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Four green DDR4 memory sticks, no heat spreaders

Computer Memory Solutions

Computer Memory Solutions CM2048722133ECCNRD 64GB (4x16GB) DDR4 2133MHz ECC CL15 1.2V 288-pin DIMM

SKU CH-YM55-RTB81

Four 16 GB DDR4 modules at 2133 MHz with ECC and CL15 timing, validated for Synology RackStation RS3617RPxs

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL15
  • Memory timings15-15-15
  • Rated voltage1.2 V
  • Guaranteed compatibility with Synology RS3617RPxs validated by vendor
  • 64GB total capacity across four 16GB modules for full system memory
  • ECC protection detects and corrects single-bit data errors automatically
  • CL15 timing at 2133MHz delivers responsive DDR4 performance
  • Low 1.2V operation reduces power draw and heat output

Synology RackStation RS3617RPxs memory kit

This 64 GB kit contains four 16 GB DDR4 modules built for the Synology RackStation RS3617RPxs. Each stick is an unregistered ECC DIMM that fills all four slots to reach the system maximum. The CL15 timing and 1.2 V operation match the platform requirements exactly.

Thermals noise and power draw

Unbuffered DDR4 at 1.2 V runs cool without a heat spreader in the RS3617RPxs chassis. Passive airflow through the rack unit keeps module temperatures low during continuous operation. The low voltage and standard density draw minimal power from the system supply.

64 GB capacity limit

The RS3617RPxs supports a maximum of 64 GB across four slots, so this kit saturates the platform. Builders who need more memory must choose a different server model. The four-module pack leaves no free slots for future expansion.

How it compares

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

Price $273.99
Cheaper than about 55% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $4.28 per GB
Cheaper than about 83% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM2048722133ECCNRD
Total capacity64 GB (4 × 16 GB)
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2133 (PC4 17000)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL15
Memory timings15-15-15
ECC supportYes
Buffer typeUnregistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSynology RackStation RS3617RPxs
In the box
Included items4 Memory RAM Sticks

Questions about this item

How do I install the 4x16GB DDR4 2133MHz ECC DIMMs in the Synology RS3617RPxs and which step is often missed?

Power off the RackStation, open the chassis, and insert each 288-pin module into all four slots until the retention clips click; the step often missed is verifying the system recognises the full 64GB in DSM after reboot.

What maintenance or replacement will the CM2048722133ECCNRD kit need over time?

The unbuffered ECC modules have no heat spreaders and no moving parts, so no routine maintenance is required; replacement is only necessary if a stick fails, which is covered by the manufacturer's limited lifetime exchange warranty.

What limit appears first when the RS3617RPxs runs sustained workloads with this 64GB DDR4-2133 CL15 kit?

The platform's four-slot, 64GB maximum is reached by this kit, so memory capacity is the first ceiling; the CL15 1.2V modules operate within rated speed and voltage, so thermal throttling is unlikely under normal server loads.

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