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G.Skill F4-2133C15D-16GFXR 16GB Flare X DDR4 Memory — main product image
G.Skill F4-2133C15D-16GFXR 16GB Flare X DDR4 Memory
G.Skill F4-2133C15D-16GFXR 16GB Flare X DDR4 Memory
G.Skill F4-2133C15D-16GFXR 16GB Flare X DDR4 Memory
G.Skill

G.Skill F4-2133C15D-16GFXR 16GB Flare X DDR4 Memory

★★★★★4.4 (75 reviews)
58in

A Ryzen-optimized DDR4 dual-channel kit delivering 16GB at 2133MHz with low voltage and a striking red heat spreader.

$129.00*
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

The G.Skill Flare X Series F4-2133C15D-16GFXR is a 16GB DDR4 memory kit consisting of two 8GB modules configured for dual-channel operation. Built specifically for AMD Ryzen processors on AM4 motherboards, this kit has been designed and validated against X370, B350, and A320 chipsets to deliver hassle-free compatibility — a meaningful consideration given the memory sensitivity that early Ryzen platforms were known for. The CL15-15-15-35 timings at 1.2V represent stable, efficient operation without requiring manual BIOS adjustments.

Running at DDR4-2133 (PC4-17000), this kit targets users who prioritize reliability and compatibility over raw speed. The 1.2V ultra-low voltage keeps power draw and thermals in check, while the aluminum heat spreader in a distinctive red finish provides passive cooling and a visual accent that complements many AMD-themed builds. At 40mm module height, it fits under most CPU coolers, though particularly large tower coolers should be checked for clearance. For Ryzen system builders looking for dependable memory that works right out of the box, the Flare X series offers a straightforward, warranty-backed solution.

Key Features

DDR4-2133MHz (PC4-17000), 16GB (8GBx2), CL15-15-15-35, 1.2V, Unbuffered, non-ECC, dual channel, Ryzen optimized, red memory kit.

Designed and tested for AMD

Optimized compatibility with AMD X370, B350 and A320 chipset.

Compatibility: CPU AMD Ryzen (AM4). Module Height: 40mm / 1.58in. Weight: 45g

Stylish aluminum heat spreader design. 1.20V ultra low voltage. Limited Lifetime Warranty.

Specifications

Brand
G.Skill
Model
F4-2133C15D-16GFXR
Series
Flare X
Memory Type
DDR4
Capacity
16GB (8GB x 2)
Speed
2133MHz (PC4-17000)
CAS Latency
CL15-15-15-35
Voltage
1.2V
ECC
Non-ECC, Unbuffered
Channel
Dual Channel
Platform Compatibility
AMD Ryzen (AM4) — X370, B350, A320
Module Height
40mm (1.58 in)
Weight
45g
Heat Spreader
Aluminum (Red)
Warranty
Limited Lifetime

Pros & Cons

👍 Pros

  • Specifically designed and tested for AMD Ryzen AM4 platforms, reducing compatibility headaches.
  • 16GB dual-channel capacity handles everyday computing, gaming, and multitasking comfortably.
  • Ultra-low 1.2V operating voltage keeps power consumption and heat output minimal.
  • Aluminum heat spreader aids thermal dissipation and adds a clean red design accent.
  • Backed by G.Skill's limited lifetime warranty.

👎 Cons

  • 2133MHz is the baseline DDR4 speed, which is slower than higher-clocked kits available for Ryzen.
  • Not optimized or validated for Intel-based systems.
  • CL15 latency at 2133MHz offers no performance advantage over cheaper value RAM at the same speed.
  • Module height of 40mm may interfere with some large tower CPU coolers.

Frequently Asked Questions

This kit is designed and tested for AMD Ryzen processors on AM4 motherboards with X370, B350, and A320 chipsets.
The kit contains two 8GB DDR4 modules for a total of 16GB in a dual-channel configuration.
The timings are CL15-15-15-35 at 1.2V, which are standard for DDR4-2133 and ensure stable operation without manual tuning.
While DDR4-2133 is a standard specification that may physically work in Intel boards, this kit is specifically optimized and validated for AMD Ryzen platforms and is not guaranteed for Intel compatibility.
No, this is an unbuffered, non-ECC memory kit intended for consumer desktop systems, not server or workstation use.

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