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Two green DDR3L SODIMM modules with black chips, no heat spreaders

Computer Memory Solutions

Computer Memory Solutions 16GB (2x8GB) DDR3L 1600MHz CL11 SODIMM for Synology DS218+

SKU CH-HMXW-SYK4J

A 16 GB DDR3L SODIMM kit built for the Synology DS218+, running at 1600 MHz with CL11 latency and 1.35 V operation

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR3L 1600 (PC3L 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Memory timings11-11-11
  • Rated voltage1.35 V
  • 16 GB dual-channel kit expands DS218+ capacity
  • DDR3L 1600 MHz CL11 timing matches system spec
  • 35 V low-voltage modules reduce power draw
  • 204-pin SODIMM form factor fits NAS slots
  • Lifetime repair or exchange warranty from CMS

Synology DS218+ memory upgrade kit

This 16GB kit contains two 8GB DDR3L 1600 SODIMM modules built for the Synology DiskStation DS218+. It raises the NAS to its 16GB maximum across the two available slots. The modules run at 1.35V with CL11 timing and use unbuffered, non-ECC chips.

Who should buy and who should not

The kit suits DS218+ owners who need the full 16GB capacity for virtual machines, heavy caching or multi-user workloads. Builders working with other Synology models, desktop motherboards or laptops should look elsewhere because the modules are validated only for the DS218+. Systems that require ECC or registered memory cannot use this kit.

Deciding specification — DDR3L 1600 SODIMM 204-pin

The memory uses the DDR3L 1600 (PC3L 12800) standard on a 204-pin SODIMM form factor. This exact combination of voltage, speed and pin layout is what lets the modules fit and operate in the DS218+ slots. Any other generation or pin count will not install in this NAS.

How it compares

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

Price $38.99
Cheaper than about 81% 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 $2.44 per GB
Cheaper than about 92% 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 nameCM10246412800SODRL
Total capacity16 GB (2 × 8 GB)
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3L 1600 (PC3L 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
Memory timings11-11-11
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Compatible systemsSynology DiskStation DS218+
In the box
Included items2 Memory RAM Sticks

Questions about this item

How do I install the 204-pin DDR3L SODIMM modules into the DS218+ and which step is often missed?

Power off the DS218+, remove the drive trays, open the chassis cover, insert each module at an angle into the two SODIMM slots until the clips click, then reassemble; the step often missed is fully seating both modules before replacing the cover.

What maintenance or replacement will the 16GB kit need during its service life?

No scheduled maintenance is required; the modules are covered by a limited lifetime warranty against manufacturing defects, so replacement would only occur if a stick fails.

What limit appears first when the DS218+ runs sustained workloads with this memory?

The platform caps total memory at 16GB across the two slots, so capacity is the first constraint; the DDR3L 1600 CL11 modules run at their rated 1.35V without thermal throttling.

More in Model-Specific Memory Upgrades

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