G.Skill

G.Skill Flare X5 F5-6000J3038F32GX2-FX5

Expert rating8.2 / 10

Capacity:: 64GB (2x32GB Kit)
Speed:: 6000MHz (PC5-48000)
CAS Latency:: CL30
Heat Spreader:: Low-Profile (33mm)

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Manufacturer: G.Skill Last updated: September 14, 2026

G.Skill Flare X5 F5-6000J3038F32GX2-FX5 Review

Searching for the G.Skill Flare X5 F5-6000J3038F32GX2-FX5, a 64GB (2x32GB) DDR5-6000 CL30 low-profile kit? This fills the CL30 gap in G.Skill's Flare X5 line at the 64GB capacity tier, sitting below the CL36 Flare X5 64GB kit we already carry on latency while keeping the same low-profile, non-RGB, matte black design.

Straight answer: CL30 at 6000MHz gives noticeably tighter real-world latency than the CL36 kit at the same frequency and capacity, worth it if your board and CPU can hit CL30 stably at 64GB (check your motherboard's QVL, as CL30 stability at 32GB-per-module density is more platform-dependent than at 16GB). One honest caveat before you buy: we could not verify a retail listing carrying this exact part number string. The real, currently-selling CL30 64GB Flare X5 kit we found carries a very similar but not identical part number (F5-6000J3040G32GX2-FX5) with matching CL30-40-40-96 timings and 1.40V, the specs here reflect that verified kit, so double-check the exact part number on the box against what you're ordering.

Performance and Timings

CL30 at 6000MHz works out to roughly 10ns true latency, meaningfully tighter than the CL36 Flare X5 64GB kit's 12ns at the identical 6000MHz frequency and 32GB-per-module density. That gap is the entire reason to pick this kit over the CL36 version if both are in the same rough price range, same capacity, same AMD-recommended fabric-ratio frequency, less latency.

Compatibility

AMD EXPO is the primary marketed profile. 32GB-per-module density at CL30 asks more of a board's memory controller than 16GB-per-module CL30 kits (like the smaller Flare X5 CL30 32GB kit), so check your specific motherboard's QVL for this capacity and timing combination rather than assuming it'll hit CL30 out of the box on every AM5 or Intel board.

Comparison to Alternatives

This kit's direct sibling in our catalog is the G.Skill Flare X5 F5-6000J3636F32GX2-FX5, the same 64GB (2x32GB), 6000MHz, low-profile, non-RGB Flare X5 kit at the looser CL36 timing. If you need 64GB at 6000MHz and want the tightest timing G.Skill sells in this low-profile, non-RGB line, this CL30 kit is the pick; if you want to save some money and CL30 stability at this density worries you, the CL36 kit is the safer, more broadly validated choice.

Our verdict

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

Expert rating8.2 / 10

The tightest-timing, low-profile, non-RGB 64GB DDR5-6000 option we carry from G.Skill, a genuine upgrade over the CL36 sibling kit for AMD builds that can run CL30 stably at this capacity, with the caveat that we could not verify the exact requested part number at retail.

Best for

AMD Ryzen builds wanting 64GB at 6000MHz with the tightest latency G.Skill offers in a low-profile, non-RGB kit
Builds needing clearance under tall CPU air coolers (33mm low-profile heat spreader)
Buyers who already have the CL36 64GB Flare X5 kit's capacity needs but want a latency upgrade

Not for

Buyers on a tight budget, CL30 64GB kits carry a real price premium over CL36 at the same capacity
Systems where 32GB is genuinely enough (the CL36 or CL30 32GB Flare X5 kits cover that more cheaply)
Anyone who wants confirmed CL30 stability at 32GB-per-module density without checking their board's QVL first

Specifications

What these specs mean

Speed Score

8.3/10

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

Identity

Peak Bandwidth	96.0 GB/s
Brand	G.Skill
Part Number	F5-6000J3038F32GX2-FX5
Series	Flare X5

Memory

DDR Generation	DDR5
Capacity	64 GB
Speed	6000 MT/s
CAS Latency	30
Module Count	2
Voltage	1.40 V

Physical

RGB Lighting	No

Module and platform

RAM Segment	Desktop DDR5
Form Factor	Desktop DIMM
Platform Optimisation	AM5

Capacity

Capacity Per Module	32 GB

Speed and timings

True Latency	10.0 ns

Overclocking profile

XMP Support	Yes
XMP Version	XMP 3.0
EXPO Support	Yes

Silicon

ECC	No

Physical and lighting

Module Height	33 mm
Colour	Matte Black

Commercial

Warranty	Limited Lifetime

FAQs

What are the key specifications of the G.Skill Flare X5 F5-6000J3038F32GX2-FX5 (64GB 2x32GB Kit/DDR5 6000MHz/CL30/Low-Profile/No RGB Matte Black/AMD EXPO)?

Key specs for the G.Skill Flare X5 F5-6000J3038F32GX2-FX5: Capacity Per Module 32 GB, Capacity 64 GB, Speed 6000MHz (PC5-48000), OC Profile XMP 3.0 + EXPO, Voltage 1.40 V, DDR Generation DDR5.

Will the G.Skill Flare X5 F5-6000J3038F32GX2-FX5 (64GB 2x32GB Kit/DDR5 6000MHz/CL30/Low-Profile/No RGB Matte Black/AMD EXPO) work with my current setup?

The G.Skill Flare X5 F5-6000J3038F32GX2-FX5 (64GB 2x32GB Kit/DDR5 6000MHz/CL30/Low-Profile/No RGB Matte Black/AMD EXPO) 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 Flare X5 F5-6000J3038F32GX2-FX5 (64GB 2x32GB Kit/DDR5 6000MHz/CL30/Low-Profile/No RGB Matte Black/AMD EXPO) best suited to?

Best suited to: AMD Ryzen builds wanting 64GB at 6000MHz with the tightest latency G.Skill offers in a low-profile, non-RGB kit; Builds needing clearance under tall CPU air coolers (33mm low-profile heat spreader); Buyers who already have the CL36 64GB Flare X5 kit's capacity needs but want a latency upgrade.

What are the drawbacks of the G.Skill Flare X5 F5-6000J3038F32GX2-FX5 (64GB 2x32GB Kit/DDR5 6000MHz/CL30/Low-Profile/No RGB Matte Black/AMD EXPO)?

Not the best fit for: Buyers on a tight budget, CL30 64GB kits carry a real price premium over CL36 at the same capacity; Systems where 32GB is genuinely enough (the CL36 or CL30 32GB Flare X5 kits cover that more cheaply); Anyone who wants confirmed CL30 stability at 32GB-per-module density without checking their board's QVL first.