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Green rectangular circuit board with gold edge connectors and black memory chips on both sides

OWC

OWC 8GB DDR3 1600 ECC Registered RDIMM 1Rx4 CL11 1.5V 240-pin server RAM

SKU CH-T2W7-Z6EXK

8 GB DDR3 1600 ECC registered RDIMM, CL11, 1.5 V, 240-pin, 1Rx4 for servers and workstations

  • Total capacity8 GB
  • Rated speedDDR3 1600 (PC3 12800)
  • CAS latencyCL11
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • Memory rank1Rx4
  • ECC registered design protects data integrity in servers
  • 8GB DDR3 1600 CL11 expands workstation memory capacity
  • 5V JEDEC standard voltage ensures broad server compatibility
  • Matches HP part numbers 664691001 676333B21 676490181 676812001 687462001
  • 240-pin RDIMM form factor fits registered memory slots

Server Memory Upgrade

This 8 GB DDR3 1600 ECC Registered RDIMM is built for workstations, servers, NAS systems and routers that require registered memory. It will not work in standard desktop computers and cannot be mixed with unbuffered modules.

JEDEC Compliant Build

The module follows JEDEC and RoHS standards with a 1.5 V operating voltage and CL11 latency. Its 240-pin form factor fits DDR3 registered DIMM slots, and the lack of a heat spreader keeps the profile low for dense server chassis.

Compatibility Check Required

Verify that your system accepts DDR3 1600 PC3-12800 registered ECC memory in a 1Rx4 configuration before ordering. This module replaces HP part numbers 664691001, 676333, 676490181, 676812001 and 687462001, but it will not function in platforms that only support unbuffered memory.

How it compares

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

Price $23.99
Cheaper than about 93% of the 6,523 comparable items (median $188.99).
Total capacity 8 GB
Lower than about 80% of the 6,064 comparable items (median 32 GB).
Price per GB $3.00 per GB
Cheaper than about 89% of the 6,064 comparable items (median $7.25 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number1R6D31R408 GB
Total capacity8 GB
Product type240-Pin DDR3 ECC RDIMM
Performance
Rated speedDDR3 1600 (PC3 12800)
Memory
CAS latencyCL11
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Heat spreaderNo
Power
Rated voltage1.5 V

Questions about this item

What speed and standard does the DDR3 1600 PC3-12800 CL11 module run at in practice?

It operates at 1600 MHz under the PC3-12800 JEDEC standard with a CAS latency of 11 cycles.

What physical slot and form factor does this 240-pin ECC Registered RDIMM require?

It fits a standard 240-pin DDR3 DIMM socket in a workstation, server, NAS or router that accepts registered memory.

How is the 1Rx4 registered DIMM installed, and what step do people often get wrong?

Align the notch with the slot key, press firmly until both clips lock, and do not mix it with unbuffered modules or use it in a desktop board.

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