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Two green DDR3L LRDIMM sticks, 240-pin, no heat spreader

OWC

OWC 64GB (2×32GB) DDR3L 1600 CL11 1.35V ECC LRDIMM 240-pin memory upgrade

SKU CH-Y5AS-38T41

A 64 GB DDR3L 1600 ECC load-reduced DIMM kit for Cisco UCS C24 M3, C240 M3 and C420 M3 servers

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR3L 1600 (PC3L 12800)
  • CAS latencyCL11
  • Rated voltage1.35 V
  • Buffer typeLoad Reduced
  • Memory rank4Rx4

Capacity 64GB (2 x 32GB)

  • ECC load-reduced design protects data integrity in servers
  • 64 GB kit (2 × 32 GB) expands Cisco UCS capacity
  • DDR3L 1600 CL11 at 1.35 V meets JEDEC specs
  • 240-pin LRDIMM form factor fits C24 M3, C240 M3, C420 M3
  • 4Rx4 organisation enables high-density registered memory configurations

Cisco UCS DDR3L ECC LRDIMM kit

This OWC kit supplies 64 GB as two 32 GB DDR3L 1600 CL11 load-reduced ECC modules. Each stick is a 240-pin LRDIMM rated at 1.35 V and organised as 4Rx4. The kit replaces Cisco part numbers UCSML1X324RYA, UCS-ML-1X324RZ-A and UCSML2X324RYE. It is validated for Cisco UCS C24 M3, C240 M3 and C420 M3 servers.

Server administrators extending Cisco UCS M3 memory

The modules suit IT teams adding capacity to the listed Cisco UCS M3 platforms where load-reduced ECC DDR3L is required. Builders working with standard desktops, workstations that take unbuffered or registered ECC DIMMs, or any system not listed above cannot use this memory. Mixing these LRDIMMs with other memory types is not supported.

Load-reduced ECC DDR3L 1600 4Rx4 1.35 V

The decisive specification is the load-reduced ECC DDR3L 1600 4Rx4 1.35 V 240-pin form factor. Only systems qualified for this exact module type will recognise and run the kit at its rated speed and capacity.

How it compares

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

Price $72.99
Cheaper than about 72% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $1.14 per GB
Cheaper than about 96% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number1L6T34R4064P
Total capacity64 GB (2 × 32 GB)
Product type240-Pin DDR3L ECC LRDIMM
Performance
Rated speedDDR3L 1600 (PC3L 12800)
Memory
CAS latencyCL11
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Compatible systemsCisco UCS C24 M3
Cisco UCS C240 M3
Cisco UCS C420 M3

Other versions of this model

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Questions about this item

How much power does the 1.35 V DDR3L 1600 kit draw when the server runs 24/7?

The modules operate at 1.35 V DDR3L 1600; exact wattage depends on the Cisco UCS platform and workload, so consult the system documentation for per-DIMM power figures.

What must the Cisco UCS C240 M3 already have for these 32 GB 4Rx4 LRDIMMs to work?

The server must support DDR3L 1600 ECC Load-Reduced DIMMs and have free 240-pin slots; they cannot be mixed with unbuffered or standard registered ECC memory.

Can I add this 64 GB kit alongside the original Cisco UCS-ML-1X324RZ-A sticks in my C420 M3?

No — Load-Reduced DIMMs cannot be mixed with registered ECC modules, so all slots must use identical LRDIMM specifications.

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