 4326s. The unbuffered, non-ECC design installs without tools in most compatible notebooks.

Suits owners of listed ProBooks needing

Builders who require ECC, registered DIMMs, a different voltage or a higher capacity per module should look elsewhere. Systems that only accept 1.35 V low-voltage DDR3 cannot use this stick. The 2Rx8 rank layout may not work in platforms limited to single-rank modules.

2Rx8 rank configuration

The module uses a dual-rank 2Rx8 organisation, which determines whether the memory controller can address the full 4 GB. Check the service manual for your specific ProBook model to confirm dual-rank support before purchase.

How it compares

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

Price $18.99
Cheaper than about 91% 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 $4.75 per GB
Cheaper than about 80% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number1S3D32R804 GB
Total capacity4 GB
Product type204-Pin DDR3 Non-ECC SODIMM
Performance
Rated speedDDR3 1333 (PC3 10600)
Memory
CAS latencyCL9
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsHP ProBook 4230s
HP ProBook 4310s
HP ProBook 4320s
HP ProBook 4325s
HP ProBook 4326s

Other versions of this model

5 more in the same range

Questions about this item

Which HP ProBook models must I own for this 204-pin DDR3 1333 CL9 SODIMM to be compatible?

The module is validated for HP ProBook 4230s, 4310s, 4320s, 4325s and 4326s, so one of those laptops is required for a supported installation.

Will this 1.5 V PC3-10600 module work alongside the original memory already in my ProBook?

Yes, it is an unbuffered non-ECC DDR3 SODIMM at the same voltage and speed, so it can run in dual-channel with the factory-installed sticks.

How can I confirm the 4 GB upgrade is running at DDR3 1333 CL9 after installation?

Open Task Manager or a system-information utility and verify the memory speed shows 1333 MHz with CAS latency 9 for the new module.

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