Kingston Fury Beast 128GB (2x64GB) DDR5 5600 CL40 RAM

Kingston Fury Beast 128GB (2x64GB) DDR5 5600MT/s CL40 KF556C40BBK2-128

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Level up your machine’s performance with enhanced features like on-die ECC for better stability and dual 32-bit subchannels to boost efficiency; Kingston FURY Beast DDR5 memory brings the latest, cutting-edge technology for next-gen gaming platforms
Kingston FURY Beast DDR5 offers overclock specs for Intel XMP 3.0 and AMD EXPO with customisable profiles for speeds and timings to help you wring the most from your gaming experience, livestream at 4K+ or push animation and 3D rendering projects
Taking speed, capacity and reliability even further, DDR5 arrives with an arsenal of enhanced features, like on-die ECC (ODECC) for improved stability at extreme speeds, dual 32-bit subchannels for increased efficiency and an on-module power management integrated circuit (PMIC) to provide juice where it’s needed most.
Superior speed advancements, with double the banks from 16 to 32 and double the burst length from 8 to 16, take DDR5 memory, your gaming experience and your overall system applications to the next level of performance
Whether you’re pushing the limits in your gaming with the most extreme settings, live streaming at 4K+ or pushing large animation and 3D rendering, Kingston FURY Beast DDR5 memory is the level-up needed, while seamlessly bridging style and unleashing performance With options featuring Intel XMP 3.0 or AMD EXPO, two new DDR5 overclock specs that include customisable profiles for speeds and timings, Kingston FURY Beast DDR5 has your compatible overclock solutions covered.

Kingston Fury Beast 128GB (2x64GB) DDR5 5600 CL40 image 1

Kingston Fury Beast 128GB (2x64GB) DDR5 5600 CL40 image 2

Kingston Fury Beast 128GB (2x64GB) DDR5 5600 CL40 image 3

Kingston Fury Beast 128GB (2x64GB) DDR5 5600 CL40 image 4

Kingston Fury Beast 128GB (2x64GB) DDR5 5600 CL40 image 5

Kingston Fury Beast 128GB (2x64GB) DDR5 5600 CL40 image 6

Specifications Overview

Model	KF556C40BBK2-128
Release Date	May 2025 * First availability for purchase, it may not correspond to the actual market launch date.
Type	288-pin DDR5 DIMM
Speed	DDR5-5600 MHz
Size	128GB (2 x 64GB)
CAS Latency	40
Timing	40-40-40
First Word Latency	14.28 ns
Voltage	1.25 V
Heat Spreader	Yes
ECC Support	No
Color	Black

	Old Name	Current Name	Branding	Data Speed	Port
USB 2.0	USB 2.0	USB 2.0	Hi-Speed USB	480 Mbit/s	diverse
USB 3.0	USB 3.1 Gen 1	USB 3.2 Gen 1x1	SuperSpeed USB	5 Gbit/s	diverse
USB 3.1	USB 3.1 Gen 2	USB 3.2 Gen 2x1	SuperSpeed USB 10Gbps	10 Gbit/s	diverse
USB 3.2	USB 3.2 Gen 2x2	USB 4.0 Gen 2x2	USB4 20Gbps	20 Gbit/s	only USB-C
USB4	USB 4.0 Gen 3x2	USB4 1.0	USB4 40Gbps	40 Gbit/s	only USB-C
USB4v2	USB 4.0 Gen 4	USB4 2.0	USB4 80Gbps	80-120 Gbit/s	only USB-C

RAM First Word Latency Table (nanoseconds)

Latency is measured in nanoseconds, which is a combination of frequency and CAS. Both frequency increases and latency decreases result in better system performance (when latency is the same, always prefer higher frequency if possible).

Frequency (MT/s)

	4400	4800	5000	5200	5600	6000	6200	6400	6600	6800	7000	7200	7400	7600
36	16.36	15.00	14.40	13.85	12.86	12.00	11.61	11.25	10.91	10.59	10.29	10.00	9.73	9.47
37	16.82	15.42	14.80	14.23	13.21	12.33	11.94	11.56	11.21	10.88	10.57	10.28	10.00	9.74
38	17.27	15.83	15.20	14.62	13.57	12.67	12.26	11.88	11.52	11.18	10.86	10.56	10.27	10.00
39	17.73	16.25	15.60	15.00	13.93	13.00	12.58	12.19	11.82	11.47	11.14	10.83	10.54	10.26
40	18.18	16.67	16.00	15.38	14.29	13.33	12.90	12.50	12.12	11.76	11.43	11.11	10.81	10.53
41	18.64	17.08	16.40	15.77	14.64	13.67	13.23	12.81	12.42	12.06	11.71	11.39	11.08	10.79
42	19.09	17.50	16.80	16.15	15.00	14.00	13.55	13.13	12.73	12.35	12.00	11.67	11.35	11.05
43	19.55	17.92	17.20	16.54	15.36	14.33	13.87	13.44	13.03	12.65	12.29	11.94	11.62	11.32
44	20.00	18.33	17.60	16.92	15.71	14.67	14.19	13.75	13.33	12.94	12.57	12.22	11.89	11.58
45	20.45	18.75	18.00	17.31	16.07	15.00	14.52	14.06	13.64	13.24	12.86	12.50	12.16	11.84
46	20.91	19.17	18.40	17.69	16.43	15.33	14.84	14.38	13.94	13.53	13.14	12.78	12.43	12.11
47	21.36	19.58	18.80	18.08	16.79	15.67	15.16	14.69	14.24	13.82	13.43	13.06	12.70	12.37
48	21.82	20.00	19.20	18.46	17.14	16.00	15.48	15.00	14.55	14.12	13.71	13.33	12.97	12.63
49	22.27	20.42	19.60	18.85	17.50	16.33	15.81	15.31	14.85	14.41	14.00	13.61	13.24	12.89
50	22.73	20.83	20.00	19.23	17.86	16.67	16.13	15.63	15.15	14.71	14.29	13.89	13.51	13.16
51	23.18	21.25	20.40	19.62	18.21	17.00	16.45	15.94	15.45	15.00	14.57	14.17	13.78	13.42
52	23.64	21.67	20.80	20.00	18.57	17.33	16.77	16.25	15.76	15.29	14.86	14.44	14.05	13.68

CAS (clock cycles) Lower latency means faster memory.

Distribution of First Word Latencies for Similar RAM Modules

The histogram below shows the distribution of first word latencies (in nanoseconds) for all RAM modules of the same DDR type and frequency in our database. Each bar represents the number of modules that fall within a specific latency range. The highlighted bar indicates the latency of the currently selected RAM module.