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Green circuit board with black memory chips and gold edge connector

Computer Memory Solutions

Computer Memory Solutions CM5126412800SODRH 4GB DDR3 1600 CL11 SODIMM memory upgrade

SKU CH-BXTS-Z8AYC

4GB DDR3 1600 CL11 SODIMM module for Toshiba Satellite S55-A series laptops

  • Total capacity4 GB
  • Rated speedDDR3 1600 (PC3 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Memory timings11-11-11
  • Rated voltage1.5 V
  • 4GB capacity expands system memory for multitasking
  • DDR3 1600MHz speed delivers responsive data transfer
  • CL11 latency supports efficient command processing
  • 204-pin SODIMM form factor fits compatible laptop slots
  • Validated for Toshiba Satellite S55-A5279, S55-A5294, S55-A5295

Targeted upgrade for three Toshiba Satellite models

This 4 GB DDR3 SODIMM module is built for the Satellite S55-A5279, S55-A5294 and S55-A5295. It supplies a single 204-pin stick rated at 1600 MHz with CL11 timing. Buyers needing more than 4 GB per slot or a dual-channel kit should look elsewhere.

DDR3 1600 ceiling and two-slot maximum

The platform accepts DDR3 1600 (PC3 12800) memory up to a total of 16 GB across two sockets. Speed is fixed at 1600 MHz; faster DDR3 modules will downclock to this rate. ECC and registered DIMMs are not supported by the chipset.

Straightforward slot access with one caution

Installation requires opening the memory compartment and inserting the unbuffered 1.5 V stick until the clips engage. The 2Rx8 rank layout is standard for these laptops. The only common issue is seating the module fully before locking the clips.

How it compares

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

Price $9.99
Cheaper than about 97% 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 $2.50 per GB
Cheaper than about 92% 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 nameCM5126412800SODRH
Total capacity4 GB
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1600 (PC3 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
Memory timings11-11-11
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsToshiba Satellite S55-A5279, S55-A5294, S55-A5295
In the box
Included items1 Memory RAM Stick

Questions about this item

Should I choose the 4 GB single stick or add a second module for the 16 GB maximum?

The laptop supports two SODIMM sockets and up to 16 GB total, so adding a second 4 GB stick gives 8 GB; two 8 GB modules would reach the 16 GB limit.

What does the 1600 MHz speed deliver in daily use?

At DDR3 1600 with CL11 timing the module runs at the native bus speed of the Satellite S55-A5279, S55-A5294 and S55-A5295, providing standard throughput for everyday tasks.

Does the 204-pin DDR3 SO-DIMM interface limit the upgrade?

The 204-pin DDR3 SO-DIMM form factor matches the two memory sockets in the compatible Toshiba models, so the module fits without adapter or voltage change.

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