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Green rectangular DDR3L SODIMM module with gold edge connector and black memory chips, no heat spreader

OWC

OWC 4GB DDR3L 1600 PC3L-12800 CL11 1Rx8 204-pin 1.35V SODIMM HP Envy 15

SKU CH-68CY-E9FMK

A 4 GB DDR3L 1600 SODIMM module for HP Envy 15 laptops, running at 1.35 V with CL11 latency

  • Capacity4GB
  • Type204-Pin DDR3L Non-ECC SODIMM
  • SpeedDDR3L 1600 (PC3L 12800)
  • CAS LatencyCL11
  • Voltage1.35V
  • ECCNo
  • Boost responsiveness with a 4GB DDR3L 1600 module
  • Lower power draw at 1.35V for cooler operation
  • Fits HP Envy 15 laptops using DDR3 1600 memory
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Simple DIY install with 204-pin SODIMM form factor

HP Envy 15 memory upgrade

This 4GB DDR3L SODIMM is built specifically for HP Envy 15 series notebooks that use DDR3 1600 memory. It provides a straightforward capacity increase for owners who want smoother multitasking without replacing the whole machine. The module follows the exact pin-out and voltage the platform expects.

Thermals and power profile

Operating at 1.35V, the DDR3L module draws less power than standard DDR3, helping battery runtime and reducing heat inside the compact chassis. With no heat spreader, it relies on the laptop’s existing airflow, adding no audible noise. The low-voltage design keeps thermals stable during everyday workloads.

When the upgrade makes sense

The jump is worthwhile when the system currently runs on 4GB or less and struggles with multiple browser tabs or office apps. Adding this single 4GB stick doubles capacity to 8GB in a typical two-slot layout, eliminating constant paging. It will not help if the board already holds the maximum supported memory or requires a different DDR generation.

Highlights

  • Boost responsiveness with a 4GB DDR3L 1600 module
  • Lower power draw at 1.35V for cooler operation
  • Fits HP Envy 15 laptops using DDR3 1600 memory
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Simple DIY install with 204-pin SODIMM form factor

Specifications

BrandOWC
Part Number1S6T31R804GB
Capacity4GB
Type204-Pin DDR3L Non-ECC SODIMM
SpeedDDR3L 1600 (PC3L 12800)
CAS LatencyCL11
Voltage1.35V
ECCNo
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemHP ENVY 15 Series using DDR3 1600 Memory

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Questions about this item

How do I install this 204-pin DDR3L SODIMM in my HP Envy 15, and which step do people often get wrong?

Power off the laptop and remove the battery if accessible. Open the memory compartment, align the notch on the 204-pin module with the slot key, insert at an angle, then press down firmly until both side clips click. The step people miss is pressing hard enough to fully seat the module; a loose fit causes boot failure.

What maintenance or replacement will this 4GB DDR3L 1600 module need later?

No scheduled maintenance is required for this non-ECC SODIMM. Keep the laptop vents clean to prevent overheating. Replacement is only needed if a memory error appears or you upgrade capacity; the module itself has no wear-out parts or batteries to service.

What limit appears first when this CL11 1.35V memory runs under sustained load?

The CAS latency of CL11 at DDR3L 1600 sets the timing floor, so latency-sensitive workloads hit that ceiling before bandwidth saturates. The 1.35V operating voltage also caps overclocking headroom, so sustained heavy use stays within JEDEC spec rather than pushing higher speeds.

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