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Two black 288-pin DDR5 modules with low-profile 33mm matte heatspreaders

G.SKILL

G.SKILL F5-6400J3239G32GX2-RS5K 64GB DDR5 desktop RAM

SKU CH-AAE0-7B9WJ MPN F5-6400J3239G32GX2-RS5K

A 64GB dual-channel DDR5 kit with 6400 speed, CL32 timing and 33mm low-profile heatspreaders

  • Capacity64GB (2 x 32GB)
  • Type288-Pin PC RAM
  • SpeedDDR5 6400 (PC5 51200)
  • CAS LatencyCL32
  • Timing32-39-39-102
  • Voltage1.40V

Capacity 64GB (2 x 32GB)

Speed DDR5 6400 (PC5 51200)

CAS Latency|Color CL32|Black

  • High-speed DDR5 6400 performance with CL32 latency
  • 64 GB dual-channel kit for demanding workloads
  • 33 mm low-profile height fits large CPU coolers
  • Intel XMP 3.0 profile enables rated speed automatically
  • Red Dot Design Award 2022 recognised styling

Ripjaws S5 64GB DDR5 kit

This Ripjaws S5 kit delivers 64GB of DDR5 memory in a dual-channel 2 x 32GB configuration. It is built for DIY builders and PC enthusiasts who need high-speed desktop memory. The modules use hand-screened ICs validated for stability and compatibility. A matte black aluminium heatspreader keeps the memory running cool.

33mm low-profile heatspreader

The 33mm module height fits compact chassis and clears large CPU coolers without interference. Intel XMP 3.0 support lets the kit load its rated profile from the BIOS with a single setting. At default BIOS settings the memory boots at standard SPD speed. The Red Dot Design Award 2022 recognises the minimalist racing-stripe aesthetic.

CL32 6400MT/s at 1.40V

The kit runs at DDR5 6400 (PC5 51200) with timings of 32-39-39-102 and a CAS latency of CL32. Operation at the rated speed requires 1.40V, so the motherboard and CPU must support that voltage. Verify platform capability before purchase to ensure the memory reaches its specified performance.

Highlights

  • High-speed DDR5 6400 performance with CL32 latency
  • 64 GB dual-channel kit for demanding workloads
  • 33 mm low-profile height fits large CPU coolers
  • Intel XMP 3.0 profile enables rated speed automatically
  • Red Dot Design Award 2022 recognised styling

Specifications

BrandG.SKILL
SeriesRipjaws S5 Series
ModelF5-6400J3239G32GX2-RS5K
Capacity64GB (2 x 32GB)
Type288-Pin PC RAM
SpeedDDR5 6400 (PC5 51200)
CAS LatencyCL32
Timing32-39-39-102
Voltage1.40V
Multi-channel KitDual Channel Kit
BIOS/Performance ProfileIntel XMP 3.0
ColorBlack
Heat SpreaderYes
Features"Performance DDR5 memory designed for DIY and PC enthusiasts.
Featuring a 33mm Low-profile module height design
Intel XMP 3.0 Support.
The memory kit will boot at the SPD speed when BIOS settings are at default.
For best results, please use memory modules from the same memory kit only. Please do not install memory modules from different kits, as it may result in system stability issues.
Enable XMP profile in the BIOS to reach up to the rated XMP overclock speed of the memory kit.
Reaching the rated XMP overclock speed and system stability depends on the capability of the motherboard
Recommend UseIntel 700 Series
Shipping weight0.12 kg
Package size218 × 142 × 15 mm

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Will the 33mm low-profile heatspreader on this Ripjaws S5 kit need any thermal paste replacement over time?

The aluminum heatspreader is a passive component with no moving parts or thermal paste, so it does not require any maintenance or replacement during the life of the modules.

At the rated 1.40V and CL32-39-39-102 timings, what is the first limit reached during sustained heavy workloads?

The first limit is the 1.40V operating voltage; the modules are validated to run continuously at this level with the XMP 3.0 profile active.

How much heat and noise does the 64GB dual-channel kit produce when running all day at DDR5 6400?

The passive 33mm heatspreaders dissipate heat silently with zero noise, and power draw stays at the specified 1.40V level during continuous operation.

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