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Two green DDR4 DIMM sticks with black chips and gold contacts

SK hynix

SK hynix HMA451U6AFR8N-TF 8GB (2x4GB) DDR4-2133 CL15 desktop RAM

SKU CH-25EM-0NMA6 MPN HMA451U6AFR8N-TF

Two 4 GB unbuffered DDR4 DIMMs running at 2133 MT/s with CL15 latency and 1.20 V

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR4 2133 (PC4 17000)
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • 8 GB total capacity from two 4 GB modules
  • DDR4-2133 speed at PC4-17000 bandwidth
  • CL15 latency for responsive desktop performance
  • 20 V operation reduces system power draw
  • 288-pin unbuffered DIMMs fit standard desktop slots

8 GB dual-channel DDR4 kit

This SK hynix kit provides 8 GB of DDR4 desktop memory in two 4 GB modules. It runs at DDR4-2133 with a CAS latency of 15 and operates at 1.20 V. The unbuffered, non-ECC DIMMs are suited for standard desktop builds and upgrades.

Check 288-pin DDR4 slots and voltage

Verify that your motherboard has free 288-pin DDR4 slots and supports 1.20 V operation. The board must accept unbuffered, non-ECC modules at DDR4-2133. Confirm the maximum memory capacity and slot population rules in the motherboard manual before ordering.

Matched pair enables dual-channel mode

The two modules are packaged together as a matched set, allowing the memory controller to run in dual-channel mode when installed in the correct slots. This configuration can increase memory throughput compared with a single module of the same total capacity. No additional software or accessories are included.

How it compares

Measured against everything we stock in Desktop RAM, at today’s prices. Recalculated every night.

Price $45.99
Cheaper than about 68% of the 3,647 comparable items (median $90.99).
Total capacity 8 GB (2 × 4 GB)
Lower than about 60% of the 3,251 comparable items (median 16 GB).
Price per GB $5.75 per GB
Cheaper than about 62% of the 3,251 comparable items (median $6.75 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 nameHynix
Product lineDesktop Memory
Model nameHMA451U6AFR8N-TF
Total capacity8 GB (2 × 4 GB)
Performance
Rated speedDDR4 2133 (PC4 17000)
Memory
CAS latencyCL15
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.2 V

Questions about this item

Will these two 4 GB sticks fit a standard desktop motherboard?

Yes, each module is a 288-pin DIMM built for DDR4 desktop slots, so they install in any board that accepts DDR4 memory.

What do the CL15 and 2133 figures mean for everyday use?

CL15 is the CAS latency timing and 2133 MT/s is the data rate; together they set the module's baseline speed and response time at the standard 1.20 V.

Is any special configuration needed to run the kit at its rated speed?

The kit is rated for DDR4-2133 at CL15 using the standard 1.20 V; most motherboards will apply those settings automatically on first boot.

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