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Green rectangular circuit board with black memory chips and gold edge connector

Total Micro Technologies

Total Micro Technologies Z4Y85AA#ABA-TM 8GB DDR4 2400MHz laptop RAM

SKU CH-CHZC-7GKTD MPN Z4Y85AA#ABA-TM

8 GB DDR4 laptop memory running at 2400 MHz for compatible HP EliteBook and ProBook models

  • 8 GB capacity handles multitasking smoothly
  • 2400 MHz DDR4 speed keeps data flowing
  • 2 V operation reduces power draw
  • Compatible with HP EliteBook and ProBook G4 models

8 GB DDR4 module for listed HP notebooks

This Total Micro Technologies SO-DIMM delivers 8 GB of DDR4 memory at 2400 MHz. It is an unbuffered, non-ECC module that operates at 1.2 V and uses a 260-pin connector. The part is validated for the HP EliteBook 725 G4, 745 G4, 755 G4, 840 G4, 850 G4 and ProBook 430 G4, 450 G4, 455 G4, 470 G4.

PC4-19200 speed ceiling and single-module capacity

The DDR4-2400 interface caps throughput at the PC4-19200 rate, so bandwidth cannot exceed that level. A single 8 GB stick also limits total capacity unless the notebook has a second slot. Buyers needing higher memory speeds or larger single-module densities will need a different platform.

How it compares

Measured against everything we stock in Laptop RAM, at today’s prices. Recalculated every night.

Price $68.99
Typical for this category: the median of 2,079 items is $70.99.

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 nameTotal Micro Technologies
Model nameZ4Y85AA#ABA-TM
Size & build
Shipping weight0.45 kg
Package size229 × 142 × 64 mm

Questions about this item

Is the 8GB module sufficient or should I look for a higher capacity?

This module provides 8GB of DDR4 memory at 2400MHz. The listed HP EliteBook and ProBook models accept this capacity, so choose based on your workload and the number of slots available in your specific laptop.

What does the 2400MHz speed mean for everyday use?

The 2400MHz rating (PC4-19200) sets the maximum data transfer rate. In a compatible HP laptop it will run at this speed or at the highest speed the platform supports, improving responsiveness in multitasking and memory-intensive applications.

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