G.Skill

G.Skill Trident Z5 Neo RGB F5-6400J3039G16G 16GB DDR5-6400 CL30

Key Specs:: DDR5 / 16GB / 6400MT/s / CL30

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Manufacturer: G.Skill Last updated: 2026-09-14

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G.Skill Trident Z5 Neo RGB F5-6400J3039G16G 16GB DDR5-6400 CL30 Review

This single 16GB G.Skill Trident Z5 Neo RGB module runs DDR5-6400 at CL30

a step above the line's common 6000MT/s bin, worth knowing that AM5 boards typically drop to a slower 2:1 fabric ratio above 6000-6400MT/s even though the rated speed is higher.

Performance

CL30 at 6400MT/s computes to 9.4ns true latency, tighter on paper than the 10.0ns of G.Skill's 6000MT/s CL30 Neo RGB sticks, but on AM5 the 1:1 fabric ratio typically tops out around 6000-6400MT/s depending on the board and CPU sample, so real-world gains over a 6000MT/s CL30 kit can be modest.

Comparison to Alternatives

Against the G.Skill Trident Z5 Neo RGB F5-6000J3036G32G at the more common 6000MT/s CL30 bin, this 6400MT/s part suits AM5 builders who've confirmed their board holds the 1:1 ratio at this speed, and Intel builders who don't have that ratio ceiling at all.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Best for

Intel platforms without AM5's fabric-ratio ceiling
AM5 builds on boards confirmed to hold 1:1 timing at 6400MT/s

Not for

AM5 builds on unconfirmed boards, where 6000MT/s CL30 is the safer sweet spot
Buyers who won't verify EXPO stability at the higher rated speed

Specifications

What these specs mean

Speed Score

9.3/10

How fast this kit is among DDR5 kits, rated from its speed and latency.

Identity

Peak Bandwidth	51.2 GB/s
Brand	G.Skill
Part Number	F5-6400J3039G16G
Series	Trident Z5 Neo RGB

Memory

DDR Generation	DDR5
Capacity	16 GB
Speed	6400 MT/s
CAS Latency	30
Module Count	1

Physical

RGB Lighting	Yes

Module and platform

RAM Segment	Desktop DDR5
Form Factor	Desktop DIMM
Platform Optimisation	Neither

Capacity

Capacity Per Module	16 GB

Speed and timings

True Latency	9.4 ns

Overclocking profile

XMP Support	No
EXPO Support	Yes

Physical and lighting

Colour	Matte Black

FAQs

What are the key specifications of the G.Skill Trident Z5 Neo RGB F5-6400J3039G16G 16GB DDR5-6400 CL30?

Key specs for the G.Skill Trident Z5 Neo RGB F5-6400J3039G16G 16GB DDR5-6400 CL30: Capacity Per Module 16 GB, Capacity 16 GB, Speed 6400 MT/s, OC Profile EXPO, DDR Generation DDR5, Part Number F5-6400J3039G16G.

Will the G.Skill Trident Z5 Neo RGB F5-6400J3039G16G 16GB DDR5-6400 CL30 work with my current setup?

The G.Skill Trident Z5 Neo RGB F5-6400J3039G16G 16GB DDR5-6400 CL30 lists DDR Generation is DDR5. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits. Our upgrade checker at /upgrade can confirm compatibility for common combinations.

Who is the G.Skill Trident Z5 Neo RGB F5-6400J3039G16G 16GB DDR5-6400 CL30 best suited to?

Best suited to: Intel platforms without AM5's fabric-ratio ceiling; AM5 builds on boards confirmed to hold 1:1 timing at 6400MT/s.

What are the drawbacks of the G.Skill Trident Z5 Neo RGB F5-6400J3039G16G 16GB DDR5-6400 CL30?

Not the best fit for: AM5 builds on unconfirmed boards, where 6000MT/s CL30 is the safer sweet spot; Buyers who won't verify EXPO stability at the higher rated speed.