| ENERGY STAR Partner |
| Lenovo Group Limited |
Lenovo Group Limited |
| Product Category |
| Computers |
Computers |
| Type |
| Notebook |
Notebook |
| Brand Name |
| Lenovo |
Lenovo |
| Model Name |
| 1) Lenovo Yoga S740-15IRH |
ThinkBook 14 2-in-1 G4 IML |
| Model Number |
| 1) 81NX |
21MX |
| Additional Model Information |
| 2) Lenovo IdeaPad S740-15IRH,2) 81NY,; 3) Lenovo IdeaPad S740-15IRH Touch,3) 81NW,; 4) Lenovo XiaoXinPro-15 2019,4) 81V2, |
N/A |
| Date Available On Market |
| August 16, 2019 |
February 19, 2024 |
| Date Certified |
| May 28, 2020 |
January 2, 2024 |
| Markets |
| United States, Switzerland, Taiwan, Japan, Canada |
United States, Switzerland, Taiwan, Japan, Canada |
| CB Model Identifier |
| ES_1037540_1 81NX_05292020112025_4636812 |
ES_1037540_21MX_01022024164803_2009426 |
| Meets ENERGY STAR Most Efficient 2024 Criteria |
| No |
No |
| Fuel Type |
| Notebook |
Notebook |
| Touch Screen |
| No |
Yes |
| Notebooks, Desktops, Integrated Computers, Slate/Tablets, Two-in-one Notebooks, and Portable All-in-ones Category for TEC (Typical Energy Consumption) Criteria |
| 2 |
2 |
| Category 2: Processor Brand |
| Intel |
Intel |
| Category 2: Processor Name |
| Core i9 |
Core Ultra 7 155U |
| Category 2: Operating System Name |
| Windows 10 |
Windows 11 |
| Category 2: Base Processor Speed Per Core (GHz) |
| 2 |
1.7 |
| Category 2: Physical CPU Cores (count) |
| 8 |
12 |
| Category 2: System Memory (GB) |
| 16 |
32 |
| Category 2: Default Low-power Mode |
| Sleep Mode |
ALPM |
| Category 2: Long Idle Power Used for Sleep Mode |
| No |
No |
| Category 2: Off Mode (watts) |
| 0 |
0.5 |
| Category 2: Sleep Mode (watts) |
| 1 |
0.9 |
| Category 2: Long Idle (watts) |
| 2 |
0.9 |
| Category 2: Short Idle (watts) |
| 6 |
5.4 |
| Category 2: Base TEC Allowance (kWh) |
| 14 |
14 |
| Category 2: Functional Adder Allowances (kWh) |
| 24 |
23.1 |
| Category 2: TEC of Model (kWh) |
| 20 |
18.8 |
| Ethernet Capability |
| No |
No |
| Sleep Mode Default Time Upon Shipment (min.) |
| 10 |
5 |
| Display Sleep Mode Default Time Upon Shipment (min.) |
| 10 |
3 |
| Date Qualified |
| May 28, 2020 |
January 2, 2024 |
