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Two green DDR4 UDIMM sticks with black chips no heat spreader

NEMIX RAM

NEMIX RAM 16GB (2x8GB) DDR4 2933 CL21 1.2V UDIMM memory upgrade for Supermicro MBD-C9Z490-PG

SKU CH-H4EZ-BFYY5

16 GB DDR4 2933 CL21 UDIMM kit (2 × 8 GB) validated for Supermicro MBD-C9Z490-PG workstations

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 16 GB dual-channel kit boosts multitasking capacity
  • DDR4 2933 speed matches board spec for stable operation
  • CL21 latency at 1.2 V keeps power draw low
  • 288-pin UDIMM form factor fits Supermicro MBD-C9Z490-PG slots
  • Major-brand DRAM chips tested under load for reliability

Supermicro MBD-C9Z490-PG DDR4 kit

This 16GB kit contains two 8GB DDR4 UDIMM modules validated for the Supermicro MBD-C9Z490-PG motherboard. It targets builders upgrading that specific board with matched, tested memory. Buyers needing ECC error correction or registered buffering should look elsewhere, as this kit provides neither.

Two-slot unbuffered 288-pin DDR4 upgrade

The modules install directly into standard 288-pin DDR4 DIMM slots without additional cables or power connectors. Running at 1.2V, they draw minimal power from the motherboard and leave headroom for other components. The kit occupies two slots, so systems with only two slots will reach maximum capacity with this upgrade.

Low-voltage CL21 modules without heat spreaders

Operating at DDR4 2933 with CL21 latency and 1.2V, the sticks run cool enough to forego heat spreaders in normal airflow. No moving parts means silent operation. Power draw stays low thanks to the standard DDR4 voltage, keeping thermal load modest inside the chassis.

How it compares

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

Price $98.99
Cheaper than about 68% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (2 × 8 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $6.19 per GB
Cheaper than about 63% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineSuperMicro Server/Workstation Compatible Series Memory
Model nameSuperMicro DDR4 2933 MHz Non-ECC Unbuffered UDIMM
Part numberMD23400-818K2
Total capacity16 GB (2 × 8 GB)
Product type288-Pin DDR4 UDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL21
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Memory rank1Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSupermicro
In the box
Included items16 GB (2 × 8 GB) DDR4 2933 MHz PC4-23400 1Rx8 1.2 V CL21 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

Will the CL21 latency become a bottleneck during sustained workloads?

CL21 is the rated CAS latency for these DDR4 2933 modules; sustained throughput is determined by the memory controller and workload profile.

How much heat do the 1.20 V modules add to a chassis running continuously?

At 1.20 V these unbuffered UDIMMs draw standard DDR4 power and have no heat spreader, so case airflow handles the thermal load.

Which motherboard slot layout is required for the 288‑pin kit to work?

The kit installs in two standard 288‑pin DDR4 DIMM slots on the Supermicro MBD‑C9Z490‑PG board.

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