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Eight green DDR3 RDIMM modules in anti-static tray

A-Tech

A-Tech 64GB (8x8GB) DDR3 1600 RDIMM for HP Z420 Z620 Z820

SKU CH-GQHQ-TDN2Z

Eight registered ECC DDR3 modules add 64 GB at 1600 MHz for HP Z420, Z620 and Z820 workstations

  • Capacity64GB (8 x 8GB)
  • Type240-Pin DDR3 SDRAM
  • SpeedDDR3 1600 (PC3 12800)
  • CAS LatencyCL11
  • Voltage1.50V
  • ECCYes

Capacity 64GB (8 x 8GB)

  • 64 GB capacity across eight modules handles heavy workloads
  • DDR3 1600 MHz speed accelerates data throughput
  • ECC registered design corrects errors for stability
  • 5 V operation matches workstation power requirements
  • Tested for HP Z420 Z620 Z820 compatibility

Targeted Workstation Upgrade

This 64GB kit delivers eight 8GB DDR3 1600 RDIMM modules built specifically for second-generation HP Z420, Z620 and Z820 workstations. ECC registered operation with 2Rx4 organisation protects data integrity in professional workloads. The 1.5V modules install directly into the 240-pin DIMM slots provided by these platforms.

Build Integration

Registered DIMM architecture requires a chipset and processor that support RDIMM signalling; the target workstations provide this natively. Mixing with unbuffered ECC modules is not supported, so all slots should be populated with matching registered parts. Eight modules fill the available channels on Z820 and maximise capacity on Z420 or Z620 configurations.

Upgrade Context

The kit replaces lower-capacity or mixed-speed DDR3 sets that limit multitasking headroom in memory-intensive applications. Moving to a full 64GB matched kit eliminates speed mismatches and rank inconsistencies that can force the system to run at reduced frequencies. The jump is worth it when workloads exceed the capacity of a partial population or when ECC registered reliability becomes a requirement.

Highlights

  • 64 GB capacity across eight modules handles heavy workloads
  • DDR3 1600 MHz speed accelerates data throughput
  • ECC registered design corrects errors for stability
  • 5 V operation matches workstation power requirements
  • Tested for HP Z420 Z620 Z820 compatibility

Specifications

BrandA-Tech
Series2nd Gen. HP Z Workstation Compatible
Model64GB (8x8GB) 2Rx4 PC3-12800 RDIMM for HP Z Workstation Z420, Z620, Z820
Part NumberNE-MS-0098
Capacity64GB (8 x 8GB)
Type240-Pin DDR3 SDRAM
SpeedDDR3 1600 (PC3 12800)
CAS LatencyCL11
Voltage1.50V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemHP Z Workstation Z420, Z620, Z820
OptionCompatible with HP Z Workstation Z420, Z620, Z820
FeaturesDesigned for HP Z Workstation Z420, Z620, Z820
Package ContentEight Modules

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Questions about this item

What is the CAS latency of these DDR3 1600 RDIMMs?

The modules run at CL11 latency, which is the standard timing for DDR3 1600 registered memory.

How much power and heat will eight 1.5 V RDIMMs add to a Z420 running continuously?

Each module operates at 1.50 V; total power draw depends on workload but registered DIMMs typically run cooler than high-density unbuffered kits.

Does my HP Z620 need a specific BIOS revision or CPU stepping to recognise all 64 GB?

The kit is validated for 2nd Gen HP Z Workstations Z420, Z620 and Z820; consult the system manual for memory seating and channel guidelines.

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