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Two green DDR3 SODIMM sticks with black chips no heat spreader

Computer Memory Solutions

Computer Memory Solutions 8GB (2x4GB) DDR3 1333MHz SODIMM for Lenovo ThinkPad T520i 4239-xxx

SKU CH-VWF1-CPT59

A matched pair of 4 GB DDR3 1333 MHz SODIMMs built for the Lenovo ThinkPad T520i 4239-xxx

  • Capacity8GB (2 x 4GB)
  • Type204-Pin DDR3 SO-DIMM
  • SpeedDDR3 1333 (PC3 10600)
  • CAS LatencyCL7
  • Timing7-7-7
  • Voltage1.5V
  • 8GB dual-channel kit expands ThinkPad T520i memory capacity
  • DDR3 1333 MHz CL7 timing delivers responsive system performance
  • 5V unbuffered SODIMM modules install without configuration changes
  • 204-pin form factor matches factory memory slots exactly
  • Computer Memory Solutions lifetime warranty backs long-term reliability

DDR3 1333 SODIMM kit for ThinkPad T520i

This 8 GB kit contains two 4 GB unbuffered DDR3 SO-DIMM modules rated at 1333 MHz with CL7 timing. It runs at the standard 1.5 V and uses 204-pin connectors. The kit is built specifically for the Lenovo ThinkPad T520i 4239-xxx series.

Suitable for owners of that model who need

Buyers whose laptop has only one memory slot cannot use both sticks. Machines that require ECC or registered memory are not compatible. Systems limited to 4 GB maximum capacity will not recognise the full kit.

1333 MHz DDR3 speed with CL7 latency

The modules operate at PC3-10600 (1333 MHz) with 7-7-7 timings at 1.5 V. This speed and latency combination determines whether the memory matches the ThinkPad's memory controller requirements.

Highlights

  • 8GB dual-channel kit expands ThinkPad T520i memory capacity
  • DDR3 1333 MHz CL7 timing delivers responsive system performance
  • 5V unbuffered SODIMM modules install without configuration changes
  • 204-pin form factor matches factory memory slots exactly
  • Computer Memory Solutions lifetime warranty backs long-term reliability

Specifications

BrandComputer Memory Solutions
ModelCM5126410600SODRH
Capacity8GB (2 x 4GB)
Type204-Pin DDR3 SO-DIMM
SpeedDDR3 1333 (PC3 10600)
CAS LatencyCL7
Timing7-7-7
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

Do I need two free 204-pin SO-DIMM slots to install this 8GB kit?

Yes, the kit contains two 4GB modules and the ThinkPad T520i 4239-xxx has two slots, so both must be free for the full 8GB upgrade.

Will these CL7 DDR3-1333 modules run correctly if the laptop originally shipped with CL9 memory?

The system will automatically use the slower CL9 timing, so the new modules work without any manual adjustment.

How can I confirm the full 8GB is recognised after fitting both sticks?

Open Task Manager or System Information in Windows and verify the installed memory reads 8GB at 1333 MHz.

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