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Two green 240-pin DDR2 memory sticks, bare chips, no heat spreader

Computer Memory Solutions

Computer Memory Solutions 4GB (2x2GB) DDR2 3200 400MHz ECC Registered DIMM - B66

SKU CH-EMWX-KD0V0

Dual-channel 4 GB kit of registered DDR2-3200 memory validated for the IBM eServer xSeries 236

  • Total capacity4 GB (2 × 2 GB)
  • Rated speedDDR2 400 (PC2 3200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL3
  • Memory timings3-3-3
  • Rated voltage1.8 V
  • ECC registered design protects data integrity in server workloads
  • 400 MHz DDR2 speed matches IBM eServer xSeries 236 specifications
  • 240-pin registered DIMM form factor fits the 8841-xxx platform
  • Matched 2 x 2 GB kit enables dual-channel performance
  • Single-rank 1Rx4 organisation meets the system's 8-rank limit

Server-Specific DDR2 Memory Kit

This 4 GB kit contains two 2 GB registered DIMMs built for the IBM eServer xSeries 236 (8841-xxx). The modules are single-rank ECC registered DDR2 SDRAM designed exclusively for server platforms. Buyers upgrading workstations or consumer desktops cannot use this memory.

DDR2 400 MHz Interface Limits

The memory runs at DDR2-3200 (PC2-3200) with a 400 MHz clock and CL3 3-3-3 timing at 1.8 V. Registered buffering adds one cycle of latency and the platform supports a maximum of eight ranks across eight sockets. Systems requiring unbuffered or non-ECC modules will not accept this kit.

240-Pin Registered Build Quality

Each stick uses a 240-pin connector without a heat spreader, relying on server chassis airflow for cooling. The registered design places a register between the DRAM and the memory controller, reducing electrical load on the motherboard. Mixing these single-rank modules with dual-rank or Chipkill kits disables the Chipkill function.

How it compares

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

Price $38.99
Cheaper than about 81% 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 $9.75 per GB
Typical for this category: the median of 20,941 items is $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 nameCM256723200ECCREG1R4
Total capacity4 GB (2 × 2 GB)
Product type240-Pin DDR2 SDRAM
Performance
Rated speedDDR2 400 (PC2 3200)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL3
Memory timings3-3-3
ECC supportNo
Buffer typeRegistered
Memory rank1Rx4
Heat spreaderNo
Power
Rated voltage1.8 V
Compatibility
Compatible systemsIbm Eserver Xseries 236 (8841-Xxx)
In the box
Included items2 Memory RAM Sticks

Questions about this item

Should I buy the 4GB kit or look for a larger capacity for my xSeries 236?

The kit provides 4GB total across two 2GB modules. Your server supports up to 16GB across eight sockets, so add more identical kits later if you need more memory.

What does the PC2-3200 rating mean once the modules are installed in the xSeries 236?

PC2-3200 indicates a peak transfer rate of 3200 MB/s at 400 MHz. The server's memory controller will run the registered DIMMs at this speed with CL3 timing.

Is the 240-pin DDR2 interface compatible with my xSeries 236 (8841-xxx)?

Yes. The 240-pin DDR2 registered DIMMs match the xSeries 236 memory slots. The chipset accepts up to eight ranks, and each module in this kit is single-rank (1Rx4).

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