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

OWC

OWC 4GB DDR3L 1600 CL11 1.35V SODIMM for ThinkPad T440p T440s T450 T450s T460 T540p T550 memory upgrade

SKU CH-WXXZ-Q8E7C

4GB DDR3L 1600 SODIMM upgrades compatible ThinkPad T440p, T440s, T450, T450s, T460, T540p and T550 laptops

  • Capacity4GB
  • Type204-Pin DDR3L Non-ECC SODIMM
  • SpeedDDR3L 1600 (PC3L 12800)
  • CAS LatencyCL11
  • Voltage1.35V
  • ECCNo
  • Boosts system responsiveness with 4GB DDR3L 1600 CL11 module
  • Runs cooler at 1.35V low-voltage DDR3L standard
  • Fits ThinkPad T440p, T440s, T450, T450s, T460, T540p, T550
  • JEDEC and RoHS compliant for warranty-safe upgrade
  • Simple DIY install with 204-pin SODIMM form factor

OWC 4GB DDR3L 1600 SODIMM

This 4GB DDR3L SODIMM runs at 1600 MT/s with CL11 latency and 1.35V operation. It uses a 204-pin unbuffered non-ECC layout built to JEDEC and RoHS standards. The single-rank 1Rx8 module targets compatible Lenovo ThinkPad notebooks.

Compatible ThinkPad models

The upgrade fits ThinkPad T440p, T440s, T450, T450s, T460, T540p and T550 systems. Buyers with other laptop families or desktop platforms should look elsewhere. Systems requiring ECC, registered DIMMs or a different voltage are not supported.

Speed and voltage spec

DDR3L 1600 (PC3L-12800) at 1.35V is the decisive specification for this part. Confirm your notebook accepts this exact speed and voltage before ordering. Mismatched memory will not function correctly.

Highlights

  • Boosts system responsiveness with 4GB DDR3L 1600 CL11 module
  • Runs cooler at 1.35V low-voltage DDR3L standard
  • Fits ThinkPad T440p, T440s, T450, T450s, T460, T540p, T550
  • JEDEC and RoHS compliant for warranty-safe upgrade
  • 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 SystemLenovo ThinkPad T440p
Lenovo ThinkPad T440s
Lenovo ThinkPad T450
Lenovo ThinkPad T450s
Lenovo ThinkPad T460

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Does my ThinkPad T450s need a free 204-pin SODIMM slot for this 4GB DDR3L 1600 module?

Yes, the module fits one 204-pin DDR3L SODIMM slot, so an empty slot is required for installation.

Can I keep my existing 1.35V DDR3L 1600 CL11 stick and add this 1Rx8 module alongside it?

The module matches the 1.35V DDR3L 1600 CL11 spec, so it will run at the same speed and timings as an identical stick.

How do I confirm the new 4GB module is recognised at 1600 MT/s after I install it?

Check the memory speed in Task Manager or BIOS; it should show 1600 MT/s for the added module.

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