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Three green DDR3 ECC memory modules, 240-pin DIMMs without heat spreaders

Computer Memory Solutions

Computer Memory Solutions 12GB (3 x 4GB) DDR3 1333 ECC Unregistered Memory Upgrade - B81

SKU CH-461N-3956R

ECC unregistered DDR3 kit adds 12 GB across three 4 GB modules for HP Z-series workstations

  • Total capacity12 GB (3 × 4 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL9
  • Memory timings9-9-9
  • Rated voltage1.5 V
  • ECC protection guards data integrity on supported HP workstations
  • Triple-channel 1333 MHz DDR3 kit boosts bandwidth across three slots
  • 12 GB total capacity expands memory for demanding workloads
  • Unregistered 1.5 V DIMMs install directly without buffer overhead
  • Guaranteed compatibility with Z200, Z210, Z400, Z600, Z800 systems

System-specific DDR3 ECC kit

Computer Memory Solutions supplies a 12 GB kit built from three 4 GB unregistered ECC DIMMs. Each module runs at DDR3-1333 with CL9 timings at 1.5 V. The 240-pin sticks are validated for HP Z200, Z210, Z400, Z600 and Z800 workstations.

Triple-channel population

The workstations use three memory channels per CPU, so the three-module kit fills one bank for interleaved bandwidth. Modules may be added one at a time, but peak throughput needs all three channels populated. DDR3-1333 parts automatically clock down to 1066 MHz or 800 MHz depending on the installed Xeon model and total module count.

Buyers restoring or expanding compatible HP

Shops upgrading supported Z-series systems with ECC unregistered memory will find the kit a direct fit. Builds that require registered DIMMs, capacities beyond 48 GB with two CPUs, or non-ECC consumer modules should look elsewhere.

How it compares

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

Price $85.99
Cheaper than about 69% of the 21,161 comparable items (median $397.99).
Total capacity 12 GB (3 × 4 GB)
Lower than about 75% of the 20,941 comparable items (median 32 GB).
Price per GB $7.17 per GB
Cheaper than about 56% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM5127210600ECCNRH2R8
Total capacity12 GB (3 × 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 Z200, Z210, Z400, Z600, Z800
In the box
Included items3 Memory RAM Sticks

Questions about this item

Will the 1333 MHz speed hold under sustained load?

The modules are rated DDR3-1333 (PC3-10600) with CL9 timing at 1.5 V. The system automatically clocks them down to 1066 MHz or 800 MHz depending on the Xeon model and number of modules installed.

How much heat and power should I expect from three 4 GB sticks running all day?

Each stick runs at 1.5 V without a heat spreader. Total capacity is 12 GB across three unregistered ECC DIMMs; power draw and thermals follow standard DDR3-1333 unbuffered specifications.

Which workstation must I already own for this kit to work?

The kit is guaranteed compatible with HP Workstation Z200, Z210, Z400, Z600 or Z800. Z600 systems require a C2-revision Intel 5520 chipset board for registered DIMMs, but these modules are unregistered ECC.

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