G.SKILL
G.SKILL Ripjaws DDR4 SO-DIMM Series DDR4 RAM 16GB (2x8GB) 2666MT/s CL19-19-19-43 1.20V Unbuffered Non-ECC Notebook/Laptop Memory SO-DIMM (F4-2666C19D-16GRS)
Bottom line: The G.SKILL Ripjaws DDR4 SO-DIMM Series DDR4 RAM 16GB: 16GB total from a matched 2x8GB kit, built to run together as a set; main trade-off: CL19-19-19-43 timings are loose next to faster DDR4 kits.
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Pros & Cons
Pros
- ✓ 16GB total from a matched 2x8GB kit, built to run together as a set
- ✓ Rated DDR4-2666 at 1.20V for laptop power budgets
- ✓ Standard 260-pin DDR4 SO-DIMM fits DDR4 notebook slots
- ✓ Includes JEDEC default profile, boots at SPD speed with default BIOS
- ✓ Validation list available via G.SKILL QVL and RAM Configurator tool
Cons
- ✗ CL19-19-19-43 timings are loose next to faster DDR4 kits
- ✗ 2666MT/s rating trails DDR4-3200 kits for newer laptops
- ✗ 8GB per module caps the kit at 16GB in a two-slot laptop
- ✗ Shouldn't be mixed with other kits; G.SKILL warns of instability
Manufacturer description
Give your laptop more room to work with the G.SKILL Ripjaws DDR4 SO-DIMM kit (F4-2666C19D-16GRS). This matched pair of 8GB modules adds up to 16GB of total memory. It is rated for DDR4-2666 at CL19-19-19-43 and 1.20V. Each module is a 260-pin, unbuffered, non-ECC DDR4 SO-DIMM made for laptops and notebooks. It fits the same slot type found in DDR4-era portables. Because you get two identical modules, a laptop with two memory slots can run them as a matched pair instead of mixing in a stick it already has. The kit includes a JEDEC default profile. On compatible hardware it boots at the JEDEC…
SpecPicks Verdict
SpecPicks scored G.SKILL Ripjaws DDR4 SO-DIMM Series DDR4 RAM 16GB (2x8GB) 2666MT/s… using a rating × review-volume × price-fit model applied to published specs and reviews across the memory & ram category. G.SKILL's memory & ram lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for memory & ram of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Will this G.SKILL Ripjaws kit fit my laptop?
It fits laptops that use DDR4 260-pin SO-DIMM slots and accept unbuffered, non-ECC memory. Check the G.SKILL QVL or RAM Configurator tool on the G.SKILL website to confirm your exact model is validated.
Will the memory run at 2666MT/s right away?
With default BIOS settings on compatible hardware, the kit boots at its JEDEC default SPD speed. The speed it actually runs at also depends on what your laptop's platform supports, up to the kit's DDR4-2666 CL19 rating.
Can I add this kit to the RAM already in my laptop?
G.SKILL advises against it. The two 8GB modules are sold as a matched kit designed to run together, and mixing them with other memory kits can cause stability issues or system failure. Replace the existing modules with this kit instead.
Does this work in a desktop PC or a DDR5 laptop?
No. These are 260-pin DDR4 SO-DIMMs for laptops and notebooks. They don't fit full-size desktop DIMM slots and aren't compatible with DDR5 or DDR3 SO-DIMM slots.
What voltage and timings does the F4-2666C19D-16GRS use, and is it ECC?
It runs at 1.20V with CL19-19-19-43 timings at DDR4-2666. It is unbuffered, non-ECC memory. Check the product listing or G.SKILL's website for current warranty terms.
Key Features
- G.SKILL Ripjaws DDR4 SO-DIMM Series DDR4 SO-DIMM Memory Kit, Model: F4-2666C19D-16GRS
- 16GB total capacity kit containing 2x8GB modules, rated for up to DDR4-2666 CL19-19-19-43 at 1.20V
- Non-ECC, DDR4 SO-DIMM, 260-pin, for Laptop/Notebook
- 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.
Full Specifications
| Brand | G.SKILL |
|---|---|
| Voltage | 1.2 volts |
| RAM Size | 16 GB |
| Model Name | Ripjaws DDR4 SO-DIMM |
| Form Factor | SO-DIMM |
| Memory Speed | 2666 mt_s |
| Model Number | F4-2666C19D-16GRS |
| Number of Pins | 260 |
| Mfr Part Number | F4-2666C19D-16GRS |
| Memory Generation | DDR4 |
| Compatible Devices | Laptop |
| Data Transfer Rate | 2666 MHz |
| Memory Form Factor | SODIMM |
| Additional Features | Plug & Play |
| Computer Memory Size | 16 GB |
| RAM Memory Technology | DDR4 |
| Column Address Strobe Latency | 19 |
Ready to buy?
G.SKILL Ripjaws DDR4 SO-DIMM Series DDR4 RAM 16GB (2x8GB) 2666MT/s CL19-19-19-43 1.20V Unbuffered Non-ECC Notebook/Laptop Memory SO-DIMM (F4-2666C19D-16GRS) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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