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Two green circuit boards with black memory chips and gold edge connectors

Computer Memory Solutions

Computer Memory Solutions CM256648500SODRH 4GB (2x2GB) DDR3 1066 CL7 SODIMM

SKU CH-GWVY-6M2BG

Two 2 GB DDR3-1066 CL7 SO-DIMM modules totalling 4 GB for Toshiba Satellite C655-S50521

  • Total capacity4 GB (2 × 2 GB)
  • Rated speedDDR3 1066 (PC3 8500)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 4 GB total capacity from a 2 x 2 GB kit
  • DDR3 1066 MHz speed rated at PC3 8500
  • Low CL7 latency with 7-7-7 timing
  • 204-pin SO-DIMM form factor for compatible laptops
  • Tested for Toshiba Satellite C655-S50521 and PSC08U-03C01L

Capacity and Compatibility

This kit provides 4 GB of total memory using two 2 GB DDR3 1066 SO-DIMM modules. It is built for the Toshiba Satellite C655-S50521 and PSC08U-03C01L notebooks. The 204-pin form factor matches the sockets in those specific models.

Kit Contents and Operation

The package contains two matched sticks so the system can run in dual-channel mode when both slots are populated. CL7 timing at 1.5 V lets the memory operate at the notebook's native speed without manual configuration. No heat spreader is fitted, keeping the profile low for tight chassis clearance.

Build and Installation

Unbuffered, non-ECC construction with major-brand chips follows the standard JEDEC layout for reliable seat-and-click insertion. The 2 Rx8 organisation is transparent to the platform and requires no BIOS adjustment. Buyers needing more than 4 GB or a different DDR generation cannot use this kit.

How it compares

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

Price $10.99
Cheaper than about 96% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB (2 × 2 GB)
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $2.75 per GB
Cheaper than about 91% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM256648500SODRH
Total capacity4 GB (2 × 2 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1066 (PC3 8500)
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 systemsToshiba Satellite C655-S50521, Psc08U-03C01L
In the box
Included items2 Memory RAM Sticks

Questions about this item

Will the 2Rx8 204-pin SODIMM modules need any firmware updates or reconfiguration after installation?

No firmware updates are required; the unbuffered non-ECC sticks install directly into the compatible Toshiba Satellite C655-S50521 and are recognised by the system BIOS automatically.

What is the first limit reached when the 1066 MHz CL7 memory runs continuously at full load?

The CL7 timing at 1.5 V sets the latency boundary; sustained throughput is capped by the DDR3 1066 data rate rather than thermal or power headroom.

How much heat and power do the two 2 GB sticks produce during all-day operation?

Each module runs at the standard DDR3 1.5 V without a heat spreader, so total power draw stays low and the sticks remain cool under continuous use.

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