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Four black DDR5 sticks with matte heat spreaders, 288 pin, 64GB each

G.SKILL

G.SKILL Flare X5 256GB (4 x 64GB) DDR5 6000 CL36 desktop RAM F5-6000J3644D64GX4-FX5

SKU CH-AJBZ-A945D MPN F5-6000J3644D64GX4-FX5

Four 64 GB modules deliver 256 GB of DDR5 6000 with CL36 timing and AMD EXPO support for Ryzen platforms

  • Capacity256GB (4 x 64GB)
  • Type288-Pin PC RAM
  • SpeedDDR5 6000 (PC5 48000)
  • CAS LatencyCL36
  • Timing36-44-44-96
  • Voltage1.25V
  • Massive 256 GB capacity from four 64 GB modules
  • DDR5 6000 speed with CL36 latency for responsive performance
  • AMD EXPO profile enables rated speeds on compatible Ryzen platforms
  • Low 1.25 V voltage reduces power draw and heat
  • Black heat spreader keeps modules cool during heavy workloads

High-capacity DDR5 kit

This 256GB kit contains four 64GB DDR5 modules rated at 6000 MT/s with CL36 timings. The kit operates at 1.25V and includes AMD EXPO profiles for automatic configuration on compatible platforms. Black heat spreaders cover each module for thermal management.

AMD platform builders

The kit targets Ryzen systems using 600-series, 800-series or newer chipsets such as B650, B850, X670 and X870. Users who need only 64GB total or who run Intel platforms should consider different kits. Mixing this kit with other memory is not supported and can cause instability.

288-pin DDR5 form factor

Each module uses the standard 288-pin desktop layout and runs as unbuffered, non-ECC memory. The motherboard must provide four DDR5 slots and support the 6000 MT/s data rate with EXPO to reach rated performance.

Highlights

  • Massive 256 GB capacity from four 64 GB modules
  • DDR5 6000 speed with CL36 latency for responsive performance
  • AMD EXPO profile enables rated speeds on compatible Ryzen platforms
  • Low 1.25 V voltage reduces power draw and heat
  • Black heat spreader keeps modules cool during heavy workloads

Specifications

BrandG.SKILL
SeriesFlare X5
ModelF5-6000J3644D64GX4-FX5
Capacity256GB (4 x 64GB)
Type288-Pin PC RAM
SpeedDDR5 6000 (PC5 48000)
CAS LatencyCL36
Timing36-44-44-96
Voltage1.25V
ECCNo
Buffered/RegisteredUnbuffered / Unregistered
Multi-channel KitDual Channel Kit
BIOS/Performance ProfileAMD EXPO
ColorBlack
Heat SpreaderYes
FeaturesExtreme performance DDR5 memory designed for gaming and PC enthusiasts
AMD EXPO Support
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.
Memory kits will boot at the SPD speed at default BIOS settings with compatible hardware.
For memory kits with AMD EXPO, enable AMD EXPO profile in BIOS to reach the rated potential XMP overclock speed of the memory kit, subject to the use of compatible hardware.
Reaching the rated AMD EXPO overclock speed and system stabilit
Recommend UseAMD 600 Series / AMD B650 / AMD B850 / AMD Ryzen Compatible / AMD X670 / AMD X870 / High Performance or Gaming Memory
LED ColorNone
Shipping weight0.20 kg
Package size217 × 142 × 20 mm

Questions about this item

Will this 256 GB kit work on an AMD B650 motherboard with a Ryzen CPU?

Yes, the kit is validated for AMD 600 Series, B650, X670, B850 and X870 platforms. Enable the AMD EXPO profile in BIOS to run at DDR5 6000 CL36 1.25 V.

Can I add a fifth 64 GB module later to increase capacity?

The kit is a matched four-module set rated for dual-channel operation. Adding another module would break the matched configuration and can cause instability.

What do the timing numbers 36-44-44-96 mean for real-world use?

They are the primary latencies: CAS latency 36, RAS-to-CAS delay 44, RAS precharge 44 and cycle time 96. Lower values give snappier response in gaming and heavy workloads.

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