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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

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Memory timings19-19-19-43
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • 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.

How it compares

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

Price $221.99
Pricier than about 70% of the 3,647 comparable items (median $90.99).
Total capacity 16 GB
Typical for this category: the median of 3,251 items is 16 GB.
Price per GB $13.87 per GB
Pricier than about 83% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameG.SKILL
Product lineAegis
Model nameF4-2666C19S-16GIS
Total capacity16 GB
Product colorBlack / Red
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
Memory timings19-19-19-43
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.2 V
Size & build
Shipping weight0.06 kg
Package size171 × 71 × 13 mm
Compatibility
Recommended forAMD X399 / TRX40 / X570 / X470 / X370 / B550 / B450 / B350
Intel X299 / Z790 DDR4 / Z690 DDR4 / Z590 / Z490 / Z390 / Z370 / Z270 / Z170

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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