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G.SKILL Ripjaws S5 Series DDR5 RAM (Intel XMP 3.0) 96GB (2x48GB) Up to 6400MT/s CL32-39-39-102 1.35V Desktop Computer Memory U-DIMM - Matte Black (F5-6400J3239F48GX2-RS5K)
G.SKILL

G.SKILL Ripjaws S5 Series DDR5 RAM (Intel XMP 3.0) 96GB (2x48GB) Up to 6400MT/s CL32-39-39-102 1.35V Desktop Computer Memory U-DIMM - Matte Black (F5-6400J3239F48GX2-RS5K)

Bottom line: The G.SKILL Ripjaws S5 Series DDR5 RAM: 96GB from two 48GB DIMMs, more capacity than common 2x32GB kits; main trade-off: only an Intel XMP 3.0 profile; no AMD EXPO profile listed.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For desktop and laptop memory upgrades, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ 96GB from two 48GB DIMMs, more capacity than common 2x32GB kits
  • ✓ Rated DDR5-6400 at CL32-39-39-102 through one Intel XMP 3.0 profile
  • ✓ Reaches its rated XMP speed at 1.35V
  • ✓ JEDEC default profile boots safely before you enable XMP
  • ✓ Listed for Intel Z890, Z790 and B760, with a QVL and RAM Configurator

Cons

  • ✗ Only an Intel XMP 3.0 profile; no AMD EXPO profile listed
  • ✗ Validated platforms listed are Intel only: Z890, Z790 and B760
  • ✗ Boots at JEDEC speed; reaching 6400MT/s means overclocking in BIOS
  • ✗ Rated speed depends on your CPU memory controller and motherboard

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SpecPicks Verdict

SpecPicks scored G.SKILL Ripjaws S5 Series DDR5 RAM (Intel XMP 3.0) 96GB (2x48GB) Up… using a rating × review-volume × price-fit model applied to published specs and reviews across the memory (ram) category. G.SKILL's memory (ram) lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for memory (ram) of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • G.SKILL Ripjaws S5 Series DDR5 U-DIMM Memory Kit, Model: F5-6400J3239F48GX2-RS5K
  • 96GB total capacity kit containing 2x48GB modules, rated for up to DDR5-6400 CL32-39-39-102 at 1.35V
  • Non-ECC, DDR5 U-DIMM, 288-pin, for Desktop PC & Gaming
  • Includes JEDEC default profile, and Intel XMP 3.0 memory overclock profile
  • 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.
  • For Intel Z890, Intel Z790, Intel B760 platforms. Refer to G.SKILL memory QVL or RAM Configurator tool on the G.SKILL website for more details on validated motherboard and hardware.

Full Specifications

BrandG.SKILL
Voltage1.35 volts
RAM Size96 GB
Model NameRipjaws S5 Series
Unit Count2 Count
Form FactorDIMM
Memory Speed6400 mt_s
Model NumberF5-6400J3239F48GX2-RS5K
CompatibilityPC
Item Type NameDDR5-6400
Number of Pins288
Mfr Part NumberF5-6400J3239F48GX2-RS5K
Number of Items2
Memory GenerationDDR5
Compatible DevicesDesktop
Data Transfer Rate6400 megabits_per_second
Memory Form FactorUDIMM
Additional FeaturesHand-shielded memory
Computer Memory Size96 GB
Warranty DescriptionLimited Lifetime Manufacturer

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G.SKILL Ripjaws S5 Series DDR5 RAM (Intel XMP 3.0) 96GB (2x48GB) Up to 6400MT/s CL32-39-39-102 1.35V Desktop Computer Memory U-DIMM - Matte Black (F5-6400J3239F48GX2-RS5K) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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G.SKILL Ripjaws S5 Series DDR5 RAM (Intel XMP 3.0) 96GB (2x48GB) Up to 6400MT/s CL32-39-39-102 1.35V Desktop Computer Memory U-DIMM - Matte Black (F5-6400J3239F48GX2-RS5K)
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