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Eight black DDR3 UDIMM modules in a row

OWC

OWC 8E5D32R8064K 64GB (8x8GB) DDR3 1066 CL7 ECC Unbuffered UDIMM

SKU CH-JTNB-RS33Y

Eight 8 GB DDR3-1066 CL7 ECC unbuffered DIMMs deliver 64 GB at 1.5 V for workstations, servers and NAS systems

  • Capacity64GB (8 x 8GB)
  • SpeedDDR3 1066 (PC3 8500)
  • CAS LatencyCL7
  • Voltage1.5V
  • ECCYes
  • Buffered/RegisteredUnbuffered

Capacity 64GB (8 x 8GB)

  • 64 GB total capacity across eight 8 GB modules
  • DDR3 1066 speed with CL7 latency for responsive multitasking
  • ECC unbuffered design protects data integrity in workstations and servers
  • JEDEC-standard 1.5 V operation ensures broad platform compatibility
  • 240-pin UDIMM form factor fits standard desktop and server slots

64GB DDR3 ECC kit for workstations

This OWC kit supplies 64GB of DDR3 1066 memory in eight 8GB unbuffered UDIMMs. ECC protection and CL7 latency suit workstations, servers and NAS systems that require data integrity. The modules run at the standard 1.5V JEDEC voltage.

Sustained load stability with ECC

Error-correcting code detects and corrects single-bit errors during continuous operation, preventing silent data corruption in long-running tasks. Unbuffered topology keeps latency low while the CL7 timing supports steady throughput. JEDEC compliance ensures consistent behaviour across extended sessions.

240-pin UDIMM layout for broad compatibility

Each module uses the 240-pin DDR3 form factor without a heat spreader, allowing tight slot spacing in multi-channel configurations. Black PCB and standard height simplify installation in dense server or workstation chassis. The eight-module kit populates all channels for balanced bandwidth.

Highlights

  • 64 GB total capacity across eight 8 GB modules
  • DDR3 1066 speed with CL7 latency for responsive multitasking
  • ECC unbuffered design protects data integrity in workstations and servers
  • JEDEC-standard 1.5 V operation ensures broad platform compatibility
  • 240-pin UDIMM form factor fits standard desktop and server slots

Specifications

BrandOWC
Part Number8E5D32R8064K
Capacity64GB (8 x 8GB)
SpeedDDR3 1066 (PC3 8500)
CAS LatencyCL7
Voltage1.5V
ECCYes
Buffered/RegisteredUnbuffered
Multi-channel KitDual Channel Kit
ColorBlack
Heat SpreaderNo
Recommend UseWorkstations, Servers, and NAS Systems
LED ColorNone

Other versions of this model

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Questions about this item

Will these modules fit a motherboard that only accepts 240-pin DDR3 DIMMs?

Yes, each stick is a 240-pin DDR3 UDIMM, so it matches that slot type exactly.

Can I install this 64GB kit in a system limited to 32GB maximum memory?

No, the kit provides 64GB total; a 32GB limit would prevent full use of all eight modules.

Does the CL7 latency at 1066MHz require manual BIOS timing changes?

The modules are JEDEC-standard PC3-8500 CL7 parts, so they should configure automatically at rated speed.

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