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Two green 204-pin DDR3 SO-DIMM sticks without heat spreaders

Computer Memory Solutions

Computer Memory Solutions CM5126410600SODRH 8GB (2x4GB) DDR3 1333MHz CL7 1.5V 2Rx8 SODIMM memory upgrade

SKU CH-E1A7-YP703

8GB dual-channel DDR3 SODIMM kit at 1333MHz CL7 for Lenovo ThinkPad L412, L420, L512 and L520 laptops

  • Capacity8GB (2 x 4GB)
  • Type204-Pin DDR3 SO-DIMM
  • SpeedDDR3 1333 (PC3 10600)
  • CAS LatencyCL7
  • Timing7-7-7
  • Voltage1.5V
  • 8GB dual-channel kit doubles capacity for ThinkPad L412 L420 L512 L520
  • CL7 timing at 1333 MHz cuts latency for snappier response
  • 5 V DDR3 SO-DIMM matches factory voltage for drop-in install
  • 2Rx8 unbuffered design works with standard laptop memory controllers
  • Major-brand chips backed by CMS lifetime warranty ensure long-term reliability

ThinkPad L-Series DDR3 kit

This 8 GB kit contains two 4 GB DDR3 SODIMM modules rated at 1333 MHz with CL7 timings. It is built for Lenovo ThinkPad L412, L420, L512 and L520 notebooks that accept 204-pin unbuffered memory at 1.5 V.

Fits two SO-DIMM slots

Each stick uses a 2Rx8 organisation and major-brand chips without a heat spreader. The non-ECC, unbuffered design drops straight into the two memory sockets of the compatible ThinkPad models, leaving no extra cabling or power connections to manage.

Two matched sticks in the box

The package supplies a pair of 4 GB modules so the laptop can run in dual-channel mode. No software, drivers or additional accessories are included beyond the memory sticks themselves.

Highlights

  • 8GB dual-channel kit doubles capacity for ThinkPad L412 L420 L512 L520
  • CL7 timing at 1333 MHz cuts latency for snappier response
  • 5 V DDR3 SO-DIMM matches factory voltage for drop-in install
  • 2Rx8 unbuffered design works with standard laptop memory controllers
  • Major-brand chips backed by CMS lifetime warranty ensure long-term reliability

Specifications

BrandComputer Memory Solutions
ModelCM5126410600SODRH
Capacity8GB (2 x 4GB)
Type204-Pin DDR3 SO-DIMM
SpeedDDR3 1333 (PC3 10600)
CAS LatencyCL7
Timing7-7-7
Voltage1.5V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemLenovo Thinkpad L412, L420, L512, L520
Package Content2 Memory RAM Sticks

Questions about this item

Will the 1.5V voltage of these DDR3 modules increase heat or fan noise during all-day use?

The modules run at the standard 1.5V for DDR3 1333MHz without a heat spreader, so thermal output matches typical SO-DIMM behaviour in the ThinkPad L412, L420, L512 and L520.

Do the ThinkPad L412, L420, L512 or L520 need a specific BIOS version or firmware update before installing this 2Rx8 kit?

Computer Memory Solutions guarantees compatibility with the listed ThinkPad models as shipped; no separate firmware step is mentioned for these 204-pin DDR3 1333MHz CL7 modules.

My L520 currently has a single 4GB stick — can I add just one 4GB module from this pair?

The kit contains two 4GB 2Rx8 SO-DIMMs; you can install one module alongside your existing stick provided the slot supports 2Rx8 density and the system accepts mixed-rank configurations.

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