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Green 240-pin DDR3L ECC registered RDIMM module, no heat spreader

OWC

OWC 8GB DDR3L 1600 CL11 1Rx4 ECC Registered RDIMM 1.35V memory upgrade

SKU CH-1HBG-39FDD

8GB DDR3L 1600 CL11 ECC registered RDIMM for Lenovo System x3550 M3 R2 servers

  • Total capacity8 GB
  • Rated speedDDR3L 1600 (PC3L 12800)
  • CAS latencyCL11
  • Rated voltage1.35 V
  • Buffer typeRegistered
  • Memory rank1Rx4

Capacity 8GB

  • ECC registered design protects data integrity in servers
  • DDR3L 1600 speed with CL11 latency boosts throughput
  • 35 V operation reduces power draw and heat
  • Single 8 GB 1Rx4 module simplifies capacity upgrades
  • Replaces Lenovo part numbers 00D5035 00D5036 46W0700 46W0771

Server-grade ECC RDIMM

This 8 GB DDR3L 1600 CL11 registered module is built for workstation and server boards that require error-correcting memory. It replaces Lenovo part numbers 00D5035, 00D5036, 46W0700 and 46W0771 in the System x3550 M3 R2. Standard desktop systems cannot use registered ECC DIMMs, so buyers needing ordinary PC memory should look elsewhere.

Verify registered ECC support

Before ordering, confirm your motherboard accepts 240-pin DDR3L registered ECC RDIMMs at 1.35 V and that it does not require unbuffered modules. Mixing registered and unbuffered DIMMs is not supported. Check the system manual for maximum capacity per slot and total population rules, as this module is a single 1Rx4 rank.

Low-voltage thermal profile

Operating at 1.35 V reduces power draw compared with standard DDR3, helping keep server chassis temperatures lower under load. The module has no heat spreader, so adequate airflow across the DIMM slots is required for stable operation. Registered buffering adds minimal latency while maintaining signal integrity in multi-DIMM configurations.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $22.99
Cheaper than about 89% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $2.87 per GB
Cheaper than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number1R6T31R408 GB
Total capacity8 GB
Product type240-Pin DDR3L ECC RDIMM
Performance
Rated speedDDR3L 1600 (PC3L 12800)
Memory
CAS latencyCL11
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Compatible systemsLenovo System x3550 M3 R2

Other versions of this model

5 more in the same range

Questions about this item

Does the module ship as a single 8 GB stick or do I need to buy anything else to install it?

The upgrade consists of one 8 GB DDR3L 1600 CL11 1Rx4 ECC Registered RDIMM. No additional components are required for installation in a compatible slot.

Should I choose this 8 GB 1Rx4 registered module or a different capacity for my Lenovo System x3550 M3 R2?

This 8 GB 1Rx4 registered DIMM matches Lenovo part numbers 00D5035, 00D5036, 46W0700 and 46W0771. Select the capacity that fits your server's maximum memory configuration and available slots.

What does the 1600 MHz PC3L-12800 rating mean once the module is running in the server?

The module operates at DDR3L 1600 with CAS latency 11 at 1.35 V, delivering PC3L-12800 bandwidth when the system memory controller runs at that speed.

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