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Two black DDR5 SO-DIMM modules side by side

Kingston Technology Corp.

Kingston Technology Corp. KF556S40IBK2-64 64GB (2 x 32GB) DDR5 5600 CL40 laptop RAM

SKU CH-JD9M-FZHX6 MPN KF556S40IBK2-64

Dual-channel 64 GB DDR5 SO-DIMM kit running at 5600 MT/s with CL40 latency and 1.10 V operation

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • CAS latencyCL40
  • Memory timings40-40-40
  • Rated voltage1.1 V
  • Kit configurationDual Channel Kit
  • 64 GB dual-channel kit doubles laptop memory capacity
  • DDR5 5600 MT/s speed lifts data throughput versus DDR4
  • CL40 latency keeps response tight at high frequency
  • 10 V operation reduces power draw and heat
  • Plug N Play plus Intel XMP 3.0 profiles give flexible overclocking options

Kingston FURY Impact DDR5 64GB kit

This Kingston FURY Impact kit provides 64GB of DDR5 laptop memory in a dual-channel configuration of two 32GB modules. It runs at 5600MT/s with a CAS latency of CL40 and operates at 1.10V. The SO-DIMM format suits compatible notebooks and small form factor systems.

Installation uses standard 262-pin SO-DIMM slots

Insert each module firmly until the side clips lock automatically. Ensure the notebook supports DDR5 SO-DIMMs and the required voltage before fitting. The kit uses Plug N Play to apply its rated speed without manual BIOS changes. Intel XMP 3.0 profiles are also available for systems that support them.

Suits users needing maximum DDR5 capacity

This 64GB dual-rank kit fits creators and gamers who want high memory bandwidth in a compact machine. Buyers whose laptops only accept DDR4 or lower-density modules cannot use this product. Systems limited to single-channel layouts or speeds below 5600MT/s will not gain the full rated performance.

How it compares

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

Price $826.99
Pricier than about 92% of the 2,079 comparable items (median $70.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 91% of the 1,886 comparable items (median 16 GB).
Price per GB $12.92 per GB
Pricier than about 90% of the 1,886 comparable items (median $5.94 per GB).

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Specifications

Product
Brand nameKingston
Product lineFURY Impact
Part numberKF556S40IBK2-64
Total capacity64 GB (2 × 32 GB)
Product type262-Pin DDR5 SO-DIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Memory
CAS latencyCL40
Memory timings40-40-40
Kit configurationDual Channel Kit
Power
Rated voltage1.1 V
Size & build
Shipping weight0.45 kg
Package size152 × 102 × 3 mm
Compatibility
Recommended forAMD & Intel Compatible / AMD Ryzen Compatible / High Performance or Gaming Memory / Intel Compatible

Questions about this item

How do I verify the kit is running at 5600 MT/s with CL40 timing after installation?

Open Task Manager or CPU-Z and confirm the memory shows DDR5 5600 with 40-40-40 latency; enable Intel XMP 3.0 in BIOS if the speed reads lower.

What comes in the box and do I need any extra parts for a laptop upgrade?

The package contains two 32 GB 262-pin DDR5 SO-DIMM modules; no additional components are required for a compatible notebook slot.

Which capacity should I choose between the 16 GB, 32 GB and 64 GB kits for gaming and heavy multitasking?

The 64 GB dual-channel kit (2 x 32 GB) provides maximum headroom for gaming, rendering and multitasking workloads.

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