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Green 204-pin DDR3 SODIMM module with black chips, no heat spreader

Computer Memory Solutions

Computer Memory Solutions 8GB DDR3 1333MHz SODIMM Lenovo Thinkpad T420 4177 4178 4180 4236

SKU CH-0RMV-RNF6N

An 8 GB DDR3 SODIMM running at 1333 MHz with CL9 timing for compatible ThinkPad T420 models

  • Total capacity8 GB
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL9
  • Memory timings9-9-9
  • Rated voltage1.5 V
  • 8GB capacity doubles the T420 to its 16GB maximum
  • 1333MHz DDR3 speed matches the PC3-10600 factory specification
  • CL9 9-9-9 timing keeps latency low for responsive multitasking
  • 5V unbuffered non-ECC design drops straight into both SODIMM slots
  • 204-pin SODIMM form factor fits ThinkPad T420 4177 4178 4180 4236 models

Compatible ThinkPad T420 SODIMM

This 8 GB DDR3 1333 MHz module is built for Lenovo ThinkPad T420 models 4177, 4178, 4180 and 4236. It installs in a 204-pin SO-DIMM slot and runs at 1.5 V with CL9 timing. The single stick adds 8 GB to one of the two available sockets.

Suits single-slot upgrades, not dual-channel seekers

Owners wanting to populate one empty slot or replace a failed stick will find the correct fit. Builders aiming for matched-pair dual-channel performance or a full 16 GB maximum should source two identical modules. Systems requiring ECC or registered memory cannot use this unbuffered non-ECC part.

8 GB DDR3 1333 MHz CL9 1.5 V SODIMM

The decisive specification is the 8 GB DDR3 1333 MHz CL9 1.5 V SO-DIMM form factor. Only laptops that accept this exact speed, voltage, latency and pin count will recognise the module.

How it compares

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

Price $20.99
Cheaper than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $2.62 per GB
Cheaper than about 91% 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 nameCM10246410600SODRH
Total capacity8 GB
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1333 (PC3 10600)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL9
Memory timings9-9-9
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsLenovo Thinkpad T420 4177, 4178, 4180, 4236 Series
In the box
Included items1 Memory RAM Stick

Questions about this item

What is the maximum memory capacity the ThinkPad T420 can support with this 8GB DDR3-1333 module installed?

The ThinkPad T420 supports a maximum of 16GB across its two SODIMM sockets, so this 8GB module leaves room for one more 8GB stick to reach the limit.

How much heat or noise does this 1.5V DDR3 SODIMM add when the laptop runs all day?

This unbuffered 1.5V module has no heat spreader and draws minimal power, adding negligible heat and zero noise during sustained daily operation.

Which slot type must the ThinkPad T420 have for this 204-pin DDR3 SODIMM to fit?

The laptop must provide a standard DDR3 204-pin SODIMM slot, which the T420 series uses for its two memory sockets.

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