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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

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 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.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $40.99
Cheaper than about 80% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB (2 × 4 GB)
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $5.12 per GB
Cheaper than about 75% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM5126410600SODRH
Total capacity8 GB (2 × 4 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1333 (PC3 10600)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL7
Memory timings7-7-7
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsLenovo Thinkpad T520I 4239-Xxx
In the box
Included items2 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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