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Two green DDR2 DIMMs with black chips, no heat spreaders

Computer Memory Solutions

Computer Memory Solutions CM256725300ECCREG2R4 4GB (2x2GB) DDR2 667 ECC Registered

SKU CH-7W01-3K6CE

4GB kit of two 2GB DDR2 667 ECC registered DIMMs for Dell PowerEdge 850 servers

  • Total capacity4 GB (2 × 2 GB)
  • Rated speedDDR2 667 (PC2 5300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL5
  • Memory timings5-5-5
  • Rated voltage1.8 V
  • 4GB kit (2x2GB) for Dell PowerEdge 850 servers
  • DDR2 667MHz CL5 timing for stable registered operation
  • ECC registered DIMMs protect data integrity in servers
  • 8V 240-pin DDR2 modules install in matched pairs
  • Major-brand chips backed by CMS lifetime warranty

Dell PowerEdge 850 Compatible Kit

This 4GB kit contains two 2GB registered ECC DIMMs built for the Dell PowerEdge 850 server. Each module runs at 667 MHz with CL5 timings and a 1.8V supply. The 240-pin DDR2 design matches the system’s memory slots exactly.

Suits Maintainers of Legacy Servers

Technicians restoring or expanding a PowerEdge 850 will find the correct speed, voltage and registered ECC specification in this pair. Buyers who need unbuffered modules or a different pin count cannot use this kit.

Registered ECC with 2Rx4 Organisation

The modules are registered ECC with a 2Rx4 rank structure, a requirement for the PowerEdge 850’s memory controller. Systems that accept only unbuffered non-ECC DIMMs will not post with these installed.

How it compares

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

Price $24.99
Cheaper than about 88% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB (2 × 2 GB)
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $6.25 per GB
Cheaper than about 63% of the 20,941 comparable items (median $8.19 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 nameComputer Memory Solutions
Model nameCM256725300ECCREG2R4
Total capacity4 GB (2 × 2 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 spreaderNo
Power
Rated voltage1.8 V
Compatibility
Compatible systemsDell Poweredge 850
In the box
Included items2 Memory RAM Sticks

Questions about this item

Should I buy this 2×2 GB kit or look for a 4 GB single module for my Dell PowerEdge 850?

The PowerEdge 850 requires modules to be installed in matched pairs, so the 2×2 GB kit is the correct way to add 4 GB.

What does the DDR2-667 (PC2-5300) rating mean for actual throughput in this server?

The modules run at 667 MHz with CL5 timing, delivering the standard PC2-5300 bandwidth for registered ECC DDR2 memory.

Will the registered ECC 240-pin DDR2 interface work at full speed in my PowerEdge 850?

Yes, the 240-pin registered ECC DDR2 design matches the PowerEdge 850 slots; if slower 533 MHz modules are also present the system will down-clock to 533 MHz.

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