F5F Stay Refreshed Software Operating Systems Does turning on Windows 11 Efficiency Mode make my computer use more power than leaving it turned off?

Does turning on Windows 11 Efficiency Mode make my computer use more power than leaving it turned off?

Does turning on Windows 11 Efficiency Mode make my computer use more power than leaving it turned off?

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DarkBoy__YT
Posting Freak
898
08-21-2026, 07:14 AM
#1
I noticed something in Windows 11 that isn't clear on Windows 10, but I think it works there too. You can set some tasks to run very slowly to use less power. Usually, apps with low processes work well here. But if you try to turn off the main task or its parts, it seems you can only turn off some parts, not all. It feels like those specific apps actually use more CPU when they are on Efficiency Mode compared to when they aren't. I'm confused about memory though because the goal is lower RAM but sometimes I feel like it uses more memory while using less power? Maybe the power saving makes things slower instead of faster. Is this just a bad feature being tested by Microsoft, or is it known not to work well already? What are we trying to do here: make less power use, less CPU, and overall less activity? My computer is an i7 8750H with UHD630 graphics, 24GB of RAM running at high speeds on a big SSD. I have two hard drives, one 1TB and another 2TB, both using PCIE connections but the system runs slower than the slots suggest because it might be limited by older speeds.
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DarkBoy__YT
08-21-2026, 07:14 AM #1

I noticed something in Windows 11 that isn't clear on Windows 10, but I think it works there too. You can set some tasks to run very slowly to use less power. Usually, apps with low processes work well here. But if you try to turn off the main task or its parts, it seems you can only turn off some parts, not all. It feels like those specific apps actually use more CPU when they are on Efficiency Mode compared to when they aren't. I'm confused about memory though because the goal is lower RAM but sometimes I feel like it uses more memory while using less power? Maybe the power saving makes things slower instead of faster. Is this just a bad feature being tested by Microsoft, or is it known not to work well already? What are we trying to do here: make less power use, less CPU, and overall less activity? My computer is an i7 8750H with UHD630 graphics, 24GB of RAM running at high speeds on a big SSD. I have two hard drives, one 1TB and another 2TB, both using PCIE connections but the system runs slower than the slots suggest because it might be limited by older speeds.

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Destroy_kill
Junior Member
18
08-21-2026, 12:27 PM
#2
It's meant to put idle web pages to sleep or make them run slower instead of always being fast, that's what QoS does. Which specific browser do you want me to test this for?
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Destroy_kill
08-21-2026, 12:27 PM #2

It's meant to put idle web pages to sleep or make them run slower instead of always being fast, that's what QoS does. Which specific browser do you want me to test this for?

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Vykor817
Member
214
08-24-2026, 05:15 AM
#3
Opera GX is set for just 25% of your CPU power and 4GB of memory, but I got 32GB because it uses two sticks (1x16GB each). Sometimes it stops using the CPU limit, so you might get more power than expected.
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Vykor817
08-24-2026, 05:15 AM #3

Opera GX is set for just 25% of your CPU power and 4GB of memory, but I got 32GB because it uses two sticks (1x16GB each). Sometimes it stops using the CPU limit, so you might get more power than expected.