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Green circuit board with black memory chips, gold edge connector, no heat spreader

OWC

OWC 4GB DDR3 1600 CL11 2Rx8 240-pin 1.5V Non-ECC UDIMM memory upgrade

SKU CH-MC6Y-S2RWS

A 4 GB DDR3 1600 CL11 UDIMM upgrade for QNAP TS-1279U-RP, TS-1679U-RP and TS-879U-RP

  • Total capacity4 GB
  • Rated speedDDR3 1600 (PC3 12800)
  • CAS latencyCL11
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 4GB DDR3 1600 CL11 module adds responsive capacity for multitasking
  • JEDEC and RoHS compliant design ensures warranty-safe operation
  • Single 240-pin 1.5V unbuffered DIMM fits QNAP TS-1279U-RP TS-1679U-RP TS-879U-RP
  • 2Rx8 organisation delivers 4GB in one slot without ECC overhead
  • PC3-12800 speed rating matches original QNAP RAM-4GDR3-LD-1600 specification

4GB DDR3 upgrade for QNAP NAS

This 4GB DDR3 1600 CL11 UDIMM is built for the QNAP TS-879U-RP, TS-1279U-RP and TS-1679U-RP. It replaces the original QNAP part RAM-4GDR3-LD-1600 and adds a single unbuffered non-ECC module to compatible rackmount systems.

Tool-free DIMM installation with one caveat

The 240-pin module seats in the standard desktop DIMM slot and requires no special tools. The main issue is mixing ranks: this stick is 2Rx8, so adding it alongside 1Rx8 modules can prevent the NAS from posting. Match the existing rank configuration or populate all slots with identical modules.

Verify model, slot count and maximum memory

Confirm the exact NAS model number on the chassis label before ordering. Check how many DIMM slots your unit has and the maximum supported capacity per slot in the QNAP hardware guide. This module is not compatible with other QNAP series or standard desktop motherboards.

How it compares

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

Price $18.99
Cheaper than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $4.75 per GB
Cheaper than about 80% 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 nameOWC
Part number1U6D32R804 GB
Total capacity4 GB
Product type240-Pin DDR3 Non-ECC UDIMM
Performance
Rated speedDDR3 1600 (PC3 12800)
Memory
CAS latencyCL11
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsQNAP TS-1279U-RP
QNAP TS-1679U-RP
QNAP TS-879U-RP

Other versions of this model

5 more in the same range

Questions about this item

How do I confirm the 4GB DDR3 1600 CL11 module is running correctly after installing it in my QNAP TS-1279U-RP?

Enter the QNAP NAS web interface and open the system information or hardware monitor section; it will display the installed memory capacity, speed and type so you can verify the 4GB DDR3 1600 module is recognised.

What comes in the box and do I need to buy anything else to install this 240-pin UDIMM?

The box contains a single 4GB DDR3 1600 PC3-12800 CL11 2Rx8 240-pin 1.5V Non-ECC UDIMM module; no extra parts or tools are required for installation.

Which version should I choose for my QNAP TS-879U-RP — are there different capacities or speeds listed?

This specific part number 1U6D32R804GB is a single 4GB DDR3 1600 CL11 2Rx8 1.5V Non-ECC UDIMM; select this module to match the specifications required by the TS-879U-RP.

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