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Computer Memory Solutions

Computer Memory Solutions CM5126412800SOSRL 4GB DDR3L 1600MHz SODIMM ThinkPad Edge E520 L330 L421 U31

SKU CH-SYAJ-4Q359

A 4 GB DDR3L SODIMM running at 1600 MHz with CL11 timing and 1.35 V for ThinkPad Edge E520, L330, L421 and U31 models

  • Total capacity4 GB
  • Rated speedDDR3L 1600 (PC3L 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Memory timings11-11-11
  • Rated voltage1.35 V
  • 4GB DDR3L upgrade for ThinkPad Edge E520, L330, L421, U31
  • 1600MHz DDR3L speed with CL11 timing for responsive multitasking
  • Low 1.35V DDR3L voltage reduces power draw and heat
  • 204-pin SODIMM fits single or dual slot configurations
  • Major-brand chipset ensures reliable compatibility with listed models

Compatible DDR3L SODIMM for ThinkPad Edge

This 4GB DDR3L SODIMM runs at 1600MHz with CL11 timings and 1.35V operation. The 204-pin unbuffered module uses a 1Rx8 configuration without ECC. It is built with major brand chipsets and carries a limited lifetime warranty from Computer Memory Solutions.

Suits single-slot upgrades on listed ThinkPad models

Owners of ThinkPad Edge E520, Edge L330, L421 or U31 series notebooks can install this stick to reach the 8GB maximum memory. Buyers who need more than 8GB total capacity or a dual-rank module should look elsewhere. The single-piece kit fits systems with one or two SODIMM sockets.

Key spec: DDR3L 1600 (PC3L 12800) voltage and speed

This module operates at 1.35V, matching the DDR3L standard required by the compatible ThinkPad platforms. A 1.5V DDR3 part would exceed the voltage spec and may not function. Verify the slot accepts DDR3L before ordering.

How it compares

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

Price $19.99
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 $5.00 per GB
Cheaper than about 77% 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 nameCM5126412800SOSRL
Total capacity4 GB
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3L 1600 (PC3L 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
Memory timings11-11-11
ECC supportNo
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Compatible systemsLenovo ThinkPad Edge E520, ThinkPad Edge L330, ThinkPad L421, U31 Series
In the box
Included items1Memory Ram Stick

Questions about this item

How can I confirm the 4 GB DDR3L 1600 MHz SODIMM is running at 1.35 V and CL11 after installation?

Open the BIOS or a tool such as CPU-Z and verify the memory voltage reads 1.35 V, the speed shows 1600 MHz (PC3L-12800), and the timings report 11-11-11.

What ships in the box and what must I source separately for my ThinkPad Edge E520?

The package contains one 204-pin DDR3L SODIMM module; no screws, tools, or additional memory sticks are included.

Should I choose the single 4 GB stick or add a second to reach the 8 GB maximum on my L330?

The system supports up to 8 GB across one or two sockets, so a second identical 4 GB module is required to reach the maximum capacity.

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