Business computersENERGY STAR certified
Lenovo ThinkPad X1 Carbon Gen 13
32 GB notebook computer, model number 21NS.
Memory
32 GB
Processor
Core Ultra 7 258V
Typical electricity use
13.9 kWh/yr
NPU installed
Yes
Of 980 certified notebook business computers, 545 have a lower typical electricity use than the ThinkPad X1 Carbon Gen 13 (13.9 kWh/yr).
Its certified typical electricity use of 13.9 kWh/yr costs about $1.81 a year at 13¢/kWh.
- Maker
- Lenovo
- Model
- ThinkPad X1 Carbon Gen 13
- Model number
- 21NS
- Type
- Notebook
- Processor
- Core Ultra 7 258V
- CPU cores
- 8
- Memory
- 32 GB
- NPU installed
- Yes
- Storage
- SDD
- Screen
- 14 in
- Battery
- 57 Wh
- Operating system
- Linux, Windows 11 Pro
- Marketed as a workstation
- No
- Typical electricity use
- 13.9 kWh/yr
- Power in sleep
- 0.5 W
- Power at long idle
- 0.5 W
- Power when off
- 0.2 W
- On the market since
- Nov 2024
- ENERGY STAR certified
- 23 Jun 2025
Certified under the same record
The maker lists these as the same machine or a variant of it: 21NT, 21NX, 21NY.
Source: ENERGY STAR certified business computers dataset, US EPA, record 4439180, data build 2026-09-29. Figures are as the maker certified them. How we use this data.
Other makers
Machines comparable to the ThinkPad X1 Carbon Gen 13
Certified business computers from other makers, same color class, within 20% of its speed.
| Model | Type | Processor | Memory | Typical electricity use |
|---|---|---|---|---|
| HP 16-af | Notebook | Core Ultra 7 | 32 GB | 14.2 kWh/yr |
| HP OmniBook 7 Laptop AI ENERGY STAR | Notebook | Intel Ultra 9 285H | 32 GB | 16.4 kWh/yr |
| Acer N25H6*** | Notebook | lntel� Come "Ultra 9 285H | 32 GB | 12.7 kWh/yr |
| LG 15Z80T*-* | Notebook | AMD Ryzen AI7 350W | 32 GB | 14.6 kWh/yr |
| HP Pavilion Aero Laptop 13 ENERGY STAR | Notebook | Ryzen 7 | 32 GB | 11.9 kWh/yr |
| Acer N25H5*** | Notebook | lntel� Come "Ultra 9 285H | 32 GB | 13.4 kWh/yr |
Lenovo
More Lenovo business computers
| Model | Type | Processor | Memory | Typical electricity use |
|---|---|---|---|---|
| Lenovo V15 G7 Q7X | Notebook | C110100 | 16 GB | 8.2 kWh/yr |
| IdeaPad Slim 3 15Q7X11 | Notebook | C110100 | 16 GB | 7.8 kWh/yr |
| IdeaPad Slim 3 14Q7X11 | Notebook | C110100 | 16 GB | 8.2 kWh/yr |
| ThinkCentre M75s Gen 6 | Desktop | Ryzen 7 | 64 GB | 50.5 kWh/yr |
| ThinkCentre M75t Gen 6 | Desktop | Ryzen 7 | 64 GB | 53 kWh/yr |
| Yoga 9 2-in-1 16N1X11 | Notebook | NVIDIA RTX Spark N1X (6144-core GPU, 20-core CPU) | 64 GB | 21.2 kWh/yr |
| ThinkCentre M75q Gen 6 | Desktop | Ryzen 7 | 64 GB | 36 kWh/yr |
| Yoga Pro 9 15N1X11 | Notebook | NVIDIA RTX Spark N1x (6144-core GPU, 20-core CPU) | 128 GB | 23.4 kWh/yr |