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Four green DDR3 DIMMs, black chips, no heat spreader

Computer Memory Solutions

Computer Memory Solutions 16GB (4x4GB) DDR3 1333 ECC Unregistered DIMM Z820 B126

SKU CH-BCD7-SXF62

16 GB ECC DDR3 kit in four 4 GB unregistered DIMMs for the HP Z820 workstation

  • Total capacity16 GB (4 × 4 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL9
  • Memory timings9-9-9
  • Rated voltage1.5 V
  • 16 GB total capacity from four matched 4 GB modules
  • ECC protection detects and corrects single-bit errors
  • DDR3 1333 MHz speed with CL9 timing
  • Unregistered 240-pin DIMMs designed for HP Z820 workstations
  • Lifetime warranty from Computer Memory Solutions

HP Z820 DDR3 ECC kit

This kit provides 16 GB of DDR3 ECC memory in four 4 GB unregistered DIMMs built for the HP Workstation Z820. It suits technicians upgrading or repairing that specific workstation platform.

DDR3 1333 speed ceiling

The modules run at 1333 MHz with CL9 timing and 1.5 V. The Z820 accepts 1066 MHz, 1333 MHz or 1600 MHz depending on the processor installed, so this kit will operate at its rated speed only with a compatible CPU.

Four-slot unregistered limit

The workstation supports up to 64 GB of unbuffered ECC across its 16 sockets, but mixing unregistered and registered DIMMs is not supported. Builders needing more than 64 GB or registered memory must choose a different configuration.

How it compares

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

Price $94.99
Cheaper than about 68% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (4 × 4 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $5.94 per GB
Cheaper than about 66% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM5127210600ECCNRH2R8
Total capacity16 GB (4 × 4 GB)
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3 1333 (PC3 10600)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL9
Memory timings9-9-9
ECC supportYes
Buffer typeUnregistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsHp Workstation Z820
In the box
Included items4 Memory RAM Sticks

Questions about this item

Should I pick the 16GB (4×4GB) kit or a single 4GB module for my Z820?

The Z820 has 16 DIMM slots in 8 banks of 2; the 16GB kit fills four slots at once and keeps each bank balanced, while a single 4GB stick leaves the other slot in that bank empty and limits total capacity.

What does the 1333MHz rating deliver once the modules are installed in the Z820?

The system runs the memory at 1333MHz when the installed processor supports that speed; otherwise it steps down to 1066MHz, so actual throughput depends on the CPU model.

Is this DDR3-10600 ECC UDIMM limited by the Z820's memory controller?

Yes — the Z820 accepts both registered and unbuffered ECC DDR3 but will not mix them; the kit's 1.5V unbuffered modules run at 1333MHz or 1066MHz as the processor allows, up to the 64GB unbuffered maximum.

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