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Four green DDR2 ECC registered DIMMs with gold contacts

Computer Memory Solutions

Computer Memory Solutions 16GB (4x4GB) DDR2 667 ECC Registered DIMM B50

SKU CH-70PZ-H2GQ2

Four 4 GB DDR2 667 ECC registered DIMMs totalling 16 GB for HP ProLiant BL45p G2 servers

  • 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 ProLiant BL45p G2 servers
  • ECC registered DDR2 667 MHz protects data integrity
  • 240-pin DIMMs install in matched 4 GB modules
  • 8 V operation matches original server specification
  • CL5 5-5-5 timing tuned for registered memory

HP ProLiant BL45p G2 Server Memory

This 16 GB kit contains four 4 GB DDR2 667 MHz registered ECC DIMMs built for the HP ProLiant BL45p G2 server. The modules operate at 1.8 V with CL5 5-5-5 timings and use a 240-pin form factor. They are designed for mission-critical workloads that demand error correction and signal integrity.

Upgrade From Lower Capacity Or Non-ECC Modules

Replacing smaller or non-ECC DDR2 sticks with this registered kit adds error detection and supports the platform's maximum 64 GB limit across 16 sockets. The jump is worth it when applications require data integrity and the server populate all eight banks per processor node for optimal interleaving.

16 GB Registered ECC Capacity Headroom

Four dual-rank 2Rx4 modules deliver 16 GB and enable 4-way bank interleaving on each processor node. The kit scales toward the 64 GB ceiling but stops short of larger single-module densities. Workloads exceeding 16 GB per node will need higher-capacity registered DIMMs to continue scaling.

How it compares

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

Price $53.99
Cheaper than about 77% 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 $3.37 per GB
Cheaper than about 88% 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 Proliant Bl45P G2
In the box
Included items1 Memory RAM Stick

Questions about this item

Will the 240-Pin DDR2 DIMMs fit the HP/Compaq ProLiant BL45p G2 blade server memory slots?

Yes, these 240-Pin DDR2 SDRAM modules are designed for the BL45p G2 which accepts up to 64 GB across 16 sockets.

What is the correct installation order for the four 4 GB registered DIMMs to keep bank interleaving active?

Install the kit in decreasing capacity with the largest kits in the banks furthest from each processor; all four modules are 4 GB dual-rank so populate the farthest bank first.

When should the registered ECC modules be replaced if the server starts logging corrected memory errors?

Replace modules when the system management log shows a rising count of corrected ECC events, indicating the 1.8 V DDR2 chips are degrading.

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