We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green circuit board SO-DIMM stick with black memory chips and gold edge contacts

Computer Memory Solutions

Computer Memory Solutions 4GB DDR3 1333 SO-DIMM CL7 1.5V 2Rx8 ThinkPad T520

SKU CH-TMM4-JE2E3

4GB DDR3 1333 SO-DIMM CL7 module for Lenovo ThinkPad T520 models 4239, 4240, 4241, 4242, 4243

  • Total capacity4 GB
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 4GB capacity expands ThinkPad T520 memory for smoother multitasking
  • DDR3 1333 speed matches factory spec for reliable operation
  • CL7 latency delivers responsive data access in supported systems
  • 2Rx8 dual-rank organisation maximises density on a single module
  • 5V standard voltage ensures compatibility with original power design

4 GB DDR3 SO-DIMM for ThinkPad T520

This 4 GB DDR3 1333 MHz SO-DIMM is built specifically for the Lenovo ThinkPad T520 models 4239, 4240, 4241, 4242 and 4243. It arrives as a single 204-pin unbuffered module rated at 1.5 V with CL7 timing. The kit adds one stick to the two available slots, helping the system reach its 8 GB maximum.

Ideal for owners upgrading a compatible ThinkPad

The module suits anyone restoring or expanding memory in the listed T520 variants where DDR3 SO-DIMM is required. It is not for laptops that only accept newer DDR generations, for desktops requiring full-size DIMMs, or for systems that mandate ECC or registered memory.

DDR3 1333 CL7 1.5 V specification

The decisive figure is the DDR3 1333 (PC3 10600) speed with CL7 latency at 1.5 V. Matching this exact speed, voltage and timing ensures the module will be recognised and run stably in the supported ThinkPad T520 models.

How it compares

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

Price $18.99
Cheaper than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $4.75 per GB
Cheaper than about 80% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM5126410600SODRH
Total capacity4 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 T520 4239; 4240, 4241, 4242, 4243
In the box
Included items1 Memory RAM Stick

Questions about this item

My ThinkPad T520 has two SO-DIMM slots — will this 4 GB module leave the second slot free for another stick?

Yes, the T520 provides two 204-pin slots and the system maximum is 8 GB, so adding this 4 GB module leaves one slot open for a second 4 GB stick.

If I keep my existing PC3-10600 DDR3-1333 module, will this CL7 1.5 V stick run at the same speed without manual timing changes?

The module is rated DDR3-1333 CL7 at 1.5 V; when paired with a CL9 1333 MHz stick the system will default to the slower CL9 timing at 1333 MHz automatically.

After installation, how can I confirm the new memory is recognised at 1333 MHz with the correct 2Rx8 organisation?

Open Task Manager or run CPU-Z — the memory tab should show 4 GB, DDR3, 1333 MHz, dual-rank (2Rx8) and 1.5 V operation.

More in Model-Specific Memory Upgrades

Similar items