G.Skill
G.Skill F4-2666C19S-16GIS Aegis 16GB DDR4 2666 Desktop Memory
★★★★★
16GB DDR4
Unleash the Power of Your Gaming Rig G.Skill Aegis DDR4 memory is engineered to deliver the strength and performance your gaming system deserves. With its high stability and upgraded performance, Aegis is designed for the latest PC gaming platforms. Equip your gaming arsenal with Aegis DDR4 memor...
$139.99*
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✓ In Stock on Amazon.com
*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.
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Overview
Unleash the Power of Your Gaming Rig
G.Skill Aegis DDR4 memory is engineered to deliver the strength and performance your gaming system deserves. With its high stability and upgraded performance, Aegis is designed for the latest PC gaming platforms. Equip your gaming arsenal with Aegis DDR4 memory and experience smooth gameplay, whether you're into FPS, RTS, MOBA, or MMORPG titles.
Specifications:
- Brand: G.Skill
- Model: F4-2666C19S-16GIS
- Capacity: 16GB
- Type: DDR4 SDRAM
- Speed: DDR4 2666 (PC4 21300)
- Pins: 288-Pin
Key Features
G.SKILL AEGIS Series DDR4 U-DIMM Memory Kit, Model: F4-2666C19S-16GIS
16GB total capacity kit containing 1x16GB module, rated for up to DDR4-2666 CL19-19-19-43 at 1.20V
Non-ECC, DDR4 U-DIMM, 288-pin, for Desktop PC & Gaming
Includes JEDEC default profile
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.
Refer to G.SKILL memory QVL or RAM Configurator tool on the G.SKILL website for more details on validated motherboard and hardware.
Usage in any manner inconsistent with manufacturer specifications, warnings, designs, or recommendations will result in lower speeds, system instability, or damage to the system or its components.
Memory kits will boot at JEDEC default SPD speed at default BIOS settings with compatible hardware.
Specifications
Series
AEGIS Series
Memory Type
DDR4 U-DIMM
Capacity
16GB (1x16GB module)
Speed Rating
DDR4-2666
CAS Latency (CL)
19
Timing
19-19-19-43
Voltage
1.20V
Error Correction
Non-ECC
Pin Count
288-pin
Form Factor
U-DIMM
Application
Desktop PC & Gaming
Profile
JEDEC default
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View on Amazon →Pros & Cons
👍 Pros
- This memory kit provides a substantial 16GB total capacity with a single 16GB DDR4 module, ideal for system upgrades.
- Rated for DDR4-2666 speed, offering a noticeable performance improvement over slower memory modules.
- Features a CL19-19-19-43 timing at 1.20V, indicating standard latency for its speed class.
- Designed as Non-ECC, DDR4 U-DIMM with 288 pins, making it suitable for most modern desktop PCs and gaming systems.
- Includes a JEDEC default profile, ensuring broad compatibility and easy setup with compliant motherboards.
- Part of the G.SKILL AEGIS Series, a line known for its focus on reliable and stable performance for everyday use and gaming.
👎 Cons
- The single 16GB module configuration does not allow for dual-channel memory benefits unless another identical module is added.
- Mixing memory kits is explicitly warned against, which could limit future upgrade flexibility or cause instability if not followed.
- The CL19 latency is higher compared to some premium DDR4 modules, potentially impacting performance in very latency-sensitive applications.
- Users are advised to refer to G.SKILL's QVL or RAM Configurator, indicating that universal compatibility is not guaranteed without verification.
- Usage inconsistent with manufacturer specifications could lead to lower speeds, instability, or system damage, requiring careful installation.
Frequently Asked Questions
What is the capacity of this G.Skill memory kit?
This G.Skill Aegis memory kit has a total capacity of 16GB, provided by a single 16GB DDR4 module.
What is the speed rating of this DDR4 memory?
This memory kit is rated for a speed of DDR4-2666, offering efficient performance for desktop PCs and gaming.
What voltage does this RAM operate at?
The G.Skill F4-2666C19S-16GIS module operates at 1.20V, which is a standard voltage for DDR4 memory.
Is this memory compatible with all desktop motherboards?
While it includes a JEDEC default profile for broad compatibility, G.SKILL recommends referring to their memory QVL or RAM Configurator tool for specific motherboard validation.
Can I mix this 16GB module with other memory modules I already own?
G.SKILL explicitly warns against mixing memory kits, as it can lead to stability issues or system failure. It is designed to run as a matched set.
Is this memory suitable for gaming?
Yes, this Non-ECC, DDR4 U-DIMM, 288-pin memory kit is specifically indicated for use in Desktop PC & Gaming systems.
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