Not necessarily. A faster CPU can use more power when it runs at higher frequency or voltage, but its model or speed rating alone cannot tell you what it will cost to loop a prerecorded YouTube video. Video decoding may use dedicated hardware, and the display, other components, playback quality and computer power settings also affect electricity use. For a meaningful comparison, measure each computer’s whole-device power while playing the same video under the same conditions.
Why CPU speed alone does not determine the cost
Frequency and voltage affect power while the CPU is running
A CPU operating at higher clock frequency and voltage can draw more power per unit time. The Linux kernel’s documentation on CPU performance scaling describes that relationship, while also explaining that frequency selection can respond to estimated workload. This is conditional: a processor’s maximum speed does not mean it runs at that speed throughout video playback.
A specification is not a wall-power measurement
Processor characteristics such as frequency, voltage, cache and manufacturing process can affect energy use. TDP is a basic indication, not a measurement of the electricity drawn by a complete computer during playback. Microsoft’s hardware power considerations provide context on those processor characteristics; they do not establish a YouTube playback cost for a particular PC.
Video decoding can change the comparison
Video playback does not necessarily rely only on general-purpose CPU cores. Supported devices can use dedicated hardware to decode some video formats. Intel’s Core Ultra processor datasheet describes hardware-accelerated decoding for supported formats, including AVC, HEVC, VP9 and AV1. The available path depends on the specific processor and content; that capability alone does not prove that a browser is using hardware decoding during your playback.
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#1 Best Overall
- 【Ryzen 5 3500U Processor】KAMRUI Essenx E2 Mini PC is equipped with AMD Ryzen 5 3500U (4-cores/8-threads, up to 3.7GHz) with integrated Radeon Vega 8 Graphics(1200MHz, 8 Core). The 3500U CPU operates at a base frequency of 2.1 GHz and a Boost frequency of 3.7 GHz. This DDR supports upgradable up to 32GB, SSD supports up to 2TB.(NOT INCLUED), KAMRUI E2 3500U Mini PC is ideal for light office work and home entertainment. KAMRUI E2 3500U is more than 35% more powerful and smoother in operation than the Intel N150, 33% faster than Intel N95, 28% performance boost over Intel i3-10110U, and 42% stronger processing power than AMD Ryzen 3 3200U.
- 【16GB DDR4 & 256GB SSD】The KAMRUI E2 mini computers is equipped with 16GB DDR4(Expandable up to 32GB) for faster multitasking and smooth application switching. 256GB M.2 SSD ensures fast startup times,fast file transfers and plenty of storage space,eliminating slow loading times and ensuring fast responsiveness.Storage space can RAM supports up to 32 GB, SSD supports up to 2TB (Not included)make file storage easier.
- 【4K Dual Display & USB 3.2 Type-A Port】KAMRUI E2 3500U mini desktop pc is equipped with an HDMI 2.0+DP 1.4 interfaces for faster transmission, Support Dual 4K@60Hz Display, E2 mini desktop computers is ideal for visual home entertainment, home office, conference rooms, etc. USB3.2 Gen1 Type-A Port×2 with a transfer speed of up to 5Gbps (10 times faster than USB 2.0) for efficient data transfer. The RJ45 1000M Gigabit Ethernet Port ensures a stable network connection.
- 【WiFi+Bluetooth stable connection】The Kamrui E2 micro pc have reliable and stable wireless connection, open websites in seconds, watch movies without buffering and download files smoothly, connect your monitor from WiFi or Ethernet, use a wireless keyboard and mouse through bluetooth, which will be powerful workstation for you.
- 【Versatile Ports】This KAMRUI E2 Small pc is equipped with HDMI 2.0×1(4K@60Hz)、DP1.4×1(4K@60Hz)、Gigabit Ethernet Port (RJ45, 10/100/1000Mbps) ×1、USB3.2 Gen1 Type-A Port×2（5Gbps）、USB2.0 Type-A Port×2、3.5mm Audio Jack ×1、DC In ×1、Power Button ×1
A 2021 study comparing HEVC hardware and software decoding discusses energy trade-offs related to decoder implementation, core count and clock frequency. Its findings concern the study’s tested conditions, not a universal electricity figure for current YouTube playback. Read the study in the Journal of Systems Architecture.
Keep playback conditions consistent
Quality and frame rate can affect how demanding playback is. YouTube says playback quality can respond to connection speed, player or screen size, the uploaded source quality and browser format support; you can also choose a quality manually. See YouTube’s guide to changing video quality on a computer. High-frame-rate playback is available when the source was uploaded or live-streamed at a high frame rate; YouTube’s high-frame-rate playback guidance describes supported quality selections.
Rank #2
- Office Gaming Mini PC - UPGRADED GMKtec Nucbox M5 Ultra Series is equipped with the powerful AMD Ryzen 7 7730U processor, 8 Cores/16 Threads, Base 2.00GHz (Power Saving Quiet Mode) with Turbo Boost up to 4.50GHz (Performance Mode) in BIOS settings, Based on the ZEN 3+ architecture, this small but powerful mini pc delivers satisfying results in productivity, office work, and gaming. 35% Performance increase over AMD Ryzen 5 7430U/ Ryzen 7 5700U, 5600U, 5560U, 5500U.
- 16GB DDR4 RAM & 256GB PCIe SSD - Installed with DDR4 16GB RAM (1x16GB), the Nucbox M5 Ultra mini pc support expansion to 64GB RAM. Featured with 256GB M.2 2280 PCIe 3.0 SSD, support dual slot expansion to 4TB SSD. (Upgrades not included)
- DUAL NIC LAN 2.5G RJ45 - Fast Network Speeds: Enjoy up to 2500Mbps data transmission speed without worrying about lagging. Ideal for working, gaming, and surfing the internet. Great for Untangle, Pfsense or as a server office PC.
- Mini Desktop Computer with 4K Triple Screen Display - Nucbox M5 Ultra integrates AMD Radeon Graphics 8 Cores 2000 MHz GPU to deliver powerful graphics processing power to easily handle the demands of complex design software, 4K@60Hz UHD video editing, and playback. It can connect to 3 display screens simultaneously.
- Fast Internet WiFi 6E + BT5.2 Connection - GMKtec Mini PC with WiFi-6E Wireless, have 2.5G/5G/6G triple band, more faster and lower latency. Bluetooth 5.2 allowing you more quickly to connect other wireless devices (headset, mouse, keyboard, etc.) Interface features 2*USB3.2 ports, 2*USB2.0 ports, 1*HDMI 2.0 port(4K@60Hz), 1*USB-C port(PD/DP/DATA), 1*DP Port, 1*Audio 3.5mm (HP&MIC), 1*DC Power Port.
For a fair CPU or computer comparison, use the same source video, browser, resolution, frame rate, screen setup and network conditions as far as practical. Keep playback running for the same length of time. If the computer is connected to different displays or peripherals, those differences can affect whole-device readings too.
How to measure the electricity difference
- Choose the workload. Use the same prerecorded YouTube video, browser and manually selected playback quality on each computer. Confirm that the selected video and playback conditions are comparable.
- Keep the setup steady. Use the same display conditions and connected peripherals where possible. Allow each computer to settle into playback rather than comparing one during startup with another after it has been running.
- Measure at the wall. A plug-in electricity monitor can measure the computer’s whole-device power draw. It does not isolate CPU-only power, but it is relevant to the electricity used by the computer as a whole.
- Record equal-duration readings. Compare average power during playback over the same observation period. If you want to estimate the playback-related increase, also measure each computer’s idle power under otherwise similar conditions and compare the difference.
- Estimate cost using your own tariff. Convert measured average power and intended runtime into energy use, then apply the electricity rate for your location and plan. There is no universal cost figure without those measurements and your tariff.
CPU utilization, CPU package power, TDP and wall power are different measurements. A high utilization percentage does not by itself tell you how much electricity the whole computer uses.
Rank #3
- 【AMD Ryzen 3 5300U CPU: Outperforms N150 & 3500U】 BOSGAME E5 mini PC is powered by the TSMC 7nm FinFET architecture AMD Ryzen 3 5300U processor (4 Cores, 8 Threads, up to 3.8GHz boost, 6MB total cache). Compared to low-end Intel N150 or 3500U chips which only have 4 single threads and throttle under load, the 5300U delivers over 30% faster multi-core speed. Run 30+ browser tabs, large Excel sheets, and Zoom meetings simultaneously without system lag.
- 【8GB DDR4 RAM & 256GB NVMe SSD Storage】 Installed with high-speed 8GB DDR4 dual-channel memory and a fast 256GB M.2 2280 SSD, eliminating slow boot times and application loading delays. To accommodate growing data requirements, the upgradeable hardware design features dual SODIMM slots that allow you to expand memory up to 64GB RAM, ensuring smooth operation during heavy multitasking.
- 【High-Capacity Dual M.2 SSD Storage Expansion】 Never worry about running out of space for your business files. In addition to the pre-installed 256GB system drive, the motherboard houses an extra empty internal M.2 2280 NVMe PCIe 3.0 slot. This allows you to easily add a second solid-state drive for up to an additional 2TB of storage capacity (upgrades not included) without needing to remove or reinstall the original operating system.
- 【Radeon 6-Core Graphics & Triple 4K Displays】 Integrated with official AMD Radeon Graphics (6 Graphics Cores, 1500 MHz frequency) for casual gaming, photo editing, and crisp 4K media decoding. Featuring 1x HDMI 2.0 port, 1x DisplayPort, and 1x Full-Function Type-C port, the E5 outputs true 4K@60Hz resolution to three monitors at once. This multi-screen setup eliminates constant window-switching for traders, programmers, and office workers.
- 【Dual 2.5GbE LAN Ports for Advanced Networking】 Experience fast wired network transmission speeds up to 2500Mbps without lagging or buffering. The integration of dual 2.5 Gigabit Ethernet ports (powered by Realtek RTL8125 controller) makes this compact computer an exceptional hardware choice for tech enthusiasts. Easily configure it into software routers, hardware firewalls (pfSense, OpnSense), home NAS servers, or local homelabs.
Does turning off hardware acceleration save electricity?
There is not enough evidence to recommend disabling browser hardware acceleration as a general power-saving step. YouTube mentions turning it off when troubleshooting a green screen in the player, but that support guidance does not claim that disabling it saves electricity. If you are investigating a particular computer, compare whole-device power with the same video and settings before drawing a conclusion. See YouTube’s green-screen troubleshooting guide.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What this means for a 24/7 prerecorded stream
Looping a video in a YouTube player and keeping a YouTube live stream online are different jobs. The measurement method above applies to a computer playing a video; it does not establish the cost of running a live-stream setup. If you need a prerecorded video to keep a YouTube channel live, compare the whole cost and reliability of your chosen setup rather than assuming a faster CPU will necessarily raise or lower the bill.
Rank #4
- 12th Intel Alder Lake N95 Processor – The GMKtec G3 S Mini PC is powered by the 12th Gen Intel N95 processor with 4 cores, 4 threads, 6MB cache and a burst frequency up to 3.4GHz. Compared with N100/N5105/N5100/N5095, the N95 delivers up to 36% overall performance improvement. Perfect for routine tasks, office work, and home entertainment, this compact mini desktop is more convenient than traditional bulky PCs.
- 8GB RAM & 256GB SSD Storage – Pre-installed with 8GB DDR4 memory and a fast 256GB M.2 2242 SSD, the G3 S mini desktop offers quicker startup, smoother multitasking, and faster file transfers. Enjoy seamless performance whether you’re working on multiple applications, browsing, or streaming content.
- Rich Interfaces & Connectivity – The G3 S mini computer comes equipped with USB 3.2 (up to 10Gbps), dual HDMI 2.0 (4K@60Hz), and a 3.5mm audio jack. With support for WiFi 5, Bluetooth 5.0, and Gigabit Ethernet (RJ45 1000MbE), it connects easily with monitors, projectors, printers, office equipment, and other peripherals, making it versatile for both home and business use.
- Dual 4K Display Support – Featuring upgraded Intel UHD Graphics (up to 1000MHz), the G3 S supports 4K video playback and AV1 decoding for a smooth viewing experience. With dual HDMI outputs, you can connect two 4K@60Hz displays simultaneously, enabling efficient multitasking for work and entertainment.
- GMKtec WARRANTY - GMKtec offers a 1-year limited GMKtec's warranty for each mini PC, starting from the date of the purchase. All defects due to design and workmanship are covered. With a professional after sales team always ready to attend to your needs, you can simply relax and enjoy your mini PC.
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Quick Recap
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