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Single black DDR3 UDIMM with 240 gold pins and no heat spreader

OWC

OWC 4GB DDR3 1066 PC3-8500 CL7 ECC Unbuffered UDIMM

SKU CH-9JCV-86KQY

4 GB DDR3 1066 PC3-8500 CL7 ECC unbuffered UDIMM for desktops, workstations and servers

  • Total capacity4 GB
  • Rated speedDDR3 1066 (PC3 8500)
  • CAS latencyCL7
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • Recommended forWorkstations, Servers, and NAS Systems

Capacity 4GB

  • ECC protection prevents data corruption in critical workloads
  • 1066 MHz DDR3 speed delivers responsive multitasking
  • CL7 latency reduces access delays for smoother operation
  • 5 V JEDEC-standard voltage ensures broad platform compatibility
  • 240-pin unbuffered DIMM fits standard desktop and server slots

Single 4 GB DDR3 ECC UDIMM

This module is a 4 GB DDR3 1066 PC3-8500 CL7 ECC unbuffered UDIMM built for desktops, workstations and servers that accept 240-pin DDR3 memory. It operates at 1.5 V and uses a 2Rx8 organisation without a heat spreader.

JEDEC and RoHS compliant build

The stick meets JEDEC-standard timings and RoHS requirements so it can be installed without voiding the original system warranty. No extra software or drivers are bundled; the upgrade relies solely on the module’s factory-tested compliance.

Verify DDR3 240-pin ECC support

Before ordering, confirm that the motherboard or server board accepts DDR3 1066 ECC unbuffered DIMMs and has a free 240-pin slot. Check the system manual for maximum capacity per slot and whether mixed ECC and non-ECC populations are allowed.

How it compares

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

Price $19.99
Cheaper than about 88% of the 3,647 comparable items (median $90.99).
Total capacity 4 GB
Lower than about 80% of the 3,251 comparable items (median 16 GB).
Price per GB $5.00 per GB
Cheaper than about 72% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameOWC
Part number8E5D32R804 GB
Total capacity4 GB
Product colorBlack
Performance
Rated speedDDR3 1066 (PC3 8500)
Memory
CAS latencyCL7
ECC supportYes
Buffer typeUnbuffered
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

Will this module fit a standard desktop motherboard with 240-pin DDR3 slots?

Yes, the stick is a 240-pin DDR3 UDIMM that plugs directly into any desktop board accepting DDR3 1066 or faster unbuffered memory.

Does the ECC feature work on a regular consumer desktop or only on workstation and server boards?

ECC functions only when the motherboard and CPU support it; most consumer desktops ignore the extra bits, so the module will run as non-ECC memory.

Can I mix this 4 GB stick with my existing 2 GB DDR3 1066 modules?

Mixing capacities is possible if all modules share the same voltage (1.5 V) and speed; the system will run at the slowest module's timings.

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