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Two green DDR3 ECC registered DIMMs with gold contacts, no heat spreaders

A-Tech

A-Tech 32GB (2x16GB) DDR3 1600 ECC RDIMM 2Rx4 1.5V 240-Pin for HP Z420 Z620 Z820

SKU CH-F59R-WQ57V

DDR3 1600 ECC registered 32GB kit with two 16GB 2Rx4 modules for HP Z420, Z620 and Z820 workstations

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR3 1600 (PC3 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Rated voltage1.5 V
  • Buffer typeRegistered

Capacity 32GB (2 x 16GB)

  • 32 GB ECC registered kit protects data integrity on HP Z workstations
  • DDR3 1600 MHz PC3-12800 speed matches system specification
  • 2Rx4 dual-rank organisation maximises capacity per channel
  • 5 V operation matches original platform voltage
  • 240-pin DIMM form factor fits Z420 Z620 Z820 slots

HP Z420 Z620 Z820 Memory Kit

This 32GB kit contains two 16GB DDR3 1600 ECC registered DIMMs built for second-generation HP Z workstations. The modules run at 1.5V with CL11 latency and a 2Rx4 organisation. They are designed to install directly into Z420, Z620 and Z820 systems.

Upgrade from smaller or slower DDR3 sets

Replacing lower-capacity or slower DDR3 modules with this kit raises the ceiling for multi-threaded workloads and large datasets. The jump is worth it when the workstation currently limits concurrent tasks or forces frequent paging to disk.

Installation follows the system manual

Seat the two 240-pin RDIMMs in the slots specified by the HP service guide for the correct channel population. The most common issue is mixing these registered modules with unbuffered ECC DIMMs, which the platform does not support.

How it compares

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

Price $125.99
Cheaper than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $3.94 per GB
Cheaper than about 85% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameA-Tech
Product line2nd Gen. HP Z Workstation Compatible
Model name32 GB (2 × 16 GB) 2Rx4 PC3-12800 RDIMM for HP Z Workstation Z420, Z620, Z820
Part numberNE-MS-0095
Total capacity32 GB (2 × 16 GB)
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3 1600 (PC3 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsHP Z Workstation Z420, Z620, Z820
In the box
Included itemsTwo Modules
More details
VariantCompatible with HP Z Workstation Z420, Z620, Z820

Other versions of this model

5 more in the same range

Questions about this item

Will these 240-pin DDR3 DIMMs fit the memory slots in an HP Z420, Z620 or Z820 workstation?

Yes. The kit is built to the 240-pin DDR3 DIMM form factor used by all three workstation models.

What is the correct way to install the two 16 GB modules so the system recognises the full 32 GB?

Follow the workstation manual for channel population order; the registered ECC modules must go in the prescribed slots and cannot be mixed with unbuffered ECC memory.

Does the lack of a heat spreader on these 1.5 V modules mean I will need to add cooling later?

No extra cooling is required; the modules run at the standard 1.5 V DDR3 voltage without a spreader and are designed for the workstation's existing airflow.

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