G.SKILL Ripjaws S5 Series 48GB (2x24GB) DDR5 6400 RAM

Name: G.SKILL Ripjaws S5 Series 48GB (2x24GB) DDR5 6400
Brand: G.Skill
SKU: F5-6400J3239F24GX2-RS5K
Rating: 4.0 (65 reviews)

G.SKILL Ripjaws S5 Series 48GB (2x24GB) DDR5 6400MT/s CL32-39-39-102 1.35V (F5-6400J3239F24GX2-RS5K)

★★★★☆

(65 reviews)

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Ripjaws S5 Series, designed for Intel Z790 Series Chipset with 13th Gen Intel Core CPUs or newer
Brand: G.Skill, Series: RipJaws S5, Model: F5-6400J3239F24GX2-RS5K
48GB kit containing 2 x 24GB modules, DDR5-6400, 288-Pin, CAS Latency CL32 (32-39-39-102) at 1.35V (Intel XMP)
ECC: No, Dual Channel Kit, Recommended Use: High Performance or Gaming Memory
Memory kits will boot at the SPD speed at default BIOS settings with compatible hardware.
For memory kits with XMP, enable XMP profile in BIOS to reach the rated potential XMP overclock speed of the memory kit, subject to the use of compatible hardware.
Reaching the rated XMP overclock speed and system stability will depend on the compatibility and capability of the motherboard and CPU used.
Do not mix memory kits. Memory kits are sold in matched kits that are designed to run together as a set. Mixing memory kits will result in stability issues or system failure.

G.SKILL Ripjaws S5 Series 48GB (2x24GB) DDR5 6400 image 1

G.SKILL Ripjaws S5 Series 48GB (2x24GB) DDR5 6400 image 2

Specifications Overview

Model	F5-6400J3239F24GX2-RS5K
Release Date	June 2023 * First availability for purchase, it may not correspond to the actual market launch date.
Type	288-pin DDR5 DIMM
Speed	DDR5-6400 MHz
Size	48GB (2 x 24GB)
CAS Latency	32
Timing	32-39-39-102
First Word Latency	10 ns
Voltage	1.35 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
32	14.55	13.33	12.80	12.31	11.43	10.67	10.32	10.00	9.70	9.41	9.14	8.89	8.65	8.42
33	15.00	13.75	13.20	12.69	11.79	11.00	10.65	10.31	10.00	9.71	9.43	9.17	8.92	8.68
34	15.45	14.17	13.60	13.08	12.14	11.33	10.97	10.63	10.30	10.00	9.71	9.44	9.19	8.95
35	15.91	14.58	14.00	13.46	12.50	11.67	11.29	10.94	10.61	10.29	10.00	9.72	9.46	9.21
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.