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Eight green DDR5 RDIMM sticks in a row, no heat spreaders

NEMIX RAM

NEMIX RAM 256GB (8x32GB) DDR5 6400MHz CL52 2Rx8 1.1V ECC RDIMM memory upgrade for SuperMicro SYS-222BT-HER

SKU CH-CF8S-6Y21Z

Eight 32 GB DDR5 ECC registered DIMMs at 6400 MHz CL52 and 1.1 V, built for the SuperMicro SYS-222BT-HER server

  • Total capacity256 GB (8 × 32 GB)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank2Rx8
  • 256 GB total capacity across eight 32 GB modules
  • DDR5 6400 MHz speed rated at CL52 latency
  • ECC registered design detects and corrects memory errors
  • 1 V operation lowers server power draw
  • Validated for SuperMicro BigTwin SYS-222BT-HER

System-specific DDR5 RDIMM kit

This 256 GB kit contains eight 32 GB DDR5 ECC RDIMM modules rated at 6400 MHz with CL52 latency and 1.10 V operation. It is built for the SuperMicro BigTwin SuperServer SYS-222BT-HER and uses 288-pin registered DIMMs with a 2Rx8 organisation.

Suited for SYS-222BT-HER memory expansion

The kit matches the validated specification for that platform, so administrators upgrading the SuperServer can populate all eight slots with a single part number. Builders targeting a different server or workstation should verify their own qualified-vendor list because registered ECC RDIMMs are not interchangeable across every platform.

6400 MHz DDR5 RDIMM speed

The 6400 MHz data rate is the decisive figure; the SuperServer's memory controller must support this frequency for the kit to run at its rated performance. If the platform caps memory at a lower speed the modules will downclock, so confirm the maximum supported DDR5 rate before purchasing.

How it compares

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

Price $9,168.99
Pricier than about 86% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (8 × 32 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $35.82 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR51200-328K8
Total capacity256 GB (8 × 32 GB)
Product type288-Pin DDR5 RDIMM
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB (8 × 32 GB) DDR5 6400 MHz PC5-51200 2Rx8 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Should I pick the 256 GB kit with eight 32 GB modules or a different capacity for the SuperMicro SYS-222BT-HER?

The kit provides 256 GB total across eight 32 GB RDIMMs, matching the SuperMicro SYS-222BT-HER supported configuration.

What does the 6400 MHz rating deliver once the modules are installed in the server?

The modules run at DDR5 6400 MHz (PC5-51200) with CL52 latency, giving the rated throughput when the platform enables that speed.

How does the 288-pin DDR5 RDIMM interface limit performance in this system?

The 288-pin registered DDR5 form factor is keyed for DDR5-only slots and the registered design adds one cycle of command buffering required by the server platform.

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