Windows 10 vs 8.1 vs 8 vs 7 Performance—Battery Life

On July 29, 2015, Windows 10 was released to the general public. It is a high-end operating system with a lot of provision for graphics, universal apps, tasks, background processes, the new Edge browser, and many other features.

There are different upgrades in the form of 1903, 1909, 2004, and 20H2. During Windows 10 updates there is more power usage and a lot of battery drain.

Windows 10 vs Windows 7 Performance

In Nov 2015, a laptop that would give 2–3 hours of battery life reduced its performance to 1 hour after installing Windows 10. There is almost a reduction of 40 to 50% in the initial days.

The battery life of Windows 10 had the following benchmarks on different laptops.

In most of the above cases, battery life was better than Windows 8.1. According to this Reddit post (https://www.reddit.com/r/Windows10/comments/2wru9a/windows_7_vs_windows_10mobility_and_battery_life/), 8.1 had a 20 to 30% better battery period than 7. In that context, Windows 10 should be far better than 7 in 2019.

Gizmodo.com reported the following battery life benchmarks for Windows 10.

Compared to Windows 8.1, these were little better. So it should show better battery performance vs Windows 7.

Windows 7 vs Windows 8 Performance

Battery life is a point of comparison in the Windows 8.1 vs. Windows 7 battle when you don’t have a nearby power supply. With the improvement of hardware like CPUs, graphics cards, Ethernet cards, etc., you should see improved laptop standby time on battery.

Are you curious to know the speed benchmarks in the Windows 8 vs. Windows 7 performance battle? See this infographic and get an answer!

[Source: gadgetmix.com]

Windows 7 vs Windows 8.1 Performance

On the notebookreview.com forums, a user tested the battery life of Windows 7 vs Windows 8.1 on his Samsung laptop model NP900X3C.

The typical configuration looked like this.

Processor Support: Intel Core i5 Processor 3317U (1.7 GHz, 3 MB L3 Cache)
Chipset  Intel
RAM Size: 4 GB
           Type DDR3 (1600 MHz)
           Slots 1

Screen: 13.3″ SuperBright 400 nit HD+ LED Display (1,600 x 900), Anti-Reflective
Graphics Controller Intel HD Graphics 4000

Sound Controller High Definition Audio
Speakers: 3W Stereo Speaker (1.5 W x 2)

Windows 7 is more likely to consume more power than 8 and 8.1. This discrepancy is because of extra power management features of the latter. But a ThinkPad is said to provide only a half-life of 4 hours instead of the advertised 8 hours on 8.1.

Windows 7 vs 8.1

However, when the laptop was tested while running a movie, Windows 7 lasted an additional 1 hour and 6 minutes.

Windows 8 vs Windows 7

Earlier in Feb, 2012, at the end, “ITWorld” came up with a review on Windows 8 Consumer Preview battery life performance.

It tested a variety of laptops and compared Windows 7 SP1 & Windows 8 CP in terms of power consumption. For the test, they used three laptops. The results were impressive from Windows 8’s perspective when measured with the PCMark 7’s “Lightweight” test.

According to “TomsGuide,” the significant improvement in Windows 8 is its battery life compared to Windows 7 without a reduction in performance.

The battery life was tested in normal use, with a mix of editing documents, reading web pages, playing games, editing photos, and streaming videos in desktop mode.

The test didn’t use Metro apps to make a proper comparison with Windows 7.

Reasons behind inconclusive battery life

Windows 10 is infamous for installing numerous unnecessary apps. These can drain a lot of battery life if not stopped. They run in the background without any user involvement.

Since Windows 7 does not have any “apps” concept, you are better at saving precious battery time. But it is an outdated OS, which is less likely to have updates in the future. Old programs that install bloatware and adware can ruin the battery life.

Windows 7 was released in 2009, and most of the hardware bought at that time would have less performance compared to 2019. In recent times, we could see the emergence of eighth-generation i7 and i5 processors. In addition to that, we have SSD (Solid State Drives), which have replaced HDD.

Updates also play a major role in battery life. Installing the wrong graphics driver can consume more power than usual. In the same way, if third-party applications from wrong sources are downloaded, they may take up battery life for unknown reasons, such as running background processes or consuming excessive resources that drain the battery faster.

Software and Hardware Reasons

Furthermore, people who have upgraded to Windows 10 might be using new hardware. This version includes a more powerful battery. Just like your mobile phone, a stronger battery has more power and lasts longer.

One can examine the benchmarks on comparable hardware in the battery battle between Windows 10 and Windows 7. Then only you can decide which OS is the best. Most of the manufacturers of old hardware released Windows 7 drivers, but only some have given Windows 10.

A driver package for Windows 7 would not be optimized for Windows 10. This discrepancy is because the SDK for both OSs has changed, and developers might have used different APIs for Windows 7.

Wi-Fi and Networking Impact on Battery Life

In Windows 10 days, you have provision for connecting Wi-Fi, Bluetooth, and many other radio devices. These have a lot of battery life based upon the type of devices. If you are using a cheap Chinese device, it may work well. But in the long run, battery life will not last long.

Furthermore, special features of Windows 10 like virtual desktops, Xbox Networking, Game Bar, and Your Phone are resource intensive and can take power.

The type of browser you use also impacts your battery life. In Windows 10 you have Microsoft Edge, which is more battery friendly and quick. This feature is not supported in Windows 7.

In the 1903 version of Windows 10, more apps are optimized for battery life compared to the 1703 or 1803 version, which contributes to overall improved performance and longer usage times for devices running this version. The life cycle of a battery is also important. After 4 years or so, your battery may be dying.

Small settings can have a huge impact on the battery life of a single session. If you turn off your hard disk and screen after 10 to 20 minutes, instead of 2 hours, you could extend battery life.

Conclusion

Under Wireless Adapter Settings in Windows 10, you have 4 different settings for Power Saving Mode. These include 1. Low Power Saving 2. Medium Power Saving 3. Maximum Power Saving 4. Maximum Performance. If the battery power is coming to an end, like 10 to 20%, you can set the parameters to low or medium.

Using the Sleep option, you can set the hybrid sleep and hibernate after a specified period of time. This makes sure that your laptop power is optimized when you are not using it.

To end the article, screen brightness plays a major role in the Windows 10 vs. Windows 7 battery life comparison. A similar laptop with two different resolutions running the same OS shows a difference in battery life timings.

how Windows 8.1 compares to Windows 10 across all metrics

Furthermore, updates when installing put pressure on the CPU, which will take more power. Due to these reasons, it is difficult to come to a conclusive battery life for either Windows 10 or Windows 7 on the same laptop.