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Eight green 240-pin DDR3L ECC registered DIMM modules in static bags

OWC

OWC 256GB (8x32GB) DDR3L 1066 PC3L-8500 CL7 4Rx4 240-pin 1.35V ECC Registered DIMM server RAM

SKU CH-YXS5-QR4T8

ECC registered DDR3L kit provides 256GB across eight 32GB modules at 1066MHz CL7 for servers and workstations

  • Total capacity256 GB (8 × 32 GB)
  • Rated speedDDR3L 1066 (PC3L 8500)
  • CAS latencyCL7
  • Rated voltage1.35 V
  • Buffer typeRegistered
  • Memory rank4Rx4

Capacity 256GB (8 x 32GB)

Rank 4Rx4

  • ECC registered design protects data integrity in servers
  • 256GB kit with eight 32GB modules expands capacity
  • DDR3L 1066 CL7 at 1.35V lowers power draw
  • 240-pin RDIMM fits workstation and NAS systems
  • JEDEC and RoHS compliant for warranty-safe upgrades

256GB DDR3L ECC Registered Kit

This 256GB kit contains eight 32GB DDR3L 1066 modules built to the PC3L-8500 standard with CL7 latency and 1.35V operation. Each 240-pin DIMM uses 4Rx4 registered ECC chips designed for server and workstation motherboards that require registered memory. The kit is JEDEC compliant and RoHS certified for broad platform compatibility.

Suited for servers and workstations

This memory suits administrators upgrading compatible workstations, servers, NAS systems or routers that accept DDR3L ECC registered DIMMs. It will not work in standard desktop boards that only support unbuffered non-ECC modules, nor in systems requiring a different DDR generation or voltage. Builders needing unbuffered memory or consumer DDR standards must select a different product.

Registered ECC 240-pin DDR3L

The decisive specification is the registered ECC 240-pin DDR3L form factor combined with 1.35V 1066MHz speed. Only systems explicitly qualified for DDR3L ECC registered DIMMs can use this kit; all other platforms will reject the modules. Verify your motherboard documentation for registered ECC DDR3L support before purchase.

How it compares

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

Price $659.99
Pricier than about 74% of the 6,523 comparable items (median $188.99).
Total capacity 256 GB (8 × 32 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $2.58 per GB
Cheaper than about 91% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number8R5T34R4256K
Total capacity256 GB (8 × 32 GB)
Product type240-Pin DDR3L ECC RDIMM
Performance
Rated speedDDR3L 1066 (PC3L 8500)
Memory
CAS latencyCL7
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.35 V

Other versions of this model

5 more in the same range

Questions about this item

Will the 1.35V DDR3L 1066 modules run stably in a system that currently uses 1.5V DDR3 1066 DIMMs?

The kit is DDR3L rated at 1.35V. Most DDR3L modules also operate at 1.5V for backward compatibility, but the server or workstation must support DDR3L voltage to run at the lower 1.35V level.

How can I confirm the 256GB kit is recognised at 1066MHz with CL7 timings after installation?

Enter the system BIOS or UEFI and check the memory information screen; it should show 256GB total, 1066MHz speed, CL7 CAS latency, ECC registered and 4Rx4 organisation for each of the eight 32GB DIMMs.

Does the package include only the eight 32GB 240-pin ECC registered DIMMs or are any cables or brackets supplied?

The box contains the eight 32GB DDR3L 1066 PC3L-8500 CL7 4Rx4 240-pin 1.35V ECC registered DIMMs; no cables, brackets or additional accessories are included.

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