Dell Latitude 3140 2-in-1 vs dynabook PORTEGE X30W-P
Official ENERGY STAR certified computers from Dell and dynabook, ranked in this category.
Affiliate disclosure: We earn a commission if you buy through links on this page, at no extra cost to you. It never affects our rankings, which come from the published scoring formula. As an Amazon Associate I earn from qualifying purchases. Learn more.
Best for: Official TEC 9 kWh, official sleep 0.4 W
Check price at AmazonBest for: Official TEC 9 kWh, official sleep 0.6 W
Check price at AmazonSpec-by-spec comparison
Green marks the better published figure. "Not listed" means the manufacturer doesn't publish it.
| Spec | Dell Latitude 3140 2-in-1 | dynabook PORTEGE X30W-P | Weight |
|---|---|---|---|
| Official TECThe official Typical Energy Consumption (TEC) of the certified configuration, in kWh, published on the ENERGY STAR Computers V9.0 record. Lower official TEC is a lower certified annual-energy figure. It is a laboratory result for the configuration shown, not a utility bill we measured. Official values outside the reference range are clamped at the range ends for scoring only; the official figure is still shown. | 9 kWh | 9 kWh | 45% |
| Official sleep powerThe official Sleep Mode power published on the ENERGY STAR record, in watts. Lower official sleep power means less certified power while the computer is in sleep. If the field is blank it is shown as Not listed. Official values outside the reference range are clamped for scoring only; the official figure is still shown. | 0.4 W | 0.6 W | 30% |
| Official short-idle powerThe official Short Idle power published on the ENERGY STAR record, in watts. Lower official short-idle power means less certified power in that idle test state. Official values outside the reference range are clamped for scoring only; the official figure is still shown. | 3.5 W | 2.9 W | 25% |
| Official ENERGY STAR unique ID | 4,012,741 | 4,675,634 | info |
| Official model name | P33T | PORTEGE X30W-P | info |
| Official model number | Latitude 3140 2-in-1 | PAC10* | info |
| Official product type | Notebook | Notebook | info |
| Official TEC | 9 kWh | 9 kWh | info |
| Official sleep mode power | 0.4 W | 0.6 W | info |
| Official short-idle power | 3.5 W | 2.9 W | info |
| Official long-idle power | 0.4 W | 0.6 W | info |
| Official off-mode power | 0.3 W | 0.2 W | info |
| Official system memory | 8 GB | 64 GB | info |
| Official CPU cores | 4 | 16 | info |
| Official processor brand | Intel | Intel | info |
| Official processor name | N200 | Core Ultra 7 | info |
| Official CPU base clock | 1 GHz | 2 GHz | info |
| Official storage technology | SDD | SSD | info |
| Official ENERGY STAR date certified | 2025-04-11T00:00:00.000 | 2026-07-23T00:00:00.000 | info |
| Official battery capacity | 53 Wh | 58 Wh | info |
| Official integrated display size | 11.6 in | 13.3 in | info |
| Official integrated display resolution | 1.05 MP | 2.3 MP | info |
| Official touch screen | Yes | Yes | info |
| Official 'marketed as a workstation' | No | No | info |
| Official external power supply rating | 65 W | 65 W | info |
| Official model number (as certified, including wildcards) | Not listed | PAC10* | info |
| BytePick score | 9.1/10 | 9.0/10 | 100% |
Where each one comes out ahead
Dell Latitude 3140 2-in-1
Better published figure on: Official sleep power.
What we like
- Official ENERGY STAR record lists a TEC of 9 kWh.
- Official ENERGY STAR record lists sleep-mode power of 0.4 W.
Watch out for
- Official TEC is a certified laboratory annual-energy figure for this configuration, not a utility bill we measured.
dynabook PORTEGE X30W-P
Better published figure on: Official short-idle power.
What we like
- Official ENERGY STAR record lists a TEC of 9 kWh.
- Official ENERGY STAR record lists sleep-mode power of 0.6 W.
Watch out for
- Official TEC is a certified laboratory annual-energy figure for this configuration, not a utility bill we measured.
Verdict
Both official ENERGY STAR records list 9 kWh TEC; compare official sleep power and official short-idle power. Official processor and official memory are shown as certified facts, not scored.
- Dell Latitude 3140 2-in-1: ENERGY STAR Certified Computers V9.0 (pd_id 4012741)
- Dell Latitude 3140 2-in-1: ENERGY STAR Product Finder (computers)
- dynabook PORTEGE X30W-P: ENERGY STAR Certified Computers V9.0 (pd_id 4675634)
- dynabook PORTEGE X30W-P: ENERGY STAR Product Finder (computers)
Related comparisons
LaptopsApple MacBook Air 13-inch (M4) vs HP Chromebook Plus 14 inchLaptopsDell Latitude 3140 vs Lenovo V15 G7 Q7XLaptopsDell Latitude 3140 vs Lenovo IdeaPad 1 15AMN7LaptopsDell Latitude 3140 vs Lenovo IdeaPad Slim 3 14Q7X11LaptopsAcer A315-24P vs Dell Latitude 3140 2-in-1LaptopsHP Chromebook x360 14 inch vs LG 15Z95U Full rankingMost energy-efficient laptops, ranked on official ENERGY STAR power figures TopicAll laptops