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Two green DDR3L DIMMs with black chips, no heat spreaders

Computer Memory Solutions

Computer Memory Solutions 16GB (2x8GB) DDR3L 1600 ECC Registered DIMM Z620 B33

SKU CH-EPER-4G1FN

16 GB kit of two DDR3L 1600 ECC registered DIMMs for HP Z620 workstations

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR3L 1600 (PC3L 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Memory timings11-11-11
  • Rated voltage1.35 V
  • ECC registered design protects data integrity in servers
  • Low-voltage 1.35 V DDR3L reduces power draw
  • CL11 11-11-11 timing delivers responsive 1600 MHz speed
  • 16 GB dual-channel kit expands Z620 to 192 GB RDIMM limit
  • 240-pin 2Rx4 modules install in all 12 Z620 sockets

System-Specific Upgrade for HP Z620

This 16 GB kit contains two 8 GB DDR3L registered ECC DIMMs validated for the HP Compaq Workstation Z620. It targets administrators expanding memory in that specific platform where registered modules are required. Builders using consumer boards or non-ECC platforms cannot use this memory.

Thermals Power and Noise

Operating at 1.35 V, the low-voltage DDR3L modules draw less power and generate less heat than standard 1.5 V DDR3. No heat spreaders are fitted, so airflow across the 240-pin sticks handles cooling silently. Registered buffering adds negligible latency at CL11 11-11-11 timings.

Capacity Jump From Smaller Kits

The Z620 supports up to 96 GB with unbuffered ECC or 192 GB with registered DIMMs across twelve sockets. Adding this 2Rx4 kit moves a workstation from minimal capacity toward those limits. The upgrade is worthwhile when workloads exceed current memory and registered ECC is mandatory.

How it compares

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

Price $17.99
Cheaper than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (2 × 8 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $1.12 per GB
Cheaper than about 96% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM10247212800ECCR2R4L
Total capacity16 GB (2 × 8 GB)
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3L 1600 (PC3L 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
Memory timings11-11-11
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Compatible systemsHp/Compaq Workstation Z620
In the box
Included items2 Memory RAM Sticks

Questions about this item

How do I install the 240-Pin DDR3L DIMMs into the Z620's 12 sockets without bending the registration notch?

Power off the workstation, open the chassis, align the off-centre notch on each 240-Pin module with the key in the DDR3 slot, press straight down until both retention clips click, then populate sockets in the order shown in the Z620 service guide.

Will the low-voltage 1.35V registered ECC modules need firmware updates or periodic replacement?

The DDR3L 1600 CL11 2Rx4 sticks contain no moving parts or batteries; they require no firmware updates and no scheduled replacement under normal server workloads.

At what point does the registered ECC design hit its throughput ceiling during sustained 1600 MHz operation?

The memory controller on the Z620 caps sustained bandwidth at the PC3L-12800 rate, so the 1600 MHz CL11 registered DIMMs reach their limit when all channels run continuously at that speed.

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