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Four green DDR2 DIMMs with gold contacts, registered ECC

Computer Memory Solutions

Computer Memory Solutions CM512725300ECCREG2R4 16GB (4x4GB) DDR2 667 ECC Registered DIMM memory upgrade

SKU CH-3XB2-0ZHG8

A 16 GB kit of four 4 GB DDR2 667 MHz ECC registered DIMMs validated for Supermicro X7DCA and X7DCL server boards

  • Total capacity16 GB (4 × 4 GB)
  • Rated speedDDR2 667 (PC2 5300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL5
  • Memory timings5-5-5
  • Rated voltage1.8 V
  • 16 GB server kit for Supermicro X7DCA/X7DCL boards
  • ECC registered DDR2 667 protects data integrity
  • 240-pin 1.8 V DIMMs match factory slots
  • 4 × 4 GB modules enable dual-channel pairs
  • 48 GB max capacity supported by platform

Server DDR2 ECC Registered Kit

This 16 GB kit contains four 4 GB DDR2-667 registered ECC DIMMs built for the listed Supermicro X7DCA and X7DCL server boards. Each module runs at 1.8 V with CL5 5-5-5 timing and uses a 2Rx4 organisation on 240-pin connectors. The registered buffer and ECC logic help maintain data integrity in multi-socket server workloads.

Not for non-server platforms

Systems that require unbuffered non-ECC memory, a different DDR generation, or a pin count other than 240 cannot use these modules. Boards limited to single-rank DIMMs or to capacities below 4 GB per slot are also incompatible. Mixing x4 and x8 chips inside the same bank is not supported by the validated motherboards.

Installed in matched pairs

The Supermicro boards validated for this kit operate in dual-channel mode with three banks of two sockets each, so modules must be added in identical pairs to enable that bandwidth. The platform maximum is 48 GB across all six sockets, and a 64-bit operating system is required to address the full amount.

How it compares

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

Price $55.99
Cheaper than about 76% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (4 × 4 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $3.50 per GB
Cheaper than about 87% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM512725300ECCREG2R4
Total capacity16 GB (4 × 4 GB)
Product type240-Pin DDR2 SDRAM
Performance
Rated speedDDR2 667 (PC2 5300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL5
Memory timings5-5-5
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderBased on Current Inventory (If Required Please Contact)
Power
Rated voltage1.8 V
Compatibility
Compatible systemsSupermicro X7Dca-3, X7Dca-I, X7Dca-L, X7Dcl-3
In the box
Included items1 Memory RAM Stick

Questions about this item

Does the kit include four 4 GB modules or is it a single 16 GB stick?

The kit contains four 4 GB modules, giving a total of 16 GB.

Should I choose single-rank or dual-rank modules for the Supermicro X7DCA boards?

These modules are 2Rx4 dual-rank; the board accepts both ranks but they must not be mixed within the same bank.

What does the PC2-5300 rating mean for actual throughput in the server?

PC2-5300 indicates a peak transfer rate of 5300 MB/s at 667 MHz.

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