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Green circuit board with black memory chips, 260 gold pins, no heat spreader

OWC

OWC 4GB DDR4 2400 CL17 1.2V 260pin SODIMM HP ProBook 445R 455 455R 640 650 G6 G3 memory upgrade

SKU CH-0SA9-PGE38

4GB DDR4 2400 CL17 SODIMM module upgrades HP ProBook 445R G6, 455 G6, 455R G6, 640 G3 and 650 G3 laptops with JEDEC-compliant memory

  • Total capacity4 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank1Rx8
  • 4GB capacity adds responsive multitasking headroom
  • DDR4 2400 speed matches factory specifications
  • CL17 latency keeps data flowing smoothly
  • 2V operation reduces power draw and heat
  • Validated for ProBook 445R G6 455 G6 455R G6 640 G3 650 G3

OWC 4GB DDR4 2400 SODIMM for HP ProBook

This 4GB DDR4 2400MHz CL17 module is built for specific HP ProBook laptops. It runs at 1.2V as a 260-pin non-ECC unbuffered SODIMM with a 1Rx8 rank configuration and no heat spreader. OWC tests every unit in-house to meet JEDEC and RoHS standards for a warranty-safe upgrade.

Suits owners of listed ProBook models needing

Buyers whose laptop is not an HP ProBook 445R G6, 455 G6, 455R G6, 640 G3 or 650 G3 should look elsewhere. Systems requiring ECC registered memory or a different DDR generation will not accept this module. It is a single 4GB DIMM, so configurations needing higher capacity per slot or matched pairs must consider other options.

Check your ProBook model number

Verify the exact model name matches the supported list before ordering. Confirm the laptop has an available 260-pin DDR4 SODIMM slot and that the BIOS recognises 2400MHz CL17 1.2V unbuffered memory. OWC recommends using identical capacity, speed and manufacturer modules for optimal performance.

How it compares

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

Price $24.99
Cheaper than about 88% 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 $6.25 per GB
Cheaper than about 63% 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 nameOWC
Part number2S4D41R804 GB
Total capacity4 GB
Product type260-Pin DDR4 Non-ECC SODIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportNo
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsHP ProBook 445R G6
HP ProBook 455 G6
HP ProBook 455R G6
HP ProBook 640 G3
HP ProBook 650 G3

Other versions of this model

5 more in the same range

Questions about this item

What laptop slot does the 260-pin SODIMM fit into?

The module plugs into any standard DDR4 260-pin SO-DIMM slot found in the HP ProBook 445R G6, 455 G6, 455R G6, 640 G3 or 650 G3.

Can I mix this CL17 2400 MHz stick with slower DDR4 already in my ProBook?

Yes, the system will run all installed modules at the speed of the slowest stick, so existing slower DDR4 will still work alongside this module.

How do I confirm the 4 GB module is recognised at 2400 MHz after installation?

Open Task Manager or BIOS and verify the installed memory shows 4 GB running at 2400 MHz with CL17 timings.

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