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Green circuit board with gold edge connectors and black memory chips

OWC

OWC 8GB DDR3 1600 CL11 1Rx4 240-pin 1.5V ECC Registered RDIMM for Supermicro MEM?DR380L?SL04?ER16 server RAM

SKU CH-M7CK-KM2BX

8GB DDR3 1600 CL11 ECC registered RDIMM for Supermicro servers, 240-pin 1.5V

  • Total capacity8 GB
  • Rated speedDDR3 1600 (PC3 12800)
  • CAS latencyCL11
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • Memory rank1Rx4
  • ECC protection prevents data corruption in critical workloads
  • Registered design stabilises signal integrity for server reliability
  • 8GB capacity extends memory headroom for virtualisation
  • DDR3 1600 CL11 speed matches OEM specifications exactly
  • 240-pin 1.5V form factor fits Supermicro MEM?DR380L?SL04?ER16 slots

Server memory upgrade

This OWC module is an 8 GB DDR3 ECC registered DIMM built for workstations, servers, NAS systems and routers. It replaces the Supermicro MEM?DR380L?SL04?ER16 part number with identical specifications. The kit is JEDEC-standard and RoHS compliant.

Registered ECC requirement

The single deciding specification is the registered ECC design with a 1Rx4 rank layout at 1.5 V. This memory will not work in standard desktop computers and cannot be mixed with unbuffered modules. Buyers who need non-ECC or unregistered DIMMs must choose a different product.

240-pin DDR3 platform fit

The module plugs into a 240-pin DDR3 slot running at 1600 MHz (PC3-12800) with CL11 latency. It requires a platform that supports registered ECC DDR3 and frees you from sourcing the original Supermicro part. Systems without DDR3 registered ECC support cannot use this module.

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 does DDR3 1600 CL11 mean for actual server performance?

The module runs at 1600 MHz with a CAS latency of 11 cycles, delivering PC3-12800 bandwidth for registered ECC workloads.

What does the 240-pin DDR3 ECC registered interface limit in practice?

It fits only 240-pin DDR3 registered DIMM slots and cannot be mixed with unbuffered memory or used in standard desktop boards.

What physical clearance does the 1Rx4 240-pin RDIMM need?

The module uses a standard 240-pin DIMM height with no heat spreader, so it fits normal server DIMM sockets without extra vertical space.

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