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Two green DDR2 DIMMs with gold contacts and black chips

Computer Memory Solutions

Computer Memory Solutions CM256723200ECCREG2R4 4GB (2×2GB) DDR2 400 Registered ECC memory upgrade

SKU CH-D6G0-W460S

Registered DDR2 400 ECC kit with two 2 GB modules for Dell PowerEdge SC1425 servers

  • Capacity4GB (2 x 2GB)
  • Type240-Pin DDR2 SDRAM
  • SpeedDDR2 400 (PC2 3200)
  • CAS LatencyCL3
  • Timing3-3-3
  • Voltage1.8V
  • 4GB kit for Dell PowerEdge SC1425 servers
  • Registered DDR2 400 MHz with CL3 timing
  • 240-pin ECC DIMMs for error correction
  • 8V operation reduces power draw
  • Dual-rank 2Rx4 configuration supports 8-rank limit

System-Specific DDR2 Kit

This 4 GB kit contains two 2 GB registered ECC DIMMs built for the Dell PowerEdge SC1425 server. Each module uses a 240-pin DDR2 interface running at 400 MHz with CL3 timing. The dual-rank design matches the platform requirement that additional memory be installed in pairs.

Sustained Load Behaviour

Registered buffering reduces electrical load on the memory controller during continuous server workloads. ECC circuitry detects and corrects single-bit errors without halting the system. Dual-rank organisation allows the chipset to interleave accesses across ranks for steadier throughput under prolonged demand.

Thermals Noise Power

Modules operate at the standard 1.8 V for DDR2 with no heat spreaders attached. Passive cooling relies on chassis airflow, so noise contribution is limited to the server fans already present. Power draw scales with the two populated slots and stays within the platform’s designed envelope.

Highlights

  • 4GB kit for Dell PowerEdge SC1425 servers
  • Registered DDR2 400 MHz with CL3 timing
  • 240-pin ECC DIMMs for error correction
  • 8V operation reduces power draw
  • Dual-rank 2Rx4 configuration supports 8-rank limit

Specifications

BrandComputer Memory Solutions
ModelCM256723200ECCREG2R4
Capacity4GB (2 x 2GB)
Type240-Pin DDR2 SDRAM
SpeedDDR2 400 (PC2 3200)
CAS LatencyCL3
Timing3-3-3
Voltage1.8V
ECCNo
Buffered/RegisteredRegistered
Rank2Rx4
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemDell Poweredge Sc1425 (1425Sc
Package Content2 Memory RAM Sticks

Questions about this item

How much heat and power does this 1.8V DDR2 registered kit draw when the server runs continuously?

The modules operate at 1.8 volts and use registered signalling to reduce electrical load on the memory controller, keeping heat output low enough for standard server airflow in the SC1425 chassis.

What must already be installed in the PowerEdge SC1425 for these 240-pin DIMMs to work?

The system needs a motherboard that accepts 240-pin DDR2 registered ECC memory and a BIOS that supports dual-rank 2Rx4 modules; the first slot can be filled singly, but any further memory must be added in matched pairs.

Will these CL3 400 MHz sticks run stably alongside any older PC2-3200 modules I keep in the SC1425?

Yes — all modules must run at the same 400 MHz speed and CL3 timing, so the memory controller will down-clock everything to the slowest common setting, preserving stability within the eight-rank limit of the chipset.

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