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Green printed circuit board with black memory chips and gold edge contacts

OWC

OWC 4GB DDR4 2400MHz CL17 1.2V 260pin SODIMM for HP ProBook 450 G6 470 G5 640 G4 640 G5 645 G4 memory upgrade

SKU CH-2B1V-NWRT5

4 GB DDR4 2400 MHz CL17 SODIMM for HP ProBook 450 G6, 470 G5, 640 G4, 640 G5 and 645 G4

  • Capacity4GB
  • Type260-Pin DDR4 Non-ECC SODIMM
  • SpeedDDR4 2400 (PC4 19200)
  • CAS LatencyCL17
  • Voltage1.2V
  • ECCNo
  • Boost responsiveness with 4GB DDR4 2400MHz CL17 module
  • Low 1.2V operation reduces power draw and heat
  • 260-pin SODIMM fits HP ProBook 450 G6 470 G5 640 G4 640 G5 645 G4
  • JEDEC compliant and ROHS certified for reliable compatibility
  • Single-rank 1Rx8 unbuffered design ensures stable performance

Compatible HP ProBook Models

This 4 GB DDR4 SODIMM is built for HP ProBook 450 G6, 470 G5, 640 G4, 640 G5 and 645 G4 laptops. It targets owners of those specific notebooks who need a straightforward memory increase. The module is JEDEC compliant and RoHS compliant, delivering a warranty-safe upgrade path. It suits users who want to add capacity without changing voltage or form factor.

Sustained Load Behaviour

The stick runs at 2400 MHz with CL17 latency at the standard 1.2 V, unbuffered and non-ECC. Under continuous workloads it maintains the rated JEDEC timings without requiring extra voltage or active cooling. Each module is tested in-house before shipping to verify stability across extended sessions. The single-rank 1Rx8 organisation helps keep signal integrity consistent during prolonged multitasking.

Pre-Order Checklist

Confirm your laptop appears in the supported model list above before purchase. Verify the machine accepts 260-pin DDR4 SODIMMs and has a free slot for this 4 GB module. Ensure the system BIOS is up to date so the new stick is recognised at its rated speed. Note that optimal performance typically requires matching capacity, speed and manufacturer across all installed DIMMs.

Helstu kostir

  • Boost responsiveness with 4GB DDR4 2400MHz CL17 module
  • Low 1.2V operation reduces power draw and heat
  • 260-pin SODIMM fits HP ProBook 450 G6 470 G5 640 G4 640 G5 645 G4
  • JEDEC compliant and ROHS certified for reliable compatibility
  • Single-rank 1Rx8 unbuffered design ensures stable performance

Tæknilýsing

BrandOWC
Part Number2S4D41R804GB
Capacity4GB
Type260-Pin DDR4 Non-ECC SODIMM
SpeedDDR4 2400 (PC4 19200)
CAS LatencyCL17
Voltage1.2V
ECCNo
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemHP ProBook 450 G6
HP ProBook 470 G5
HP ProBook 640 G4
HP ProBook 640 G5
HP ProBook 645 G4

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Does the 1.2V DDR4 module add noticeable heat or fan noise during all-day use?

The 1.2V DDR4 SODIMM runs at standard JEDEC voltage without a heat spreader, so it adds minimal thermal load and no audible noise in compatible ProBook chassis.

What must the laptop already have for this 260-pin SODIMM to work?

A free DDR4 SO-DIMM slot and a BIOS that accepts 2400 MHz CL17 1Rx8 unbuffered non-ECC memory — present in the listed ProBook 450 G6, 470 G5, 640 G4, 640 G5 and 645 G4 models.

Will this 4GB stick run correctly alongside the original 8GB DDR4 module in my ProBook 640 G5?

Yes — it matches the required DDR4 2400 CL17 1.2V spec, though OWC recommends matching capacity and rank for optimal dual-channel performance.

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