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Two green DDR3 SODIMM sticks with black chips side by side

Computer Memory Solutions

Computer Memory Solutions CM10246410600SODRH 16GB (2x8GB) DDR3 1333 CL9 1.5V 204-pin SODIMM memory upgrade

SKU CH-XFW9-6KK72

16 GB dual-channel DDR3-1333 CL9 SODIMM kit for Lenovo ThinkPad T520i 4239-xxx systems

  • Capacity16GB (2 x 8GB)
  • Type204-Pin DDR3 SO-DIMM
  • SpeedDDR3 1333 (PC3 10600)
  • CAS LatencyCL9
  • Timing9-9-9
  • Voltage1.5V
  • 16 GB dual-channel kit boosts multitasking headroom
  • 1333 MHz DDR3 speed matches system specification
  • CL9 9-9-9 timings deliver responsive data access
  • 5 V standard voltage ensures broad compatibility
  • 204-pin SODIMM form factor fits Lenovo ThinkPad T520i

Compatible ThinkPad T520i upgrade kit

This 16GB kit contains two 8GB DDR3 SO-DIMM modules built for the Lenovo ThinkPad T520i 4239 series. Each stick runs at 1333 MHz with CL9 timing at 1.5V and fits the 204-pin slot. The package delivers the maximum memory the system accepts.

Suits owners filling both slots.

The kit provides the full 16GB capacity across two modules, matching the two sockets listed for the T520i. Users who only need one 8GB stick should look for a single-module option instead. Non-ECC unbuffered design matches the laptop's requirements.

204-pin DDR3 1333 CL9 1.5V specification

The decisive spec is the 204-pin DDR3 interface running at 1333 MHz with CL9 latency at 1.5V. This exact combination ensures the modules seat correctly and operate at the rated speed in the supported ThinkPad model.

Highlights

  • 16 GB dual-channel kit boosts multitasking headroom
  • 1333 MHz DDR3 speed matches system specification
  • CL9 9-9-9 timings deliver responsive data access
  • 5 V standard voltage ensures broad compatibility
  • 204-pin SODIMM form factor fits Lenovo ThinkPad T520i

Specifications

BrandComputer Memory Solutions
ModelCM10246410600SODRH
Capacity16GB (2 x 8GB)
Type204-Pin DDR3 SO-DIMM
SpeedDDR3 1333 (PC3 10600)
CAS LatencyCL9
Timing9-9-9
Voltage1.5V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemLenovo Thinkpad T520I 4239-Xxx
Package Content2 Memory RAM Sticks

Questions about this item

Does my Lenovo ThinkPad T520i 4239 need both SODIMM slots free to install this 16 GB kit?

The kit contains two 8 GB modules and the T520i 4239 has two sockets with a 16 GB maximum, so both slots will be occupied after installation.

Can I keep one existing 8 GB DDR3 1333 stick and add just one module from this kit?

Each module is 8 GB 2Rx8 CL9 at 1.5 V; mixing ranks or timings can cause instability, so replacing both sticks with the matched pair is recommended.

How do I confirm the memory is running at DDR3 1333 CL9 after fitting the modules?

Check the system BIOS or a tool such as CPU-Z; it should report 1333 MHz, 9-9-9 timings and 1.5 V for both 8 GB sticks.

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