Overview
The Kingston FURY Beast KF556C40BBK4-128 is a 128GB DDR5 desktop memory kit designed for compatible systems that require high-capacity memory and support for DDR5 technology. The kit contains four 32GB memory modules with a 288-pin DIMM form factor and a black heat spreader design.
With support for Intel Extreme Memory Profiles (XMP) 3.0, this memory kit provides configurable performance profiles for compatible platforms. Its DDR5 architecture supports the memory requirements of high-performance desktop systems, including gaming computers and workstations.
Memory Performance and Technical Information
The kit is rated for a data transfer rate of 5600MT/s with primary timings of 40-40-40 at 1.25V when operating with the specified XMP profile. Its default JEDEC profile is DDR5-4800 at 1.1V, providing a standard operating configuration for compatible systems.
Each module uses a dual-rank x8 memory organization. On-die ECC is incorporated into the DDR5 memory architecture to support error detection and correction within the memory chips; this does not make the kit equivalent to system-level ECC memory.
Compatibility and Configuration
This kit is intended for desktop motherboards that support DDR5 unbuffered DIMMs and the required memory capacity. Before purchasing, verify that the motherboard and processor support four DDR5 memory modules and the intended total capacity.
The advertised 5600MT/s rate depends on platform support and memory configuration. The actual operating speed may vary according to the processor's memory controller, motherboard specifications, firmware settings, and the number of installed modules. Intel XMP 3.0 profile selection may be required to operate at the rated profile speed.
This is a non-ECC, unbuffered memory kit. It should not be selected as a substitute for registered memory or system-level ECC memory where those features are required.
Key Features
- 128GB total capacity: Four 32GB DDR5 memory modules supplied as a matched kit.
- DDR5-5600 performance: Rated data transfer rate of 5600MT/s with CL40-40-40 timings at 1.25V using the specified XMP profile.
- Intel XMP 3.0 support: Provides memory performance profiles for compatible platforms.
- 288-pin unbuffered DIMMs: Designed for compatible desktop DDR5 memory slots.
- Black heat spreaders: Provides a black finish with a module height of 34.9mm.
Applications
- Compatible desktop PCs requiring 128GB of DDR5 memory.
- Workstations handling memory-intensive applications and large datasets.
- High-performance desktop systems whose motherboard and processor support the four-module configuration.
DC Supplies Product Note
Because this is a four-module, 128GB kit, check the motherboard's supported memory capacity and four-DIMM configuration before ordering. Some platforms reduce supported memory speeds when all four slots are populated, so DDR5-5600 operation should be confirmed against the motherboard and processor specifications.
Specifications
| Brand | Kingston |
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| Manufacturer | Kingston Technology |
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| Product Series | Kingston FURY Beast |
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| Part Number / MPN | KF556C40BBK4-128 |
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| Product Type | Desktop DDR5 memory kit |
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| Total Capacity | 128GB |
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| Kit Configuration | 4 x 32GB |
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| Memory Technology | DDR5 SDRAM |
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| Rated Data Transfer Rate | 5600MT/s |
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| Memory Standard | DDR5-5600 / PC5-44800 |
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| CAS Latency | CL40 |
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| XMP Timings | 40-40-40 |
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| XMP Voltage | 1.25V |
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| Default JEDEC Profile | DDR5-4800, 40-39-39, 1.1V |
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| Additional XMP Profiles | DDR5-5200 CL40-40-40 at 1.25V; DDR5-4800 CL38-38-38 at 1.1V |
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| Form Factor | 288-pin DIMM |
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| Memory Organization | 2Rx8 per module |
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| Error Checking | On-die ECC |
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| System ECC Support | Non-ECC memory |
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| Signal Processing | Unbuffered |
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| Memory Profile Support | Intel XMP 3.0 |
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| Module Color | Black |
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| Module Height | 34.9mm, including heat spreader |
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| Operating Temperature | 0°C to +85°C |
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| Storage Temperature | -55°C to +100°C |
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Frequently Asked Questions
Is this a single 128GB memory module?
No. KF556C40BBK4-128 is a four-module kit containing four 32GB DIMMs, for a combined capacity of 128GB.
Will this memory work with any DDR5 motherboard?
No. The motherboard and processor must support DDR5 unbuffered DIMMs, the total capacity, and the intended four-module configuration. Check the platform's memory compatibility documentation before purchasing.
Does the memory run at 5600MT/s automatically?
Not necessarily. The default JEDEC profile is DDR5-4800. Achieving the rated DDR5-5600 profile may require enabling Intel XMP 3.0 in firmware on a compatible platform.
Is this suitable for a system that requires ECC memory?
This is non-ECC system memory with on-die ECC built into the DDR5 chips. On-die ECC does not replace system-level ECC functionality, so this kit is not a substitute for memory explicitly required to support system ECC.
Can I install only one or two modules from the kit?
The modules are supplied as a matched four-module kit. For the intended configuration and applicable kit warranty, follow Kingston's product guidance and the motherboard manufacturer's installation recommendations.
