16GB DDR3L-1600 PC3L-12800S 1.35V CL11 204-Pin SO-DIMM Memory RAM

This listing is for one 16GB DDR3L-1600 low-voltage laptop memory module built in the 204-pin SO-DIMM form factor. It provides a 1600 MT/s data rate, PC3L-12800S bandwidth, 1.35V operation, CL11 latency, and a dual-rank 2Rx8 organization.

The module is suitable for compatible laptops, mobile workstations, all-in-one computers, and compact systems specifically documented to support one 16GB DDR3L SO-DIMM. A system advertised with a 16GB maximum is not automatically compatible because that capacity may require two 8GB modules.

Technical Specifications

• Product Type: Laptop and compact-system memory module
• Capacity: 16GB
• Module Configuration: One 16GB module
• Memory Technology: DDR3L SDRAM
• JEDEC Speed: DDR3L-1600
• PC Rating: PC3L-12800 / PC3L-12800S
• Data Transfer Rate: 1600 MT/s
• I/O Clock: 800 MHz
• Maximum Theoretical Bandwidth: 12.8GB/s
• Operating Voltage: 1.35V
• CAS Latency: CL11
• Form Factor: SO-DIMM
• Pin Count: 204-pin
• Rank: Dual rank
• Organization: 2Rx8 / 2G × 64
• Data Width: 64-bit
• ECC Support: Non-ECC
• Buffering: Unbuffered
• Registered: No
• SPD Support: Yes
• Nominal Dimensions: Approximately 67.6mm × 30mm
• Connector Type: Gold-edge 204-pin SO-DIMM
• Application: Compatible notebooks, mobile workstations, all-in-one computers, and compact systems supporting 16GB-per-slot DDR3L memory
• Package Contents: One 16GB memory module
• Important: This is a single 16GB module and not a 2×8GB kit

Interchangeable / Replacement Part Numbers

The following confirmed references identify modules manufactured or sold with the same core 16GB DDR3L-1600 PC3L-12800S 1.35V CL11 204-pin non-ECC unbuffered 2Rx8 specification.

4X70J32868, 03X7015, MT16KTF2G64HZ-1G6A1, MT16KTF2G64HZ-1G6, CT204864BF160B, CT204864BF160B.16FA, CT204864BF160B.C16FA, CT204864BF160B.M16FA, CT204864BF160B.C16, TS2GSK64W6Q, MES3S160BM16G28, 900848, OWC1600DDR3S16G, SP192863, 4X70J32868-AX, 4X70J32868-AA, 4X70J32868-HY, CT204864BF160B-AA, AX31600S11B/16L, AX53495577/1, AXG53495577/1, INT1600SB16L, INT1600SB16L-AX, M4L-PC31600ND3D811SL-16G, 4X70J32868, 03X7015, MT16KTF2G64HZ1G6A1, MT16KTF2G64HZ1G6, CT204864BF160B, TS2GSK64W6Q, MES3S160BM16G28, OWC1600DDR3S16G, AX31600S11B16L, PC3L12800S

⚠️ Critical 16GB Module Compatibility Notice

Before ordering, verify that the system supports all of the following:

• One 16GB module in a single memory socket
• High-density 16GB DDR3L SO-DIMM memory
• 204-pin SO-DIMM construction
• PC3L-12800S / DDR3L-1600
• 1.35V low-voltage operation
• Non-ECC unbuffered memory
• Dual-rank 2Rx8 organization

A computer supporting 16GB total through two 8GB modules is not necessarily compatible with this single 16GB module.

For systems covered by option number 4X70J32868, the option documentation specifically excludes Haswell-processor configurations. Do not determine compatibility from the connector, DDR3L designation, or total system-memory specification alone.

This module is not interchangeable with:

• 8GB PC3L-12800S modules
• 16GB kits containing two 8GB modules
• PC3L-12800E ECC SO-DIMMs
• PC3L-12800R registered server memory
• PC3L-12800U 240-pin desktop memory
• 1.5V-only PC3-12800 memory where 1.35V DDR3L is required
• DDR4 SO-DIMMs
• Modules using a different rank or DRAM-device organization when the host requires 2Rx8

⭐➕ Other Available Listings

03X7015 16GB DDR3L-1600 PC3L-12800S 1.35V CL11 204-Pin SO-DIMM
CT204864BF160B.C16FA 16GB DDR3L-1600 PC3L-12800S 1.35V CL11 204-Pin SO-DIMM
MT16KTF2G64HZ-1G6A1 16GB DDR3L-1600 PC3L-12800S 1.35V CL11 204-Pin SO-DIMM

The linked pages identify the same core memory specification under different module, option, service, or production-label numbers.

✅ Confirmed Compatibility

Compatibility below is limited to systems documented or specifically validated for a single 16GB DDR3L SO-DIMM. Processor and motherboard variations can still exist within a model family.

Option-Documented Systems

✔️ ThinkPad L Series: L460 machine types 20FU and 20FV; L560 machine types 20F1 and 20F2
✔️ ThinkPad P Series: P40 Yoga machine types 20GQ and 20GR; P50s machine types 20FK and 20FL
✔️ ThinkPad T Series: T450s machine types 20BW and 20BX; T460 machine types 20FM and 20FN; T560 machine types 20FH and 20FJ
✔️ ThinkPad W Series: W550s machine types 20E1 and 20E2
✔️ ThinkPad X Series: X250 machine types 20CL and 20CM
✔️ ThinkPad Yoga Series: Yoga 14 machine type 20FY; Yoga 460 machine types 20EL and 20EM

Additional System-Specific 1×16GB Validations

The following models have system-specific memory-vendor validation for one 16GB DDR3L-1600 SO-DIMM. These are independent upgrade validations rather than universal approval for every configuration.

✔️ ThinkPad E Series: E425, E435, E450, E455, E460, E525, E550, E555, E560, E565
✔️ ThinkPad L Series: L450 configurations documented for one 16GB DDR3L module
✔️ ThinkPad T Series: T450 and T550 Broadwell-processor configurations documented for one 16GB DDR3L module

Part-Number-Specific Application

✔️ iMac Retina 5K 27-Inch: Late 2015 iMac17,1 when the supplied module is specifically identified as OWC1600DDR3S16G

The OWC application is tied to that system-specific module reference. It should not be used to assume that every generic PC3L-12800S module has been qualified for the same system.

☑️ Key Features

☑️ Full 16GB capacity in one SO-DIMM
☑️ DDR3L-1600 operation at up to 1600 MT/s
☑️ PC3L-12800S bandwidth rating
☑️ Low-voltage 1.35V design
☑️ CL11 latency
☑️ Dual-rank 2Rx8 organization
☑️ Non-ECC unbuffered architecture
☑️ Standard 204-pin laptop SO-DIMM form factor
☑️ Suitable for systems requiring 16GB-per-slot memory
☑️ Cross-referenced to multiple OEM and module-manufacturer numbers
☑️ SPD support for automatic memory configuration
☑️ May downclock when supported by the host platform and module SPD

⚙️ Fit Notes

• Confirm that the system supports 16GB per memory socket, not merely 16GB total system memory.
• Confirm the processor generation because memory-density support can change within otherwise similar model families.
• For 4X70J32868 applications, Haswell-processor configurations are specifically excluded by the option documentation.
• The ThinkPad X240 and Haswell-generation T440-family systems should not be treated as compatible solely because they use DDR3L-1600 memory.
• The ThinkPad X260 uses DDR4 memory and is not compatible with this DDR3L module.
• A system requiring two 8GB modules to reach 16GB cannot use this single module as a direct equivalent.
• Match the 204-pin SO-DIMM form factor, 1.35V voltage, non-ECC architecture, unbuffered design, and 2Rx8 organization.
• Do not substitute an ECC SO-DIMM unless the system expressly requires ECC memory.
• When mixing memory, match capacity, voltage, speed, rank, and organization whenever possible.
• Mixed modules may operate at the speed of the slowest installed module.
• Update the system BIOS before installation when recommended by the computer manufacturer.
• Disconnect external power and the internal battery before installing or removing memory.
• Use appropriate electrostatic-discharge precautions when handling the module.
• After installation, confirm the detected capacity in the BIOS and run a complete memory diagnostic.