Apple does not publish a power figure for an M2 Mac mini playing a YouTube playlist nonstop. Its published figures describe other conditions, so the dependable way to answer for your setup is to measure it at the wall while the playlist is actually running.
Apple lists 7 W for Finder-only idle and 50 W for a CPU-maximum test on a specified M2 Mac mini. The 7 W figure can illustrate the arithmetic of continuous electricity use, but it is not a measured streaming load and should not be used to state your likely bill.
Published M2 Mac mini power figures
Apple’s current Mac mini power consumption support page identifies its M2 example as a 2023 Mac mini with an Apple M2 chip, 24 GB of unified memory and a 2 TB SSD. It lists 7 W for idle and 50 W for CPU maximum. Apple says these readings are taken at the wall and include system and power-supply losses.
Those details define what the figures can tell you. The model configuration matters, and the figures are not device-only measurements taken somewhere inside the computer. They describe power drawn from the mains under Apple’s test conditions. That makes them useful reference points for the tested machine and states, not a ready-made estimate for every M2 Mac mini running every workload.
Apple also published a different set of M2-era results in its Mac mini Product Environmental Report. For “Idle—Display on”, the table gives 3.92 W at 100 V, 3.96 W at 115 V and 4.01 W at 230 V. The same report lists sleep at 0.55 W, 0.50 W and 0.51 W at those voltages, and off at 0.08 W, 0.10 W and 0.11 W, respectively.
These report values are not a correction that makes the support-page 7 W figure wrong. They come from another published test with its own definitions and conditions. The report describes “Idle—Display on” as macOS loaded and connected to Ethernet, while Apple Support defines its idle reading differently. When you compare numbers, compare the label and test description as well as the wattage.
| Published result | Stated condition | What it is useful for |
|---|---|---|
| 7 W | Apple Support idle: Finder only, default power-management settings | A reference for that defined idle state |
| 50 W | Apple Support CPU maximum: compute-intensive test maximising processor use | A reference for a processor-heavy test, not typical playback |
| 3.92–4.01 W | 2023 report: “Idle—Display on” at 100 V, 115 V and 230 V | A separate result under that report’s test definition |
The first two results are from Apple Support; the range comes from Apple’s environmental report. Do not compare them as if Apple had run one controlled experiment with every other variable held constant. The table is a guide to what each publication says, not a prediction of playlist consumption.
What Apple’s idle and CPU-maximum readings mean
Apple’s idle figure has a narrow definition: only Finder is open, with default power-management settings. It does not mean the computer is doing nothing in every possible sense, and it does not say what happens with a browser open, a video decoding, a network connection active and playback continuing. Apple’s Support page makes the definition explicit; the word “idle” should not be detached from that test description.
Likewise, CPU maximum is not a general “high end” estimate for a computer’s day. Apple describes it as a compute-intensive test application that maximises processor use and therefore power consumption. A browser video may use hardware video decoding or other components without imposing the same processor workload. A stress test and a playback session are different tasks, so the 50 W result is not a conservative streaming estimate.
The environmental report’s idle-display-on state is different again. Its description includes macOS loaded and Ethernet connected, with the display on. That matters if your question is about the computer alone: a display, speakers, USB devices or networking equipment can add their own electricity use if they are plugged into the same meter. Be clear about whether you are measuring just the Mac mini or the whole viewing and broadcasting setup.
Apple’s figures are wall measurements that include the computer’s system and power-supply losses. If you take a reading at a wall meter, you are measuring at a similar boundary. If you look at a software estimate or a component specification instead, it may describe a different point in the power chain and cannot be directly substituted without checking what it counts.
Why neither figure is YouTube playback power
Playing a playlist continuously combines several activities. The Mac mini must keep the operating system running, handle the browser or playback software, decode video and maintain a network connection. The actual load can also depend on video resolution, codec, browser, whether playback is full-screen, and what else is running. Apple does not publish a controlled M2 Mac mini YouTube playback wattage that resolves those variables.
That is why 7 W and 50 W should be treated as test results rather than a lower and upper bound for your stream. A particular playback setup might not match either test state. It would be misleading to assume the 7 W idle figure is the streaming draw, and equally misleading to use the CPU maximum as though it were what a playlist consumes around the clock.
The display deserves separate attention. If your stream is unattended, you may switch off a connected screen while leaving the computer on; if you are monitoring it locally, the screen may remain on. A meter plugged into the computer alone will not count a separately powered display. A meter at a power strip may count the display and other connected equipment too. Either boundary can be useful, but label it so you do not mistake a whole setup reading for Mac mini-only consumption.
Network and playback choices are also part of a reproducible measurement. Wired Ethernet and Wi-Fi are not identical setups; neither are different browsers, resolutions or playlist behaviours. A loop that pauses at the end, buffers often or requires manual attention does not represent the same operating conditions as uninterrupted playback. For practical planning, use the same configuration you intend to leave running, and check it over a representative period rather than inferring from a short, quiet moment.
If your wider decision is whether to keep a home computer running or move a prerecorded channel elsewhere, the comparison needs more than the Mac’s wattage. Our guide to a 24/7 YouTube stream on Paperspace versus a home computer considers the operating choice; this article’s purpose is narrower, to help you establish the electricity use of the Mac setup you have.
A 7 W illustration for daily and monthly energy
It is useful to see the calculation once, as long as its assumption stays visible. If the Mac drew a constant 7 W for 24 hours, the arithmetic would be:
- 7 W ÷ 1,000 = 0.007 kW
- 0.007 kW × 24 hours = 0.168 kWh per day
- 0.168 kWh × 30 days = 5.04 kWh in 30 days
This is an illustration based on Apple’s Finder-only idle figure. It is not a claim that YouTube playback uses 7 W, and it is not a forecast of your monthly use. Your measured average may differ because the workload and connected equipment differ from Apple’s test conditions.
The conversion is straightforward: watts divided by 1,000 gives kilowatts, and kilowatts multiplied by hours gives kilowatt-hours (kWh). If your meter reports accumulated kWh directly, use that figure for the period measured rather than turning a momentary watt reading into a whole-month estimate. A short instantaneous reading can fluctuate and may not represent a full day of playback.
For another purely hypothetical example, a setup averaging 10 W continuously would use 0.010 kW × 24 hours = 0.24 kWh per day. That number is arithmetic only, not an M2 Mac mini YouTube measurement. The point of examples is to show the method; the measured input must come from your own setup.
You can also use the 30-day calculation with a measured average, but keep the estimate’s assumptions attached: average watts, hours per day and number of days. If you measure for a full representative day, a simple daily reading is generally more informative than multiplying a brief peak or trough by 24. If the usage changes across the day, accumulated energy from the meter captures those variations more directly.
Measure actual playlist use at the wall
A plug-in electricity usage meter is the practical way to establish the draw of your own setup. Put it between the wall socket and the Mac mini’s power connection, then run the playlist under the conditions you expect to use. Prefer a meter that reports accumulated energy in kWh if you want the total for a period; a watts display is useful too, but a single reading is only a snapshot.
Before starting, decide what the measurement should include. For Mac mini-only use, connect only the Mac mini through the meter. For a complete local setup, include the display, speakers or other devices only if they are plugged into the same measured outlet or power strip. Note this boundary in your record. Otherwise, later comparisons can confuse a computer reading with a full-room reading.
Run the playback configuration you intend to leave unattended: the same browser or playback software, resolution, network connection and playlist behaviour. Let it settle into ordinary playback, then record accumulated kWh over a representative period. A full day can make it easier to account for changes in playback and background activity, though the relevant period depends on how variable your setup is. If you can only measure for a shorter interval, record its duration and avoid presenting the resulting average as a perfect month-long forecast.
Keep a brief note of the conditions alongside the reading. Record the Mac mini model, meter start and end times, whether the display and speakers were included, browser, video resolution, wired or wireless network, and any unusual interruptions. This is not paperwork for its own sake: it lets you repeat the test after changing one setting and see whether the actual measured energy changes.
If the meter provides only average watts, use average watts × hours ÷ 1,000 to estimate kWh for that measured interval. For example, use the average reported by the meter and the exact number of hours, rather than assuming a rounded day. If the meter provides accumulated kWh, use that total; it already reflects changes in draw during the interval.
This also helps diagnose what your number does and does not cover. A meter on the computer’s plug will not count a screen on another socket. A power strip reading may include devices that are sometimes off. If you are measuring energy for an unattended channel, decide whether the question is the cost of keeping the Mac alive or the cost of the complete arrangement, then keep that scope consistent.
For a playlist that needs to stay on air while your own computer is off, the practical concern can be less about measuring a local machine and more about avoiding an overnight computer interruption. StreamNeo removes that specific need to leave your own computer running: you upload the video once, provide your YouTube stream key, and the broadcast continues from the cloud, with monitoring and automatic restart if it drops. It is YouTube-only, so it is not an answer for a channel that must broadcast to another platform as well.
A machine running an unattended loop also needs a dependable playback and audio configuration. If your channel uses a local computer, our guide to troubleshooting a YouTube live stream with no audio is relevant when the computer appears to be playing but viewers hear nothing. Electricity measurement will not reveal an audio fault, so treat those as separate checks.
Apply your local electricity tariff
Once you have a measured energy figure, calculate cost using the rate that applies to your electricity account. Multiply the kWh for the period by the relevant per-kWh charge. Your actual bill may contain other elements, such as fixed charges, taxes or different rates by time or usage band, so this multiplication estimates the energy component under the rate you selected rather than reconstructing every line of the bill.
For example, if a meter records a daily kWh total, multiply that measured total by your applicable per-kWh rate to estimate the daily energy charge. To estimate a longer period, use the accumulated kWh for that period or a clearly labelled average multiplied by the number of days. Do not insert Apple’s 7 W as though it were the measured input for playback, and do not quote a bill without both a measured draw and a tariff.
In India, check the tariff applicable to your own connection and location; rates and bill structures are not universal. Use your latest bill or the official source for your electricity provider or local distribution company, and check whether the rate varies by slab, time or other billing terms. A number from another household or state is not a substitute for your own tariff.
It is worth keeping the measured energy and calculated cost in separate notes. The meter reading is the observation; the cost is an estimate based on the tariff and billing assumptions. If your rate changes or the bill uses a tiered structure, you can recalculate without repeating the wall measurement, provided the setup and measured period are still representative.
For a broader choice about how to run a prerecorded channel, compare the energy measurement with the practical costs and responsibilities of the alternatives. A NAS versus VPS comparison for nonstop prerecorded streaming covers a different operating approach; it does not replace measuring the wall draw of your own Mac mini. Choose the comparison that matches the question you are trying to answer.
Before committing, compare the operating options on the pricing page. When the file and channel are ready, start free — 24-hour trial, no card.
FAQ
Does an M2 Mac mini use 7 W while streaming YouTube?
That is not established by Apple’s published figure. Apple lists 7 W for Finder-only idle with default power-management settings, not for YouTube playback. Measure your own playback setup at the wall to get a relevant result.
Is 50 W a useful estimate for a nonstop playlist?
No. Apple’s 50 W figure is for a CPU-maximum test designed to maximise processor use. It is not a measurement of browser video playback, nor a normal-playback estimate.
How much would a nonstop playlist cost per month?
There is no defensible specific bill without the actual measured energy use and your applicable tariff. Measure kWh over a representative period, then multiply it by the relevant per-kWh charge, taking account of how your bill applies rates.
Should I include the display in the measurement?
Include it only if you want the electricity use of the whole setup rather than the Mac mini alone. A display on a separate socket will not appear in a meter reading taken only at the Mac mini’s plug. Record what is connected to the meter so the result is clear.