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Two black DDR5 modules with white heatspreaders and RGB light bars

G.SKILL

G.SKILL F5-8400J4052G24GX2-TZ5RK 48GB (2×24GB) DDR5 8400 CL40 desktop RAM

SKU CH-5A5Z-8WEA3 MPN F5-8400J4052G24GX2-TZ5RK

Dual-channel 48 GB DDR5 kit running at 8400 MT/s with CL40 timings and RGB lighting

  • Total capacity48 GB (2 × 24 GB)
  • Rated speedDDR5 8400 (PC5 67200)
  • CAS latencyCL40
  • Memory timings40-52-52-134
  • Rated voltage1.4 V
  • Kit configurationDual Channel Kit

Capacity 48GB (2 x 24GB)

Speed DDR5 8400 (PC5 67200)

CAS Latency CL40

Color Black

LED Color Rgb

  • 48 GB dual-channel kit for high-capacity workloads
  • DDR5 8400 speed enables ultra-fast data transfer
  • CL40 40-52-52-134 timings tuned for low latency
  • 40 V operation supports stable overclocking headroom
  • Intel XMP 3.0 profile simplifies one-click performance setup

High-Speed DDR5 Kit for Enthusiasts

This 48GB dual-channel kit pairs two 24GB modules rated at DDR5 8400 with CL40 timings. It targets builders using 14th Gen Intel Core processors on 700 Series chipsets who want maximum bandwidth for gaming and heavy multitasking. The 1.40V operating voltage and XMP 3.0 profile deliver validated high-frequency stability out of the box.

Matched Pair with Aluminium Heatspreaders

The two modules are factory-matched to run together at 40-52-52-134 timings without manual tuning. Each stick carries a black brushed-aluminium strip set into a matte white body that dissipates heat from the ICs. Customisable RGB lighting runs along the top bar and synchronises with motherboard software. Mixing this kit with other memory is not supported.

Sustained Load Stability at 1.40V

Hand-screened DDR5 ICs maintain the rated 8400 MT/s transfer rate during extended sessions rather than only in short bursts. The 1.40V supply and dual-texture heatspreaders keep thermals controlled when all threads stay saturated. XMP 3.0 applies the 40-52-52-134 profile automatically so the bandwidth holds steady under continuous compute or rendering workloads.

How it compares

Measured against everything we stock in Desktop RAM, at today’s prices. Recalculated every night.

Price $878.99
Pricier than about 90% of the 3,647 comparable items (median $90.99).
Total capacity 48 GB (2 × 24 GB)
Higher than about 85% of the 3,251 comparable items (median 16 GB).
Price per GB $18.31 per GB
Pricier than about 90% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameG.SKILL
Product lineTrident Z5 RGB Series
Model nameF5-8400J4052G24GX2-TZ5RK
Total capacity48 GB (2 × 24 GB)
Product type288-Pin PC RAM
Product colorBlack
Performance
Rated speedDDR5 8400 (PC5 67200)
Memory
CAS latencyCL40
Memory timings40-52-52-134
Kit configurationDual Channel Kit
Memory profilesIntel XMP 3.0
Heat spreaderYes
Power
Rated voltage1.4 V
Size & build
Shipping weight0.16 kg
Package size159 × 133 × 19 mm
Compatibility
Recommended forIntel 700 Series Chipset; 14th Gen Intel Core Desktop Processors
More details
LED lightingRGB

Other versions of this model

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Questions about this item

Will the 1.40 V required for DDR5 8400 CL40 become the first limit under sustained load?

The kit is rated at 1.40 V for the 8400 MT/s speed with 40-52-52-134 timings; sustained operation stays at this voltage unless the platform pushes higher.

How much heat and noise should I expect from the aluminum heatspreader during all-day use?

The black brushed-aluminum heatspreader passively cools the hand-screened ICs; it adds no fan noise and runs warm but within DDR5 thermal limits.

Which motherboard feature must I already have to run this dual-channel kit at its rated speed?

An Intel 700-series chipset board with an XMP 3.0-capable BIOS is needed to load the 8400 MT/s profile automatically.

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