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

Computer Memory Solutions

Computer Memory Solutions CM5126410600SODRH 8GB 2x4GB DDR3 1333 CL7 1.5V

SKU CH-GXGV-AAHWN

8 GB DDR3 SO-DIMM kit for Sony Vaio VPCZ137GX/B, VPCZ138GG/XQ, VPCZ1390X, CL7 1.5 V

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 8GB dual-channel kit upgrades Sony Vaio VPCZ137GX/B, VPCZ138GG/XQ, VPCZ1390X
  • CL7 7-7-7 timing delivers responsive DDR3-1333 performance at 1.5V
  • 204-pin SODIMM form factor fits factory memory slots without modification
  • 2Rx8 unbuffered modules install in matched pairs for stable dual-channel operation
  • Computer Memory Solutions validates compatibility for listed Vaio models

Sony Vaio DDR3 1333 MHz SO-DIMM Kit

This 8 GB kit contains two 4 GB DDR3 1333 MHz SO-DIMM modules built to PC3-10600 specification. They run at CL7 7-7-7 timings and 1.5 V, are unbuffered and non-ECC, and use a 204-pin form factor. The kit is validated for Sony Vaio VPCZ137GX/B, VPCZ138GG/XQ and VPCZ1390X notebooks.

Suited for owners of the listed Vaio models

Buyers upgrading one of the three named Sony Vaio models can install this matched pair to reach the platform's 8 GB maximum in dual-channel mode. The modules are not compatible with systems that require ECC, registered memory, or a different DDR generation, and they will not fit desktop DIMM slots.

1333 MHz CL7 DDR3 specification

The decisive figure is the DDR3 1333 MHz (PC3-10600) speed with CL7 latency, which matches the memory controller settings of the supported Vaio models. Installing modules at a different speed or latency may prevent the system from booting or force it to run at reduced performance.

How it compares

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

Price $35.99
Cheaper than about 82% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB (2 × 4 GB)
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $4.50 per GB
Cheaper than about 81% 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 nameCM5126410600SODRH
Total capacity8 GB (2 × 4 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1333 (PC3 10600)
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 systemsSony Vaio Vpcz137Gx/B, Vpcz138Gg/Xq, Vpcz1390X
In the box
Included items2 Memory RAM Sticks

Questions about this item

Should I choose the 2x4GB kit or a single 8GB stick for my Sony Vaio VPCZ137GX/B?

The 2x4GB kit is required because the system has two sockets and modules must be installed in pairs for dual-channel mode, as specified for the VPCZ137GX/B, VPCZ138GG/XQ and VPCZ1390X models.

What does the DDR3-1333 CL7 rating deliver in actual use on this laptop?

The CL7 timing at 1333 MHz gives lower latency than standard CL9 modules, improving responsiveness in memory-bound tasks while running at the standard 1.5 V DDR3 voltage for the supported Sony Vaio models.

Does the 204-pin SO-DIMM interface limit the speed to PC3-10600 on these Vaio models?

Yes, the 204-pin DDR3 SO-DIMM form factor and the system's memory controller cap the transfer rate at PC3-10600 (1333 MHz), so faster DDR3 modules would simply downclock to this speed.

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