Roku或Chromecast等流式电视设备都已插好电源，随时可用。当您的电视关闭时，耗电更少，但流媒体设备呢？他们需要多少能源？
有许多不同形状和大小的流媒体设备。有些是较大的“机顶盒”，而另一些则是较小的“流媒体棒”。功耗因设备而异。让我们看看哪一个使用得最多。
相关：您应该使用的7个Roku功能
数据
流媒体设备的世界是广阔的。大多数制造此类设备的公司都有多种选择。我们挑选了一些最常见的流媒体设备。
另一件要考虑的事情是你在用这个设备做什么。从Netflix流媒体播放4K HDR电影将比观看YouTube视频消耗更多的能量。用流媒体设备测量你能做的每一件事是不可能的，但我试着得到一个好的总体测量值。
我用了一个智能插头来测量Chromecast Ultra、Chromecact with Google TV和Roku Ultra的功率。对于Apple TV和Fire TV，我能够找到信息来源。（“~”字符表示近似数量。）
| Device | TV On | Idle |
| Apple TV 4K | 3.03-5.58w | 0.30w |
| Chromecast Ultra | 1.5-2.0w | 1.5w |
| Fire TV 4K | ~4w | ~1w |
| Chromecast with Google TV | ~1.0-3.0w | 1.0w |
| Roku Ultra | ~3.0-4.5w | 3.0w |
There’s some pretty interesting data here. Surprisingly, the Chromecast Ultra uses about the same amount of energy as the Chromecast with Google TV—even a bit more while idle. The Google TV has a full-blown operating system, whereas the Ultra is just a dongle.
The Apple TV 4K and Roku Ultra are very comparable as the “biggest” devices of the bunch, but Apple’s uses very little power while idle. The Fire TV 4K was also comparable to the bigger devices.
How Much Does it Cost?
Let’s put some dollar signs on all these numbers. We’ll use an electricity rate of $0.18 per kilowatt-hour (kWh), four hours of active use, and 20 hours of idle time. Here’s how it breaks down (keep in mind these are estimates):
- Apple TV 4K: Around $1.44 per year.
- Chromecast Ultra: Around $2.41 per year.
- Fire TV 4K: Around $2.36 per year.
- Chromecast with Google TV: Around $1.83 per year.
- Roku Ultra: Around $4.87 per year.
Due to the higher idle power usage, the Roku Ultra is far and away the most expensive of the bunch. That’s also why the Apple TV 4K is the cheapest, since its idle power usage is very low. Idle power usage is very important for devices you don’t use all the time.
Now, is around $5 per year to keep your Roku plugged in all the time a big deal? Probably not. That’s less than $0.50 per month. Still, it’s interesting to see how much power our daily devices are using.
