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Eight black DDR3 UDIMM modules without heat spreaders, 240-pin form factor

OWC

OWC 64GB (8x8GB) DDR3 1333 ECC Unbuffered UDIMM Kit

SKU CH-T7KN-91ZTE

Eight 8 GB DDR3 1333 ECC unbuffered modules totalling 64 GB for workstation, server or NAS upgrades

  • Total capacity64 GB (8 × 8 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • CAS latencyCL9
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • Kit configurationDual Channel Kit

Capacity 64GB (8 x 8GB)

  • 64 GB total capacity for demanding server workloads
  • ECC protection detects and corrects single-bit memory errors
  • DDR3 1333 MHz CL9 timing balances speed and stability
  • 5 V standard voltage ensures broad workstation compatibility
  • 240-pin unbuffered UDIMM form factor fits desktop and server slots

Capacity and purpose

This OWC kit provides 64GB of DDR3 1333 memory in eight 8GB unbuffered ECC UDIMMs for desktop workstations, servers and NAS systems that use 240-pin slots. The modules run at 1.5V with CL9 latency and meet JEDEC PC3-10600 specifications.

Who it fits and who should skip it

The 8x8GB configuration suits platforms that accept 240-pin DDR3 UDIMMs and benefit from ECC integrity, such as older workstations and entry-level servers. Systems that require registered DIMMs, a different DDR generation or lower total capacity should choose another kit.

The deciding specification

ECC unbuffered operation is the single attribute that determines compatibility; the motherboard must support ECC on unbuffered DDR3 UDIMMs or the modules will not provide error correction.

How it compares

Measured against everything we stock in Desktop RAM, at today’s prices. Recalculated every night.

Price $215.99
Pricier than about 70% of the 3,647 comparable items (median $90.99).
Total capacity 64 GB (8 × 8 GB)
Higher than about 90% of the 3,251 comparable items (median 16 GB).
Price per GB $3.37 per GB
Cheaper than about 89% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameOWC
Part number1E3D32R8064K
Total capacity64 GB (8 × 8 GB)
Product colorBlack
Performance
Rated speedDDR3 1333 (PC3 10600)
Memory
CAS latencyCL9
ECC supportYes
Buffer typeUnbuffered
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Recommended forWorkstations, Servers, and NAS Systems
More details
LED lightingNone

Other versions of this model

5 more in the same range

Questions about this item

What does the 1333MHz speed rating mean for actual system performance?

The modules run at 1333MHz with CL9 latency, delivering the standard DDR3 PC3-10600 data rate your workstation or server chipset expects for stable ECC operation.

How does the ECC unbuffered interface affect compatibility?

These are 240-pin DDR3 UDIMMs with on-die ECC; they work in desktop, workstation and server boards that support unbuffered ECC, but not in systems requiring registered or load-reduced DIMMs.

Will the 8x8GB sticks fit a standard 240-pin DIMM slot without a heat spreader?

Yes, each 8GB module uses a plain 240-pin PCB at 1.5V with no heat spreader, so it fits any standard DDR3 UDIMM socket with normal clearance.

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