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Four green DDR2 DIMMs with gold contacts, 240-pin registered ECC modules

Computer Memory Solutions

Computer Memory Solutions CM512725300ECCREG2R4 16GB DDR2 667 ECC Registered DIMM

SKU CH-N53G-EHAN7

16GB DDR2-667 ECC Registered kit upgrades HP xw9400 workstations to 64GB maximum

  • 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 kit for HP xw9400 workstations
  • ECC registered design protects data integrity
  • DDR2-667 speed matches system specification
  • 240-pin DIMMs install in available sockets
  • Four 4 GB modules fill a memory bank

16GB DDR2 Registered Kit for HP xw9400

This 16GB kit contains four 4GB DDR2-667 ECC registered DIMMs built for the HP/Compaq Workstation xw9400. Each module runs at 1.8V with CL5 timing and uses a 240-pin interface. The registered design helps maintain signal integrity on the workstation’s eight memory sockets.

Suited for xw9400 upgrades only

Buyers restoring or expanding an HP xw9400 G2 workstation can fill up to four sockets per CPU to reach the 64GB system maximum. Systems that require unbuffered memory, non-ECC modules or a different DDR generation cannot use this kit. The 2Rx4 organisation also matches the platform’s registered requirements.

Straightforward DIMM installation

Modules seat into the 240-pin slots like standard registered DIMMs; align the notch and press until the latches click. Common issues include mixing registered with unbuffered sticks or populating sockets in the wrong bank order, which prevents the workstation from posting.

How it compares

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

Price $54.99
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 $3.44 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 systemsHp/Compaq Workstation Xw9400 G2
In the box
Included items1 Memory RAM Stick

Questions about this item

What system must I already own for this 16GB DDR2 667 ECC Registered kit to work?

It is validated for the HP/Compaq Workstation xw9400 G2 with eight total DIMM sockets and a 64GB maximum.

How will these 4GB 2Rx4 registered modules behave alongside older DDR2 5300 sticks I keep in the same workstation?

All sockets run at 667 MHz CL5; the registered design adds one cycle of buffering, so matching speed and latency keeps the platform stable.

How can I confirm the kit is running as intended after installation?

The BIOS memory screen should show 16GB detected at DDR2 667 with ECC active and registered status on all four modules.

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