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Green circuit board with black memory chips and gold edge connector

Computer Memory Solutions

Computer Memory Solutions CM1024642400SO 8GB DDR4 2400 CL17 1.2V SODIMM

SKU CH-SX3S-H29RQ

8 GB DDR4 2400 CL17 1.2 V SODIMM for HP ProBook 470 G3, 470 G4, 640 G2 and 645 G3

  • Total capacity8 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL17
  • Memory timings17-17-17
  • Rated voltage1.2 V
  • 8 GB capacity expands multitasking headroom for ProBook workloads
  • DDR4 2400 speed matches factory spec for 470 G3 and G4
  • CL17 latency at 1.2 V keeps power draw low in thin chassis
  • 260-pin SODIMM form factor fits 640 G2 and 645 G3 slots directly
  • Single 8 GB module leaves second slot free for future 16 GB max

Targeted DDR4 SODIMM Upgrade

This 8 GB DDR4 2400 MHz SODIMM is built for HP and Compaq ProBook 470 G3, 470 G4, 640 G2 and 645 G3 notebooks. It delivers a direct memory increase for users whose workloads exceed the factory configuration.

Replacing Slower or Smaller Modules

The module upgrades from lower-speed DDR4 or 4 GB and 8 GB sticks that limit multitasking. The jump is worth it when the system shows high memory pressure during typical business applications.

Fits Two-Slot ProBook Chassis

The 260-pin unbuffered non-ECC stick occupies one of two SODIMM slots and runs at 1.2 V without a heat spreader. It leaves the second slot free for a matching module to reach the 16 GB platform maximum.

How it compares

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

Price $39.99
Cheaper than about 80% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $5.00 per GB
Cheaper than about 77% 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 nameCM1024642400SO
Total capacity8 GB
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL17
Memory timings17-17-17
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsHP/Compaq ProBook 470 G3470 G4, 640 G2, 645 G3
In the box
Included items1Memory Ram Stick

Questions about this item

Will the 260-pin DDR4 SO-DIMM fit the memory slot in an HP ProBook 470 G4?

Yes, this 260-pin DDR4 SO-DIMM is listed as compatible with the HP ProBook 470 G4 and other ProBook models including the 470 G3, 640 G2 and 645 G3.

What is the correct way to seat this SODIMM so it does not appear loose after installation?

Insert the module at an angle into the 260-pin slot until the gold contacts are fully hidden, then press down evenly until the retention clips on both sides snap into the notches on the PCB.

Will this 8 GB DDR4 2400 CL17 module need any firmware updates or pairing to keep working in a ProBook 640 G2?

No firmware or pairing is required; the module is unbuffered non-ECC DDR4 that operates at 1.2 V with standard JEDEC timings, so it runs without software maintenance for the life of the laptop.

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