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G.SKILL

G.SKILL Aegis F4-2666C19S-16GIS 16GB DDR4 2666 CL19 desktop RAM

SKU CH-2994-NGDJP MPN F4-2666C19S-16GIS

16GB DDR4 2666 CL19 unbuffered DIMM for Intel and AMD desktops at 1.2V

  • Capacity16GB
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Timing19-19-19-43
  • Voltage1.20V
  • ECCNo
  • 16 GB capacity for smooth multitasking
  • DDR4 2666 speed for responsive gaming
  • CL19 latency for quick data access
  • 20 V operation for power efficiency
  • Compatible with listed Intel and AMD platforms

Capacity and Speed

This module provides 16GB of DDR4 memory rated at 2666 MT/s with a CAS latency of CL19. It operates at a standard 1.20V and uses timings of 19-19-19-43. The unbuffered, non-ECC design targets desktop builders who need a single high-density stick for gaming or general workloads.

Compatibility and Validation

The kit is validated for a wide range of current AMD and Intel chipsets including X399, TRX40, X570, B550 and Z790, Z690, Z590 DDR4 platforms. Hand-selected ICs and rigorous factory testing aim to ensure stability across these supported motherboards. Mixing this stick with other memory kits is not recommended and can cause system instability.

Installation and Common Issues

Installation follows the standard DIMM slot procedure for any DDR4 desktop board. The most frequent issue arises when users combine this module with dissimilar kits, which breaks the matched-set timing and leads to boot failures or errors. Running a single 16GB stick also limits the platform to single-channel bandwidth.

Highlights

  • 16 GB capacity for smooth multitasking
  • DDR4 2666 speed for responsive gaming
  • CL19 latency for quick data access
  • 20 V operation for power efficiency
  • Compatible with listed Intel and AMD platforms

Specifications

BrandG.SKILL
SeriesAegis
ModelF4-2666C19S-16GIS
Capacity16GB
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Timing19-19-19-43
Voltage1.20V
ECCNo
Buffered/RegisteredUnbuffered
ColorBlack / Red
FeaturesDDR4 memory designed for compatible Intel or AMD platforms.
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.
Usage in any manner inconsistent with manufacturer specifications, warnings, designs, or recommendations will result lower speeds, system instability, or damage to the system or its components.
Refer to the G.SKILL memory kit QVL on the G.SKILL website to check mot
Recommend UseAMD X399 / TRX40 / X570 / X470 / X370 / B550 / B450 / B350
Intel X299 / Z790 DDR4 / Z690 DDR4 / Z590 / Z490 / Z390 / Z370 / Z270 / Z170
Shipping weight0.06 kg
Package size171 × 71 × 13 mm

Questions about this item

Will the 16GB module require any replacement or maintenance over time?

No routine maintenance is needed; the unbuffered DDR4 stick has no moving parts and is rated for continuous operation at 1.20V.

What limit appears first when the memory runs at 2666 MT/s all day?

The CL19 19-19-19-43 timing at 1.20V sets the sustained throughput ceiling; the module does not support higher speeds or tighter latencies.

How much heat and noise does the 1.20V kit produce under constant load?

It runs silently with no fan; the low 1.20V voltage keeps thermal output minimal inside a normal desktop airflow.

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