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Eight green DDR4 UDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 64GB (8x8GB) DDR4 2933MHz CL21 1.2V 288-Pin UDIMM memory upgrade

SKU CH-B28J-4J8V6

A 64 GB DDR4 kit of eight 8 GB unbuffered UDIMMs running at 2933 MHz CL21 1.2 V, validated for SuperMicro workstations

  • Total capacity64 GB (8 × 8 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 64 GB kit (8 × 8 GB) scales multitasking headroom
  • DDR4 2933 MT/s CL21 keeps latency predictable
  • 20 V operation reduces power draw per module
  • 288-pin UDIMM form factor fits standard desktop slots
  • Validated for Supermicro 5039AD-I and C9X299-PGF workstations

SuperMicro Compatible DDR4 Kit

This 64GB kit contains eight 8GB DDR4 2933MHz UDIMM modules built for SuperMicro workstations and desktop systems. The non-ECC unbuffered design suits standard consumer and workstation boards that accept PC4-23400 memory. It targets users expanding capacity on supported SuperMicro platforms such as the 5039AD-I or C9X299-PGF.

Installing Eight UDIMM Modules

Installation follows standard UDIMM procedure: power down, open the chassis, align each module with the 288-pin slot and press until the latches click. The kit has no heat spreaders, so clearance is rarely an issue. The main risk is populating all slots on a board that limits speed or rank count when fully loaded, which can force the memory to run below 2933MHz.

DDR4 2933MHz Practical Limits

DDR4 2933MHz provides a fixed transfer rate of PC4-23400 with CL21 latency at 1.20V. Bandwidth and latency are bounded by the JEDEC specification for this speed grade; no higher frequency or tighter timing is guaranteed without manual tuning. Systems that only support lower DDR4 speeds will downclock the kit automatically.

How it compares

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

Price $438.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB (8 × 8 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $6.86 per GB
Cheaper than about 58% 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 nameNEMIX RAM
Product lineSuperMicro Server/Workstation Compatible Series Memory
Model nameSuperMicro DDR4 2933 MHz Non-ECC Unbuffered UDIMM
Part numberMD23400-818K8
Total capacity64 GB (8 × 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 items64 GB (8 × 8 GB) DDR4 2933 MHz PC4-23400 1Rx8 1.2 V CL21 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

How do I verify the 64GB kit is running at 2933MHz CL21 after installation?

Open Task Manager or BIOS and confirm the speed reads 2933MHz with CAS latency 21 across all eight slots.

What is included in the MD23400-818K8 package and what must be purchased separately?

The box contains eight 8GB DDR4 UDIMM modules; no extra cables, brackets or software are required.

Which capacity version should I choose for a SuperMicro C9X299-PGF workstation?

This 64GB (8×8GB) kit matches the board's eight DDR4 slots and 2933MHz specification.

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