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Two red aluminium heatspreader DIMMs in a dual channel kit

G.SKILL

G.SKILL Flare X 16GB (2x8GB) DDR4 2400 CL15 desktop RAM F4-2400C15D-16GFXR

SKU CH-6ZXR-70CZP MPN F4-2400C15D-16GFXR

Dual-channel 16 GB DDR4 kit at 2400 MT/s CL15 with red aluminum heatspreaders, tested for AMD Ryzen platforms

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • ChipsetAMD X370 / B350 / A320
  • CAS latencyCL15
  • Memory timings15-15-15-39
  • Rated voltage1.2 V

Capacity 16GB (2 x 8GB)

Speed DDR4 2400 (PC4 19200)

CAS Latency CL15

  • Optimised for AMD Ryzen platforms with validated compatibility
  • Low-latency CL15 timing for responsive system performance
  • Aluminium heatspreader keeps modules cool under sustained loads
  • Dual-channel 16 GB kit enables full bandwidth utilisation
  • 20 V operation reduces power draw and heat

Designed for AMD Ryzen Platforms

This 16 GB dual channel kit uses two 8 GB DDR4 modules rated at 2400 MT/s with CL15 15-15-15-39 timings at 1.20 V. It is built specifically for AMD AM4 platforms from X370 and B350 through X570 and B550. The aluminum heatspreader helps maintain stable temperatures during extended workloads.

Ideal for Standard AM4 Builds

The kit suits mainstream Ryzen systems running dual channel memory on consumer chipsets such as B450, B550, X470 or X570. It also lists compatibility with Intel DDR4 platforms from Z170 to Z790. Systems requiring ECC, registered modules, quad channel configurations or speeds beyond 2400 MT/s should select a different product.

CL15 at 2400 MT/s Defines Fit

The decisive specification is the CL15 15-15-15-39 timing at DDR4 2400. If your motherboard and CPU combination can utilise this latency at this frequency the kit will deliver its rated performance. If the platform demands tighter timings, higher frequency or different voltage the kit will not match the requirement.

How it compares

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

Price $52.99
Cheaper than about 64% of the 3,647 comparable items (median $90.99).
Total capacity 16 GB (2 × 8 GB)
Typical for this category: the median of 3,251 items is 16 GB.
Price per GB $3.31 per GB
Cheaper than about 90% of the 3,251 comparable items (median $6.75 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameG.SKILL
Product lineFlare X (for AMD)
Model nameF4-2400C15D-16GFXR
Total capacity16 GB (2 × 8 GB)
Product colorRed
Performance
Rated speedDDR4 2400 (PC4 19200)
Processor
ChipsetAMD X370 / B350 / A320
Memory
CAS latencyCL15
Memory timings15-15-15-39
ECC supportNo
Buffer typeUnbuffered
Kit configurationDual Channel Kit
Heat spreaderYes
Power
Rated voltage1.2 V
Size & build
Shipping weight0.14 kg
Package size180 × 135 × 15 mm
Compatibility
Recommended forAMD X399 / X570 / X470 / X370 / B550 / B450/ B350 / A520
Intel Z790 DDR4 / Z690 DDR4 / Z590 / Z490 / Z390 / Z370 / Z270 / Z170

Other versions of this model

2 more in the same range

Questions about this item

Will this kit run at 2400 MHz on a B550 motherboard with a Ryzen processor?

Yes, the kit is validated for AMD B550 chipsets and will operate at its rated 2400 speed with compatible Ryzen CPUs.

Does the 1.20 V voltage require any BIOS adjustment on an AMD platform?

No, 1.20 V is the standard DDR4 voltage so the memory will boot at that level without manual changes.

Can I add a second 16 GB kit to reach 32 GB on a dual-channel board?

The manufacturer advises against mixing kits; for 32 GB use a single matched 32 GB kit instead.

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