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Two green DDR5 UDIMM sticks, no heat spreaders, 48 GB each

NEMIX RAM

NEMIX RAM 96GB (2x48GB) DDR5 4800 CL40 1.1V 288-Pin UDIMM ASRock Z790 PG Riptide

SKU CH-CKYX-322GX

96GB dual-channel DDR5 kit at 4800MHz CL40, 1.1V, 2Rx8, built for ASRock Z790 PG Riptide

  • Total capacity96 GB (2 × 48 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeUnbuffered
  • Rated voltage1.1 V
  • 96 GB capacity supports heavy multitasking and large datasets
  • 4800 MT/s DDR5 speed delivers high data throughput
  • CL40 latency at 1.1 V balances timing and power efficiency
  • 288-pin UDIMM form factor fits standard desktop DIMM slots
  • Validated for ASRock Z790 PG Riptide motherboard compatibility

ASRock Z790 PG Riptide DDR5 Kit

This 96 GB kit contains two 48 GB DDR5 4800 CL40 UDIMMs built for the ASRock Z790 PG Riptide motherboard. Modules run at 1.1 V and use 2Rx8 unbuffered non-ECC chips without a heat spreader. The 288-pin DIMMs install in standard desktop slots for immediate capacity expansion.

Suits single-board 96 GB upgrades.

Builders who need exactly 96 GB on this board can populate both slots with one purchase. Systems that require ECC error correction, registered modules, lower CAS latency, or higher DDR5 speeds must choose a different specification. The kit does not support quad-channel configurations beyond the two modules supplied.

4800 MT/s DDR5 288-pin UDIMM at 1.1 V

The decisive figure is the 4800 MT/s DDR5 rating combined with 1.1 V operation on a 288-pin unbuffered DIMM. This speed and voltage pair determines whether the memory controller on the target motherboard will train stably at the rated CL40 timing. Verify the board's qualified vendor list for this exact frequency before ordering.

How it compares

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

Price $1,327.99
Pricier than about 63% of the 21,161 comparable items (median $397.99).
Total capacity 96 GB (2 × 48 GB)
Higher than about 65% of the 20,941 comparable items (median 32 GB).
Price per GB $13.83 per GB
Pricier than about 60% 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 lineASRock Gaming Motherboard Compatible Series Memory
Model nameASRock DDR5 4800 MHz Non-ECC Unbuffered UDIMM
Part numberMD38400-4828K2
Total capacity96 GB (2 × 48 GB)
Product type288-Pin DDR5 UDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock
In the box
Included items96 GB (2 × 48 GB) DDR5 4800 MHz PC5-38400 2Rx8 1.1 V CL40 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

Will the 288-pin DDR5 UDIMM modules fit the four DIMM slots on the ASRock Z790 PG Riptide?

Yes, the kit uses the standard 288-pin DDR5 UDIMM form factor that matches the four slots on the ASRock Z790 PG Riptide motherboard.

What is the correct slot order when installing the two 48 GB modules on the ASRock Z790 PG Riptide?

Install the modules in the two slots of the same colour, usually DIMM_A2 and DIMM_B2, to run in dual-channel mode.

Does the lack of a heat spreader on these 48 GB modules mean they will need active airflow later?

The modules run at 1.1 V without a heat spreader; ensure the case provides steady airflow over the DIMM area to keep temperatures in check.

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