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Two black rectangular DDR5 SO-DIMM modules side by side

Kingston Technology Corp.

Kingston Technology Corp. KF556S40IBK2-32 32GB (2x16GB) DDR5 5600 CL40 laptop RAM

SKU CH-RN8T-C3AGJ MPN KF556S40IBK2-32

32 GB dual-channel DDR5 SO-DIMM kit running at 5600 MT/s with CL40 latency

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • CAS latencyCL40
  • Memory timings40-40-40
  • Rated voltage1.1 V
  • Kit configurationDual Channel Kit
  • DDR5 5600 speed lifts bandwidth for demanding workloads
  • CL40 latency keeps response tight in games and apps
  • 32 GB dual-channel kit (2 x 16 GB) doubles throughput over single modules
  • 10 V operation reduces power draw and heat in thin laptops
  • 262-pin SO-DIMM form factor fits standard DDR5 laptop slots

32GB DDR5 SO-DIMM kit for laptops

This 32GB kit contains two 16GB DDR5 SO-DIMM modules rated at 5600 MT/s with CL40 timing. It operates at 1.10V and uses the standard 262-pin form factor for laptop memory slots. The dual-channel kit is designed for AMD and Intel platforms.

Suits owners of DDR5 laptops with two slots

The kit suits owners of DDR5 laptops that accept two SO-DIMM modules and can run at 5600 MT/s. Buyers whose laptops have only one memory slot cannot use both modules. Buyers who need lower latency or higher frequency should look at other specifications.

Speed rating DDR5 5600 (PC5 44800)

The decisive specification is the DDR5 5600 (PC5 44800) speed rating with CL40-40-40 timing at 1.10V. This determines whether the memory matches the laptop's supported data rate and timing requirements.

How it compares

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

Price $459.99
Pricier than about 90% of the 2,079 comparable items (median $70.99).
Total capacity 32 GB (2 × 16 GB)
Higher than about 80% of the 1,886 comparable items (median 16 GB).
Price per GB $14.37 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 numberKF556S40IBK2-32
Total capacity32 GB (2 × 16 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 weight0.04 kg
Package size178 × 99 × 3 mm
Compatibility
Recommended forAMD & Intel Compatible / AMD Ryzen Compatible / High Performance or Gaming Memory / Intel Compatible

Questions about this item

Does my laptop need a DDR5-compatible motherboard and a free 262-pin SO-DIMM slot to use this kit?

Yes, this memory is a 262-pin DDR5 SO-DIMM kit and requires a laptop with a DDR5 memory controller and an available SO-DIMM slot for each 16GB module.

If I keep my existing DDR5 4800 modules, will this 5600 kit downclock to match them?

Yes, DDR5 modules automatically negotiate a common speed, so the 5600 MT/s sticks will run at the lower 4800 MT/s when mixed with slower memory.

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

Open Task Manager or a tool like CPU-Z and confirm the memory speed shows 5600 MT/s and the CAS latency reads 40-40-40.

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