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Four green DDR3L RDIMM modules with gold contacts

OWC

OWC 64GB (4x16GB) DDR3L 1600 CL11 2Rx4 1.35V ECC Registered RDIMM server RAM

SKU CH-73MD-SY1Z4

A 64 GB DDR3L ECC registered RDIMM kit of four 16 GB modules running at 1600 MHz CL11 and 1.35 V for servers and workstations

  • Capacity64GB (4 x 16GB)
  • Type240-Pin DDR3L ECC RDIMM
  • SpeedDDR3L 1600 (PC3L 12800)
  • CAS LatencyCL11
  • Voltage1.35V
  • ECCYes

Capacity 64GB (4 x 16GB)

Rank 2Rx4

  • ECC registered design protects data integrity in servers
  • 64 GB kit (4 × 16 GB) expands memory capacity
  • DDR3L 1600 CL11 at 1.35 V reduces power draw
  • 240-pin RDIMM form factor fits workstation and server slots
  • JEDEC and RoHS compliant for warranty-safe upgrades

Server ECC RDIMM kit

This OWC kit supplies 64GB of DDR3L ECC registered memory across four 16GB modules. It targets workstations, servers, NAS appliances and routers that require 240-pin registered DIMMs with error correction. The modules run at 1.35V and carry a CL11 latency rating at 1600 MT/s. Standard desktop boards cannot use this memory.

DDR3L 1600 registered limits

The DDR3L 1600 standard tops out at 1600 MT/s with a 1.35V operating voltage, so bandwidth and latency are fixed by the JEDEC specification. Registered buffering adds one clock cycle of command delay, which is mandatory for platform stability but reduces raw throughput versus unbuffered equivalents. Mixing these modules with unbuffered DIMMs is not supported and will prevent boot.

Upgrade from smaller registered sets

The kit replaces an existing registered DDR3L set when the platform has four free slots and the workload needs more capacity than 16GB or 32GB can provide. The jump is worth it when virtualization, large datasets or multi-user services exhaust the current memory and the board accepts 2Rx4 registered modules at this speed. It does not fit systems that only support unbuffered or non-ECC memory.

Puntos fuertes

  • ECC registered design protects data integrity in servers
  • 64 GB kit (4 × 16 GB) expands memory capacity
  • DDR3L 1600 CL11 at 1.35 V reduces power draw
  • 240-pin RDIMM form factor fits workstation and server slots
  • JEDEC and RoHS compliant for warranty-safe upgrades

Especificaciones

BrandOWC
Part Number1R6T32R4064S
Capacity64GB (4 x 16GB)
Type240-Pin DDR3L ECC RDIMM
SpeedDDR3L 1600 (PC3L 12800)
CAS LatencyCL11
Voltage1.35V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

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Preguntas sobre este artículo

Should I choose the 64 GB kit or buy single 16 GB modules?

The kit contains four matched 16 GB modules totalling 64 GB; buying them together ensures identical timings and avoids mixing ranks.

What does DDR3L 1600 CL11 mean for my server workload?

It runs at 1600 MT/s with CAS latency 11 at 1.35 V, giving standard bandwidth for DDR3L registered DIMMs in typical server tasks.

Will the 240-pin registered ECC interface work in my workstation?

The modules are 240-pin DDR3L ECC registered RDIMMs; they only fit systems that explicitly support registered ECC memory.

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