Kingston FURY Impact KF426S15IB/8
Expert rating7.5 / 10
- DDR Generation:
- DDR4
- Capacity:
- 8GB (1x8GB)
- Speed:
- 2666MT/s
- CAS Latency:
- CL15
- Form Factor:
- SODIMM (Laptop)
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Manufacturer: Kingston Last updated: 2026-09-12T18:05:04.000Z
Kingston FURY Impact KF426S15IB/8 Review
Kingston FURY Impact KF426S15IB/8 is a compact single 8GB DDR4-2666 CL15 SODIMM module for older or entry-level laptops that top out at 2666MHz, giving a tight CL15 latency at a modest, widely-compatible frequency.
Older business laptops and budget notebooks are often locked to 2666MHz by their memory controller no matter how fast a stick you install, this module matches that ceiling exactly, so you're not overpaying for headroom the system can't use.
Matched to Older Laptop Memory Controllers
Many 8th/9th-gen Intel mobile chipsets and entry AMD mobile platforms cap out around 2666MHz regardless of the module installed, making a 2666MHz-rated stick like this the cost-efficient match rather than paying for an unused 3200MHz ceiling.
Comparison to Alternatives
Against the Kingston FURY Impact KF432S20IB/16 (3200MHz, 16GB, single module), that stick is the pick for newer laptops with a faster memory controller and a need for more capacity; this KF426S15IB/8 suits older systems or as a light top-up alongside an existing 8GB module. Compared to the Kingston FURY Impact KF432S20IBK2/32 kit, this is the single-module, lower-capacity, lower-cost option for lighter laptop upgrades.
Our verdict
Reviewed by Burooj Alam. Rated by us, not by users.
Expert rating7.5 / 10
A sensible, low-cost match for older laptops whose memory controllers can't exceed 2666MHz anyway.
Best for
- Older business and budget laptops capped at 2666MHz
- Light memory top-ups
- Cost-conscious single-module upgrades
Not for
- Newer laptops supporting 3200MHz+
- Users needing 16GB+ in one module
- Desktop systems
Specifications
What these specs meanIdentity
| Peak Bandwidth | 21.3 GB/s |
|---|---|
| Brand | Kingston |
| Part Number | KF426S15IB/8 |
| Series | FURY Impact |
Memory
| DDR Generation | DDR4 |
|---|---|
| Capacity | 8 GB |
| Speed | 2666MT/s (PC4-21300) |
| CAS Latency | 15 |
| Module Count | 1 |
| Voltage | 1.2 V |
Physical
| Form Factor | 260-Pin SODIMM (Laptop) |
|---|---|
| RGB Lighting | No |
Module and platform
| RAM Segment | Laptop SODIMM |
|---|
Capacity
| Capacity Per Module | 8 GB |
|---|
Speed and timings
| True Latency | 11.3 ns |
|---|
Silicon
| Memory IC | Undisclosed |
|---|---|
| ECC | No |
Physical and lighting
| Colour | Black |
|---|
Commercial
| Warranty | Limited Lifetime |
|---|
FAQs
What are the key specifications of the Kingston FURY Impact KF426S15IB/8 (8GB Single Module/DDR4 SODIMM/2666MHz/CL15/Laptop Memory/Intel XMP 2.0)?
The Kingston FURY Impact KF426S15IB/8 (8GB Single Module/DDR4 SODIMM/2666MHz/CL15/Laptop Memory/Intel XMP 2.0) is a memory kit from Kingston. Key specs: DDR Generation DDR4, Capacity 8GB (1x8GB), Speed 2666MT/s (PC4-21300), CAS Latency 15, Module Count 1.
Will the Kingston FURY Impact KF426S15IB/8 (8GB Single Module/DDR4 SODIMM/2666MHz/CL15/Laptop Memory/Intel XMP 2.0) work with my current setup?
The Kingston FURY Impact KF426S15IB/8 (8GB Single Module/DDR4 SODIMM/2666MHz/CL15/Laptop Memory/Intel XMP 2.0) lists DDR Generation is DDR4. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits. Our upgrade checker at /upgrade can confirm compatibility for common combinations.
Who is the Kingston FURY Impact KF426S15IB/8 (8GB Single Module/DDR4 SODIMM/2666MHz/CL15/Laptop Memory/Intel XMP 2.0) best suited to?
Best suited to: Older business and budget laptops capped at 2666MHz; Light memory top-ups; Cost-conscious single-module upgrades.
What are the drawbacks of the Kingston FURY Impact KF426S15IB/8 (8GB Single Module/DDR4 SODIMM/2666MHz/CL15/Laptop Memory/Intel XMP 2.0)?
Not the best fit for: Newer laptops supporting 3200MHz+; Users needing 16GB+ in one module; Desktop systems.