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Green circuit board with gold edge connector and black memory chips

OWC

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

SKU CH-3C2E-3TFPX

8GB DDR3 1600 ECC registered RDIMM for servers and workstations, matching Lenovo 03X4325 specifications

  • 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
  • DDR3 1600 speed with CL11 latency supports demanding workloads
  • 5 V operation matches JEDEC standard for broad compatibility
  • 240-pin RDIMM form factor fits workstation and server slots
  • 8 GB capacity extends system life for virtualization and NAS

Server ECC RDIMM Upgrade

This OWC module provides 8 GB of DDR3 ECC registered memory for workstations, servers, NAS systems and routers. It runs at 1600 MHz with CL11 latency and a 1.5 V supply. The single-rank 1Rx4 organisation uses 240-pin RDIMM form factor without a heat spreader.

Replaces Lenovo 03X4325

The part matches the exact specifications of Lenovo part number 03X4325 for direct replacement. It upgrades systems currently running lower-capacity or slower DDR3 registered DIMMs. The jump is worth it when ECC error correction and registered buffering are required for data integrity.

Build Integration Notes

This memory fits 240-pin DDR3 slots that support registered ECC operation. It cannot be mixed with unbuffered modules and will not work in standard desktop platforms. JEDEC and RoHS compliance ensures warranty-safe installation in qualified server chassis.

How it compares

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

Price $22.99
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 $2.87 per GB
Cheaper than about 90% 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

Will this 240-pin DDR3 ECC Registered RDIMM fit a standard server DIMM slot?

Yes — the module uses the industry-standard 240-pin DDR3 form factor and 1.5 V operation required by registered server slots.

What is the correct installation step for this 1Rx4 CL11 registered module that builders often miss?

Align the key notch with the slot, press straight down until both retention clips click, and never mix this registered DIMM with unbuffered memory.

When should the 8 GB DDR3 1600 module be replaced in a 24/7 server?

Replace it if ECC correctable-error counts rise steadily, the system logs uncorrectable memory errors, or the module fails a full memory diagnostic pass.

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