HP EliteBook 640 G10 review – has quiet fan, good upgradability, and long battery life
Temperatures and comfort, Battery Life
Max CPU load
In this test we use 100% on the CPU cores, monitoring their frequencies and chip temperature. The first column shows a computer’s reaction to a short load (2-10 seconds), the second column simulates a serious task (between 15 and 30 seconds), and the third column is a good indicator of how good the laptop is for long loads such as video rendering.
Average P-core frequency; Average E-core frequency; CPU temp.; Package Power
| Intel Core i5-1335U (15W TDP) | 0:02 – 0:10 sec | 0:15 – 0:30 sec | 10:00 – 15:00 min |
|---|---|---|---|
| HP EliteBook 640 G10 | 3.78 GHz @ 2.88 GHz @ 83°C @ 50W | 2.75 GHz @ 1.96 GHz @ 77°C @ 26W | 2.35 GHz @ 1.77 GHz @ 76°C @ 23W |
| Acer TravelMate P4 (TMP413-51) | 3.52 GHz @ 2.67 GHz @ 77°C @ 44W | 3.27 GHz @ 2.45 GHz @ 82°C @ 41W | 2.16 GHz @ 1.67 GHz @ 64°C @ 22W |
| HP EliteBook 650 G10 | 3.73 GHz @ 2.87 GHz @ 88°C @ 49W | 2.81 GHz @ 2.09 GHz @ 90°C @ 29W | 2.50 GHz @ 1.88 GHz @ 81°C @ 24W |
| HP 250 G10 | 3.33 GHz @ 2.46 GHz @ 73°C @ 40W | 3.08 GHz @ 2.23 GHz @ 85°C @ 35W | 2.11 GHz @ 1.76 GHz @ 76°C @ 22W |
| ASUS Vivobook 17 F1704 (X1704) | 3.10 GHz @ 2.14 GHz @ 71°C @ 30W | 3.09 GHz @ 2.16 GHz @ 89°C @ 30W | 1.97 GHz @ 1.67 GHz @ 70°C @ 18W |
| ASUS Vivobook 15 F1504 (X1504) | 2.99 GHz @ 2.07 GHz @ 66°C @ 28W | 2.94 GHz @ 2.07 GHz @ 81°C @ 28W | 2.02 GHz @ 1.68 GHz @ 75°C @ 18W |
| Acer Aspire 5 (A515-58M) | 2.05 GHz @ 2.74 GHz @ 61°C @ 47W | 1.81 GHz @ 2.54 GHz @ 64°C @ 40W | 1.22 GHz @ 2.23 GHz @ 61°C @ 28W |
| HP ProBook 440 G10 | 2.39 GHz @ 2.93 GHz @ 93°C @ 50W | 1.51 GHz @ 2.29 GHz @ 92°C @ 30W | 0.94 GHz @ 1.87 GHz @ 72°C @ 19W |
| HP ProBook 450 G10 | 3.41 GHz @ 2.79 GHz @ 94°C @ 48W | 2.80 GHz @ 2.17 GHz @ 94°C @ 31W | 1.87 GHz @ 2.04 GHz @ 81°C @ 23W |
| Acer Swift Go 16 (SFG16-71) | 3.29 GHz @ 2.46 GHz @ 65°C @ 45W | 3.06 GHz @ 2.37 GHz @ 71°C @ 42W | 1.80 GHz @ 1.98 GHz @ 61°C @ 28W |
| Lenovo ThinkBook 14s Yoga Gen 3 | 1.91 GHz @ 1.20 GHz @ 63°C @ 19W | 1.86 GHz @ 0.90 GHz @ 74°C @ 14W | 1.83 GHz @ 0.90 GHz @ 60°C @ 13W |
Here, the Core i5-1335U can show an impressive clock in short loads. The frequencies in prolonged periods of 100% processor stress are also very good, especially for a 14-inch device.
Comfort during full load
There are no dedicated power presets in the HP Power Manager app. This means you have to use the default Windows performance modes. Under serious CPU stress, the keyboard isn’t too hot to the touch and the fan is quiet. The laptop can be dead silent in idle or light usage if you deselect the “Fan always on while on AC Power” function in the BIOS. In short, this HP machine offers very good comfort under any kind of system stress.
Battery
Now, we conduct the battery tests with Windows Better performance setting turned on, screen brightness adjusted to 120 nits and all other programs turned off except for the one we are testing the notebook with. Our configuration is equipped with a 51.3Wh battery pack. It lasts for 12 hours and 30 minutes of Web browsing or 9 hours and 5 minutes of video playback. To achieve that, you have to select the “HP Optimized (Modern Standby)” power plan that can be found in the Control Panel’s Power Options sub-menu. Also, you have to apply the “Balanced” preset in the Windows “Power & Battery” menu. Make sure that the “Max DC Performance” option is turned off in the BIOS. If not, this will harm the battery life because the Turbo Boost Technology will be turned on even when the power adapter is not connected.
Brightness: 180 nits; Display Mode: SDR
Time to Full Discharge: Higher is Better
In order to simulate real-life conditions, we used our own script for automatic web browsing through over 70 websites.
Author: Nikolay Palaozov
Author: eng. Kroum NikolovHead of Engineering at LaptopMedia.com, inventor and innovator with 40+ years of experience in electronics and high technology.
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