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Four green DDR3 DIMM sticks with gold contacts

Computer Memory Solutions

Computer Memory Solutions 16GB (4x4GB) DDR3 1333 ECC Registered DIMM Kit B128

SKU CH-RGZC-86G01

16 GB kit of four 4 GB DDR3 1333 ECC registered DIMMs for Supermicro X8 series motherboards

  • Total capacity16 GB (4 × 4 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL9
  • Memory timings9-9-9
  • Rated voltage1.5 V
  • 16 GB kit expands server capacity to the board limit
  • ECC registered design protects data integrity in critical workloads
  • DDR3-1333 CL9 timing matches Supermicro X8 specifications
  • 240-pin DIMM form factor fits the six registered slots
  • 5 V operation aligns with platform voltage requirements

Server-grade ECC registered kit

This 16 GB kit contains four 4 GB DDR3 registered DIMMs that run at 1333 MHz with CL9 timing and 1.5 V operation. Each module is dual-rank 2Rx4 and includes ECC for data-integrity protection in server workloads.

Suited for Supermicro X8 platforms

The memory is validated for Supermicro X8Sit-Hf, X8Siu-F and X8Sia-F motherboards that accept registered ECC DIMMs. Systems requiring unbuffered ECC UDIMMs, non-ECC modules or higher-speed DDR3 will not be compatible with this kit.

Capacity ceiling and headroom

The four-module kit populates four of the six available DIMM slots and delivers 16 GB total, leaving two slots free for expansion. The platform supports up to 32 GB of registered ECC memory, so the kit provides half the maximum registered capacity.

How it compares

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

Price $40.99
Cheaper than about 80% 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 $2.56 per GB
Cheaper than about 91% 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 nameCM5127210600ECCR2R4H
Total capacity16 GB (4 × 4 GB)
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3 1333 (PC3 10600)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL9
Memory timings9-9-9
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderBased on Current Inventory (If Required Please Contact)
Power
Rated voltage1.5 V
Compatibility
Compatible systemsSupermicro X8Sit-Hf, X8Siu-F, X8Sia-F Motherboard
In the box
Included items4 Memory RAM Sticks

Questions about this item

Does my Supermicro motherboard need to support registered ECC DDR3 memory for this kit to work?

Yes — the modules are 240-pin DDR3 1333 registered ECC DIMMs, so the board must accept registered ECC memory at that speed.

Can I mix these registered DIMMs with the unbuffered ECC UDIMMs already installed in my X8SIT-HF?

No — the board supports either 16 GB of ECC UDIMMs or 32 GB of registered ECC RDIMMs, but the two types cannot be mixed in the same system.

How can I confirm the kit is running at the correct 1333 MHz speed and CL9 timings after installation?

Check the BIOS memory information or a system utility such as CPU-Z; it should report DDR3-1333 (PC3-10600) with 9-9-9 timings at 1.5 V.

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