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Two black and red DDR4 DIMMs with low-profile heatspreaders

G.SKILL

G.SKILL Aegis F4-2666C19D-32GIS 32GB (2 x 16GB) DDR4 2666 desktop RAM

SKU CH-MJ0D-JP11D MPN F4-2666C19D-32GIS

Dual-channel 32 GB DDR4 kit running at 2666 MT/s with CL19 timing and 1.2 V operation

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Memory timings19-19-19-43
  • Rated voltage1.2 V
  • Buffer typeUnbuffered

Capacity 32GB (2 x 16GB)

Speed DDR4 2666 (PC4 21300)

CAS Latency CL19

  • 32GB dual-channel kit expands system capacity for demanding workloads
  • DDR4 2666 speed delivers high data bandwidth for responsive performance
  • CL19 19-19-19-43 timings reduce latency for smoother application operation
  • 20V operating voltage lowers power draw and heat output
  • Intel XMP 2.0 profile enables one-click overclocking on supported platforms

Capacity and Kit Layout

This G.SKILL Aegis kit provides 32GB of DDR4 memory in a matched pair of two 16GB modules. It is built for desktop systems that require dual-channel bandwidth for gaming or general workloads. The black and red heatspreader fits standard DIMM slots without extra clearance concerns.

DDR4 2666 Interface Limits

The modules run at DDR4 2666 (PC4 21300) with CL19 19-19-19-43 timings at 1.20V standard voltage. Intel XMP 2.0 is supported for one-click profile loading on compatible boards. Do not mix this kit with other memory sets; mismatched kits cause stability issues and prevent the rated speed from being reached.

Installation and Common Pitfalls

Insert both DIMMs into the motherboard slots designated for dual-channel operation, usually the same-coloured pair. Enable the XMP 2.0 profile in BIOS to reach DDR4 2666; otherwise the system defaults to a lower JEDEC speed. Using four modules from two separate kits often prevents the XMP profile from applying correctly.

How it compares

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

Price $177.99
Pricier than about 65% of the 3,647 comparable items (median $90.99).
Total capacity 32 GB (2 × 16 GB)
Higher than about 70% of the 3,251 comparable items (median 16 GB).
Price per GB $5.56 per GB
Cheaper than about 64% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameG.SKILL
Product lineAegis
Model nameF4-2666C19D-32GIS
Total capacity32 GB (2 × 16 GB)
Product type288-Pin PC RAM
Product colorBlack / Red
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
Memory timings19-19-19-43
ECC supportNo
Buffer typeUnbuffered
Kit configurationDual Channel Kit
Memory profilesIntel XMP 2.0
Power
Rated voltage1.2 V
Size & build
Shipping weight0.07 kg
Package size150 × 122 × 15 mm
Compatibility
Recommended forAMD X399 / TRX40 / X570 / X470 / X370 / B550 / B450 / B350
Intel X299 / Z790 DDR4 / Z690 DDR4 / Z590 / Z490 / Z390 / Z370 / Z270 / Z170

Other versions of this model

5 more in the same range

Questions about this item

Will this 32 GB kit work in a dual-channel motherboard with four slots?

Yes, the kit is a matched pair of 16 GB modules designed for dual-channel operation on 288-pin DDR4 motherboards.

Does the kit run at 2666 MHz automatically or do I need to enable a profile?

The modules run at standard JEDEC speeds by default; enable Intel XMP 2.0 in the BIOS to reach the rated 2666 MHz with timings of 19-19-19-43 at 1.20 V.

Is this memory compatible with my AMD B550 or Intel Z690 DDR4 board?

The kit is validated for AMD X399, TRX40, X570, X470, X370, B550, B450, B350 and Intel X299, Z790 DDR4, Z690 DDR4, Z590, Z490, Z390, Z370, Z270, Z170 platforms.

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