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Green 240-pin DDR3 RDIMM module with black chips, no heat spreader

OWC

OWC 16GB DDR3 1333 ECC Registered RDIMM 2Rx4 240-pin 1.5V CL9

SKU CH-QM0R-G4X19

16 GB DDR3 ECC registered RDIMM running at 1333 MHz with CL9 latency and 1.5 V operation

  • Total capacity16 GB
  • Rated speedDDR3 1333 (PC3 10600)
  • CAS latencyCL9
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • Memory rank2Rx4
  • 16GB capacity lets servers handle larger workloads
  • DDR3 1333 speed matches PC3-10600 spec for reliable throughput
  • ECC registered design detects and corrects data errors
  • 2Rx4 dual-rank layout optimises signal integrity on 240-pin slots
  • 5V JEDEC-standard voltage ensures broad server compatibility

Server ECC RDIMM 16GB DDR3 1333

This 16GB registered DIMM is built for workstations and servers that require ECC error correction. It will not function in standard desktop computers and cannot be mixed with unbuffered modules. Buyers who need consumer desktop memory should look elsewhere.

240-pin JEDEC registered module

The stick uses a 240-pin DDR3 interface at 1.5V with CL9 latency and a 2Rx4 rank configuration. No heat spreader is fitted, so airflow in the chassis must handle cooling. Systems that demand unbuffered DIMMs or a different pin count cannot accept this part.

16GB PC3-10600 CL9 specification

Capacity, speed, voltage and latency are fixed at 16GB, DDR3 1333, 1.5V and CL9. The module is tested to meet JEDEC and RoHS standards as a direct replacement for the Supermicro MEM-DR316L-SL05-ER13 part number. Servers needing a different capacity, voltage or latency must choose another module.

How it compares

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

Price $44.99
Cheaper than about 86% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $2.81 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 number1R3D32R416 GB
Total capacity16 GB
Product type240-Pin DDR3 ECC RDIMM
Performance
Rated speedDDR3 1333 (PC3 10600)
Memory
CAS latencyCL9
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.5 V

Questions about this item

What DDR3 speed and CAS latency does this 16 GB RDIMM run at?

It operates at DDR3 1333 (PC3-10600) with CL9 latency, the standard JEDEC timing for this voltage and density.

What motherboard slot and keying does the 240-pin registered DIMM require?

A DDR3 240-pin RDIMM socket; the registered notch position prevents insertion into unbuffered desktop slots.

How do I install this ECC registered module and what common step is missed?

Power down, open the chassis, align the notch, press firmly until both latches click, then verify in BIOS that ECC and registered mode are active — many forget to enable ECC in firmware.

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