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Two green DDR3 SODIMM sticks with black chips, no heat spreader

Computer Memory Solutions

Computer Memory Solutions 16GB (2x8GB) DDR3 1333MHz SODIMM ThinkPad T420 memory upgrade

SKU CH-QHCD-VR44J

16 GB kit of two 8 GB DDR3 1333 MHz SODIMM modules for upgrading a Lenovo ThinkPad T420

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL9
  • Memory timings9-9-9
  • Rated voltage1.5 V
  • 16 GB total capacity for multitasking headroom
  • DDR3 1333 MHz speed matches T420 specifications
  • CL9 latency supports responsive system operation
  • 204-pin SODIMM form factor fits both memory slots
  • Guaranteed compatible with ThinkPad T420 4177 4178 4180 4236 series

System-specific DDR3 SODIMM kit

This 16 GB kit contains two 8 GB DDR3-1333 SODIMM modules built for the Lenovo ThinkPad T420 series. It targets owners of the 4177, 4178, 4180 or 4236 models who want to reach the platform maximum of 16 GB.

DDR3-1333 bandwidth ceiling

The DDR3-1333 (PC3-10600) interface caps memory throughput at the speed these modules deliver. Builders needing higher bandwidth must choose a laptop platform that supports a faster memory standard.

Two-slot maximum capacity

The T420 provides only two SODIMM sockets, so this 2 x 8 GB kit fills every slot to hit the 16 GB limit. Buyers who want more memory capacity cannot add modules beyond this configuration.

How it compares

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

Price $44.99
Cheaper than about 79% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (2 × 8 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $2.81 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 capacity16 GB (2 × 8 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 items2 Memory RAM Sticks

Questions about this item

Should I choose the 2x8GB kit or a single 16GB module for my ThinkPad T420?

The T420 has two memory sockets and a 16GB maximum, so the 2x8GB kit fills both slots for dual-channel operation and reaches the system limit.

What does the 1333MHz rating mean once installed in a ThinkPad T420?

The modules run at DDR3-1333 (PC3-10600) with CL9 timing at 1.5V, matching the T420's native memory controller speed.

Will the 204-pin DDR3 SO-DIMM interface work in my T420 4177, 4178, 4180 or 4236 series?

Yes, these sticks are 204-pin DDR3 SO-DIMMs, the exact form factor and generation required by those ThinkPad T420 models.

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