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Two green DDR3 SODIMM modules with black chips, no heat spreader

Computer Memory Solutions

Computer Memory Solutions 8GB (2x4GB) DDR3 1333MHz CL7 SODIMM memory upgrade - A29

SKU CH-HXNM-5M15Z

8GB DDR3 1333MHz CL7 SODIMM kit for HP ProBook 4411S, 4420S, 4421S, 4430S, 4431S

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 8 GB kit expands multitasking headroom for compatible HP ProBook models
  • CL7 latency at 1333 MHz delivers responsive DDR3 performance
  • 204-pin SO-DIMM form factor fits factory memory slots directly
  • 5 V unbuffered modules install without configuration changes
  • Two 4 GB sticks enable dual-channel operation on supported platforms

Compatible ProBook DDR3 SO-DIMM kit

This 8 GB kit contains two 4 GB DDR3 1333 MHz SO-DIMM modules rated at CL7 7-7-7 timing and 1.5 V. The 204-pin unbuffered non-ECC sticks use major-brand chips and are validated for HP/Compaq ProBook 4411S, 4420S, 4421S, 4430S and 4431S notebooks.

Who should buy this and who should not

Owners of the listed ProBook models wanting a matched pair to fill both memory sockets will gain the full 8 GB capacity under a 64-bit operating system. Buyers with DDR2-only ProBook variants, systems limited to a single SO-DIMM slot, or laptops requiring registered or ECC memory cannot use this kit.

Deciding specification — DDR3 1333 CL7 204-pin

The modules run at DDR3 1333 (PC3-10600) with CAS latency 7 and 204-pin SO-DIMM form factor; this exact combination of speed, latency, voltage and pin count determines whether the laptop will recognise and stabilise the upgrade.

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 systemsHp/Compaq Probook 4411S, 4420S, 4421S, 4430S, 4431S
In the box
Included items2 Memory RAM Sticks

Questions about this item

Will the 204-pin SODIMM modules fit the memory slots on my HP ProBook 4430s?

Yes, the 204-pin DDR3 SODIMM form factor matches the slots used in the compatible ProBook models listed.

What is the correct way to seat both 4GB sticks so the system recognises the full 8GB?

Insert each module at a 30-degree angle until the gold contacts disappear, then press down firmly until both side clips click into place.

Will I need to replace these modules if I move to a 64-bit operating system later?

No, the 8GB kit already supports the maximum 8GB addressable by a 64-bit OS on these two-slot ProBook models.

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