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Four green DDR4 DIMM sticks, no heat spreaders

Computer Memory Solutions

Computer Memory Solutions CM2048722400ECCNR 64GB (4x16GB) DDR4 2400 ECC DIMM

SKU CH-77WM-MX5HG

A 64 GB kit of four 16 GB DDR4 2400 ECC DIMMs validated for Synology RackStation RS2418+ and RS2418RP+ systems

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL17
  • Memory timings17-17-17
  • Rated voltage1.2 V
  • 64 GB total capacity lets the Synology RS2418+ reach its 64 GB maximum
  • ECC protection detects and corrects single-bit errors for data integrity
  • DDR4 2400 speed (PC4 19200) matches the system specification
  • CL17 latency and 1.2 V voltage keep timing tight and power low
  • Four 16 GB unregistered DIMMs fill all four slots in a single kit

64GB DDR4 ECC kit for Synology RS2418+

This 64GB kit contains four 16GB DDR4 2400 modules built to the PC4 19200 standard with CL17 timings and 1.2V operation. Each stick is a 288-pin unregistered ECC DIMM using 2Rx8 organisation and major-brand chips. The kit is validated for Synology RackStation RS2418+ and RS2418RP+ systems that support a maximum of 64GB across four sockets.

Suited for RS2418+ owners filling all slots

Buyers upgrading a Synology RackStation RS2418+ or RS2418RP+ to the full 64GB capacity will use every socket with this matched set. ECC protection and unbuffered design meet the platform requirements. Builders needing registered modules, higher frequencies, lower latencies, heat spreaders or capacities beyond 64GB should look at other memory lines.

Fits four DIMM slots at 1.2V

Installation occupies all four DDR4 DIMM sockets in the compatible RackStation units and draws standard 1.2V power. No extra cooling hardware is required because the modules ship without heat spreaders. The kit leaves no free slots for future expansion, so the 64GB total is the final memory configuration for the chassis.

How it compares

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

Price $389.99
Typical for this category: the median of 21,161 items is $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 $6.09 per GB
Cheaper than about 64% 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 nameCM2048722400ECCNR
Total capacity64 GB (4 × 16 GB)
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2400 (PC4 19200)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL17
Memory timings17-17-17
ECC supportYes
Buffer typeUnregistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSynology RackStation RS2418+/RS2418RP+
In the box
Included items4 Memory RAM Sticks

Questions about this item

My Synology RS2418+ has four slots — does this 4 x 16 GB kit fill them all?

Yes, the kit contains four 16 GB DIMMs that occupy all four slots in the RS2418+ or RS2418RP+ and reach the system maximum of 64 GB.

Will these unregistered ECC modules run with the registered DIMMs already in my RS2418RP+?

No, unregistered and registered DIMMs cannot be mixed; the RS2418RP+ requires all slots to use the same module type.

After installing the four sticks, how can I confirm the NAS is running them at 2400 MHz with ECC active?

Open DSM, go to Control Panel > Info Center > Memory — it will show 64 GB, 2400 MHz speed and ECC status as enabled.

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