Technical Snapshot

The G.Skill Ripjaws S5 DDR5 64GB (2x32GB) 6400MT/s DIMM AMD EXPO — F5-6400J3239G32GX2-RS5K is a high-performance DDR5 desktop memory kit with AMD EXPO overclocking support. Running at 6,400 MT/s with CL32-39-39-100 timings at 1.4V, it supports AMD EXPO profiles for one-click speed optimization in compatible BIOS. The kit provides 64GB (2x32GB) of DDR5 memory with a Aluminum heatspreader design. Backed by a Limited Lifetime warranty, targeting enthusiast PC builders, gamers, and content creators requiring high-bandwidth memory.

Use Case
Gaming, content creation, desktop computing
Compatibility
DDR5-compatible desktop motherboard
Category
DDR5 DIMM — G.Skill Ripjaws S5
G.SKILL Image not available
G.Skill RAM
G.Skill Ripjaws S5

Ripjaws S5 DDR5 64GB (2x32GB) 6400MT/s DIMM AMD EXPO — F5-6400J3239G32GX2-RS5K

DDR5 · DIMM · 6,400 MT/s · CL32-39-39-100 · 64GB (2x32GB)

Memory transfer rate in megatransfers per second. Higher MT/s provides more bandwidth for CPU-bound workloads.
Speed 6,400 MT/s
Total kit capacity across all modules. Dual-channel kits double memory bandwidth.
Capacity 64GB (2x32GB)
CAS latency and full timing chain. Lower CL means faster first-byte access time.
Timings CL32-39-39-100
Overclocking profile for one-click speed optimization in compatible BIOS. XMP for Intel, EXPO for AMD.
Profile AMD EXPO
MPNF5-6400J3239G32GX2-RS5K
EAN4713294233165
CategoryMemory
Contact for Price
Comparing memory? Open Comparison Tool →

Memory Specifications

Memory TypeDDR5
Form FactorDIMM
Total Capacity64GB (2x32GB)
Speed6,400 MT/s
TimingsCL32-39-39-100
Voltage1.4V
XMP/EXPO ProfileAMD EXPO
HeatspreaderAluminum
Module Height33.0 mm
WarrantyLimited Lifetime

Full Specifications

Data sourced from G.Skill product specifications
Memory
Product LineRipjaws S5
Memory TypeDDR5
Form FactorDIMM
Total Capacity64GB (2x32GB)
Module Count2
Module Capacity32GB
Speed6,400 MT/s
Timings & Voltage
TimingsCL32-39-39-100
Voltage1.4V
XMP/EXPO ProfileAMD EXPO
Design
HeatspreaderAluminum
ColorBlack
Module Height33.0 mm
Product
BrandG.Skill
MPNF5-6400J3239G32GX2-RS5K
EAN4713294233165
WarrantyLimited Lifetime
Physical
Package Dimensions22.0 x 14.5 x 1.5 cm

Support

G.Skill Memory Compatibility ToolCheck motherboard compatibility for this module
G.Skill Support →
G.Skill Ripjaws S5 DDR5 64GB (2x32GB) 6400MT/s DIMM AMD EXPO — F5-6400J3239G32GX2-RS5K DatasheetPDF · Technical specifications
G.Skill Support →
← Back to Memory Catalog

Related Products

G.Skill Ripjaws S5 DDR5 32GB (2x16GB) 5200MT/s DIMM AMD EXPO — F5-5200J2834F16GX2-RS5K
32GB · 5200 MT/s
View Product →
G.Skill Ripjaws S5 DDR5 32GB (2x16GB) 5200MT/s DIMM AMD EXPO — F5-5200J2834F16GX2-RS5W
32GB · 5200 MT/s
View Product →
Kingston FURY Beast DDR5 16GB 6400MT/s DIMM Intel XMP — KF564C32BB-16
Kingston · 16GB · 6400 MT/s
View Product →
ASUS ROG CROSSHAIR X870E HERO
Compatible AM5 DDR5 Motherboard
View Product →

Frequently Asked Questions

What motherboards are compatible with this memory?

The G.Skill Ripjaws S5 DDR5 64GB (2x32GB) 6400MT/s DIMM AMD EXPO — F5-6400J3239G32GX2-RS5K requires a DDR5-compatible motherboard. This kit uses AMD EXPO profiles, optimized for AMD AM5 platforms (X870E, X870, X670E, X670, B850, B650 chipsets). While physically compatible with Intel DDR5 boards, the EXPO profile may not activate on Intel — look for Intel XMP variants for Intel platforms. The memory will still work at JEDEC default speeds on any DDR5 board.

Do I need to enable AMD EXPO in BIOS?

Yes. Out of the box, DDR5 memory runs at JEDEC default speed (typically 4800 MT/s). To achieve the rated 6,400 MT/s with CL32-39-39-100 timings, enable AMD EXPO in your motherboard BIOS. This is a one-click setting in the memory overclocking section.

Does this kit run in dual-channel mode?

Yes, the G.Skill Ripjaws S5 DDR5 64GB (2x32GB) 6400MT/s DIMM AMD EXPO — F5-6400J3239G32GX2-RS5K includes 2 modules which enable dual-channel mode when installed in the correct DIMM slots (typically A2+B2 or slots 2+4). Dual-channel doubles memory bandwidth compared to single-channel configuration. Check your motherboard manual for optimal slot placement.

Does this memory have a heatspreader?

Yes, the G.Skill Ripjaws S5 DDR5 64GB (2x32GB) 6400MT/s DIMM AMD EXPO — F5-6400J3239G32GX2-RS5K features a Aluminum heatspreader. The module height is 33.0 mm.

What warranty does this memory come with?

The G.Skill Ripjaws S5 DDR5 64GB (2x32GB) 6400MT/s DIMM AMD EXPO — F5-6400J3239G32GX2-RS5K comes with a Limited Lifetime warranty from G.Skill.

JSON-LD Structured Data — Product + FAQ + Breadcrumb
Product: G.Skill Ripjaws S5 DDR5 64GB (2x32GB) 6400MT/s DIMM AMD EXPO — F5-6400J3239G32GX2-RS5K
MPN: F5-6400J3239G32GX2-RS5K
Schemas: Product + BreadcrumbList + FAQPage
Properties: 13 additionalProperty entries
Related: 4 isRelatedTo links