Samsung computer, ENERGY STAR certified
Samsung SM-T638U
10 GB slate/tablet computer.
Memory
10 GB
Typical electricity use
4.4 kWh/yr
NPU installed
Yes
Storage
eMMC
Of 94 certified slate/tablet business computers, 9 have a lower typical electricity use than the SM-T638U (4.4 kWh/yr).
Its certified typical electricity use of 4.4 kWh/yr costs about $0.57 a year at 13¢/kWh.
- Maker
- Samsung
- Model
- SM-T638U
- Type
- Slate/Tablet
- Memory
- 10 GB
- NPU installed
- Yes
- Storage
- eMMC
- Screen
- 10.1 in
- Battery
- 28.1 Wh
- Operating system
- Android 12.0
- Marketed as a workstation
- No
- Typical electricity use
- 4.4 kWh/yr
- Power in sleep
- 0.1 W
- Power at long idle
- 0.1 W
- Power when off
- 0.1 W
- On the market since
- Aug 2022
- ENERGY STAR certified
- 24 Sep 2025
Certified under the same record
The maker lists these as the same machine or a variant of it: SM-T630, Same as basic model except for model designation, SM-T636B, SM-T638B.
Source: ENERGY STAR certified business computers dataset, US EPA, record 4510196, data build 2026-09-29. Figures are as the maker certified them. How we use this data.
Other makers
Machines comparable to the SM-T638U
Certified business computers from other makers, same color class, within 20% of its speed.
| Model | Type | Processor | Memory | Typical electricity use |
|---|---|---|---|---|
| Lenovo TB336FU | Slate/Tablet | - | 8 GB | 11.1 kWh/yr |
| Acer N25H8*** | Slate/Tablet | - | 8 GB | 9.3 kWh/yr |
| GETAC ZX10 | Slate/Tablet | - | 8 GB | 16 kWh/yr |
| Lenovo TB330FU | Slate/Tablet | - | 8 GB | 6.1 kWh/yr |
| Lenovo TB311FU | Slate/Tablet | - | 8 GB | 4.8 kWh/yr |
| Lenovo TB352FU | Slate/Tablet | - | 8 GB | 7.4 kWh/yr |
Samsung
More Samsung business computers
| Model | Type | Processor | Memory | Typical electricity use |
|---|---|---|---|---|
| NP740VJK | Notebook | Intel Core 3 310 | 16 GB | 11.4 kWh/yr |
| SM-X940 | Slate/Tablet | - | 16 GB | 9.8 kWh/yr |
| SM-X848U | Slate/Tablet | - | 32 GB | 8.1 kWh/yr |
| NP960XRD | Notebook | Snapdragon X2 Elite X2E-88-100 | 32 GB | 14.8 kWh/yr |
| NP764BJG | Notebook | Intel / Intel(R) Core(TM) Ultra 7 355 | 32 GB | 9.2 kWh/yr |
| NP740VJG | Notebook | Intel / Intel(R) Core(TM) Ultra 7 355 | 32 GB | 8 kWh/yr |
| NP960UJG | Notebook | Intel / Intel(R) Core(TM) Ultra X7 358H | 64 GB | 11.1 kWh/yr |
| NP760XJG | Notebook | Intel / Intel(R) Core(TM) Ultra 7 355 | 32 GB | 14.4 kWh/yr |