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Four green DDR3 DIMMs with black chips no heat spreaders

Computer Memory Solutions

Computer Memory Solutions 32GB (4×8GB) DDR3-1600 ECC Unregistered DIMM CL11 1.5V 240-pin HP Z420 B90

SKU CH-WCV2-FMW7T

Four 8 GB DDR3-1600 ECC unregistered DIMMs totalling 32 GB for HP Z420 workstations

  • Total capacity32 GB (4 × 8 GB)
  • Rated speedDDR3 1600 (PC3 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Memory timings11-11-11
  • Rated voltage1.5 V
  • 32 GB total capacity for demanding workloads
  • ECC protection detects and corrects memory errors
  • 1600 MHz DDR3 speed with CL11 latency
  • 240-pin unregistered DIMMs fit HP Z420 workstations
  • Four 8 GB modules enable full-channel performance

System-Specific DDR3 Kit

This 32GB kit contains four 8GB DDR3-1600 ECC unregistered DIMMs built for the HP Z420 workstation. Each module runs at CL11 with 1.5V across 240 pins. The set is validated for that platform and ships as a matched 4-piece kit.

ECC Unregistered Design

The memory uses ECC unregistered (unbuffered) DIMMs in a 2Rx8 configuration. Error correction protects data integrity while the unregistered layout matches the Z420’s supported topology. No heat spreaders are fitted and chip brands may vary.

Capacity Limits and Speed Steps

The Z420 accepts up to 32GB with a 400W chassis or 64GB with a 600W chassis across eight sockets. Depending on the installed processor the kit will operate at 1066, 1333, 1600 or 1866 MHz; 1866 MHz requires an E5-2600 v2 or E5-1600 v2 CPU.

How it compares

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

Price $84.99
Cheaper than about 69% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (4 × 8 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $2.66 per GB
Cheaper than about 91% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM10247212800ECCNRDIMM2R8
Total capacity32 GB (4 × 8 GB)
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3 1600 (PC3 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
Memory timings11-11-11
ECC supportYes
Buffer typeUnregistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsHp/Compaq Workstation Z420
In the box
Included items4 Memory RAM Sticks

Questions about this item

Will the 1600 MHz speed run at full rate in my Z420 workstation?

The Z420 runs memory at 1866, 1600, 1333 or 1066 MHz depending on the processor installed. E5-2600 v2 or E5-1600 v2 CPUs are required for 1866 MHz; otherwise the kit will operate at 1600 MHz or the next lower supported speed.

Does the 240-pin DDR3 DIMM fit every Z420 memory slot?

Yes. The kit uses standard 240-pin DDR3 unregistered DIMMs, which match the Z420's eight DIMM sockets. Each module is a 2Rx8 8 GB stick, so four modules occupy four of the eight slots.

What clearance do the modules need inside the Z420 chassis?

The sticks have no heat spreader, keeping them at the standard low-profile DDR3 height. They fit the Z420's DIMM sockets without interfering with CPU coolers or the 400 W or 600 W power-supply chassis.

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