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Two green 240-pin DDR2 registered DIMMs, no heat spreader

Computer Memory Solutions

Computer Memory Solutions 8GB (2x4GB) DDR2 400MHz ECC Registered DIMM B47

SKU CH-TRSV-FQ7G1

An 8 GB registered ECC DDR2 kit (2 × 4 GB) validated for IBM System x3850 8863 and 8864‑xxx servers

  • Total capacity8 GB (2 × 4 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 servers
  • DDR2 400 MHz speed matches IBM System x3850 8863 and 8864-xxx specs
  • 8 GB kit (2 x 4 GB) fills two 240-pin slots
  • 8 V operation meets PC2 3200 registered DIMM standard
  • CL3 3-3-3 timing delivers low-latency response for enterprise workloads

System-Specific Upgrade for IBM x3850

This 8 GB kit contains two 4 GB DDR2 registered DIMMs built for the IBM System x3850 models 8863 and 8864-xxx. It targets administrators who need to expand server memory with guaranteed compatibility. The modules are new and validated for these specific platforms only.

Verify Registered DDR2 Slots and Population Rules

Before ordering, confirm the server uses 240-pin DDR2 slots that accept registered ECC modules at 400 MHz (PC2-3200). Check the system documentation for maximum capacity per socket and the required population order across the four expansion-card sockets. The kit operates at 1.8 V with CL3 3-3-3 timing.

Replaces Slower or Smaller Registered DDR2 Modules

This kit upgrades from lower-capacity or slower registered DDR2 DIMMs when the workload demands more memory within the 64 GB system limit. The jump is worthwhile when current modules restrict virtualization density or database caching on the supported x3850 servers. It does not fit systems requiring unbuffered or newer DDR generations.

How it compares

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

Price $15.99
Cheaper than about 93% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB (2 × 4 GB)
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $2.00 per GB
Cheaper than about 93% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM512723200ECCREG2R4
Total capacity8 GB (2 × 4 GB)
Product type240-Pin DDR2 SDRAM
Performance
Rated speedDDR2 400 (PC2 3200)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL3
Memory timings3-3-3
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.8 V
Compatibility
Compatible systemsIBM System x3850 8863, 8864-xxx
In the box
Included items2 Memory RAM Sticks

Questions about this item

Does the kit contain only the two 4 GB modules or are any brackets or cables included?

The package contains exactly two 240-pin DDR2 registered DIMMs; no brackets, cables or additional hardware are supplied.

Should I choose the CL3 400 MHz kit or look for a different latency for the x3850 8863?

The x3850 8863 and 8864-xxx systems are qualified for this CL3 400 MHz registered ECC kit; a different latency is not required.

Will the 400 MHz rating run at that speed once installed in an x3850 8864?

The modules operate at DDR2 400 (PC2 3200) with CL3 timing when installed in the supported IBM System x3850 8864-xxx.

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