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Four green DDR2 DIMMs with gold contacts and black chips

Computer Memory Solutions

Computer Memory Solutions 16GB (4x4GB) DDR2 3200 ECC Registered DIMM B48

SKU CH-MQ7Y-1RGRD

Four 4 GB DDR2 ECC registered DIMMs add 16 GB to an IBM Intellistation Z Pro 6223

  • Total capacity16 GB (4 × 4 GB)
  • Rated speedDDR2 400 (PC2 3200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL3
  • Memory timings3-3-3
  • Rated voltage1.8 V
  • 16 GB kit adds server-grade capacity
  • Registered ECC design protects data integrity
  • DDR2 400 MHz matches system specification
  • Four 4 GB modules fill available slots
  • Validated for IBM Intellistation Z Pro 6223

Targeted Server Upgrade

This 16GB kit contains four 4GB DDR2 registered DIMMs built for the IBM Intellistation Z Pro (6223-xxx). Each module runs at 400 MHz (PC2-3200) with CL3 timing at 1.8V. The registered design and ECC support match the workstation's Chipkill-capable memory architecture.

Compatibility Constraints

The system accepts only one dual-rank kit in the first bank; this 2Rx4 kit fills that role. Builders needing additional capacity must add single-rank modules in the second and third banks. Buyers who want more storage or non-ECC memory for consumer platforms should look elsewhere.

Dual-Rank Bank Rule

The motherboard permits a single dual-rank kit in the first bank only. Installing this 4 x 4GB kit there satisfies the 16GB maximum when paired with single-rank kits in the remaining banks.

How it compares

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

Price $30.99
Cheaper than about 85% 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 $1.94 per GB
Cheaper than about 94% 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 nameCM512723200ECCREG2R4
Total capacity16 GB (4 × 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 spreaderBased on Current Inventory (If Required Please Contact)
Power
Rated voltage1.8 V
Compatibility
Compatible systemsIbm Intellistation Z Pro (6223-Xxx)
In the box
Included items1 Memory RAM Stick

Questions about this item

Should I buy the 16GB kit or split it across the three banks of my Intellistation Z Pro 6223?

The system accepts only one dual-rank kit in the first bank. To reach 16GB, install one 8GB dual-rank kit in bank one and two single-rank 4GB kits in banks two and three.

What does the PC2-3200 rating deliver inside the Intellistation Z Pro?

The modules run at 400 MHz with CL3 timing, giving the rated PC2-3200 bandwidth when the platform memory controller operates at its native DDR2 400 speed.

How does the 240-pin DDR2 registered interface limit what I can install?

The registered 240-pin DDR2 DIMMs require the server chipset's registered buffer; they will not work in unbuffered desktop boards and the Intellistation caps dual-rank kits to the first bank only.

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