Raspberry Pi 400 review: functional $100 desktop PC that supports both Raspberry Pi OS and Ubuntu Desktop, but integrated keyboard is narrow and no 3.5mm jack 全新相機收購

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op support for the Pi hardware family.
In brief, the Pi 400 is a slightly faster version of the 4GiB Pi 4 that ships preassembled in a small, wedge-shaped chassis with integrated keyboard. The new model directly targets desktop replacement use and can be purchased solo for $70 or as a full kit (as seen above) for $100.
The new form factor—which has apparently been in the works ever since the introduction of the official Raspberry Pi keyboard—addresses and enthusiastically supports the Pi 4’s growing use case as a replacement or alternative for the traditional desktop PC. Upton told Ars that the Pi 400 is about 20-percent faster than the Pi 4; it has largely the same components under the hood but on a differently laid-out board, and its BCM2711 CPU is clocked a touch higher than the BCM2711 in the Pi 4.

The Pi 400 is simple to set up—all you need is its USB-C power cord, the included HDMI cord for video out, and the included mouse.

Jim Salter

The Pi 400’s keyboard layout is largely sane, aside from compressed arrow keys—but the whole thing is roughly four inches narrower than the corresponding part of a standard desktop keyboard.

Jim Salter

From the left: 40-pin GPIO header, microSD card slot, two micro-HDMI output ports, a USB-C power port, two USB 3.0 type-A ports and one USB 2.0 type-A port, Gigabit Ethernet port, Kensington lock slot.

Jim Salter

The visible hump on the underside of the Pi4 provides a comfortable typing angle and clearance for the passive-cooling vents.

Jim Salter

Unboxed and plugged in, the Pi 400 is functional but not particularly lovely. On the plus side, the integrated keyboard means fewer cables to deal with. Unfortunately, the remaining cables are unusually likely to snarl and look a bit feral. They are both stiffer and shorter than I’d prefer in an ideal world, making it difficult to impossible to end up with a setup that doesn’t look like a rat’s nest. The red cable for the mouse clashes pretty violently with the off-white cables for USB-C power and micro-HDMI out, which doesn’t help any.
That said, it’s important to remember that the entire kit retails for $100. Within the limits of the Pi 400’s very generous price, it’s not really fair to complain too hard about a few aesthetic gaffes here and there! Consumers with a few extra dollars to spend might want to consider replacing the Pi 400’s mouse with something a bit more functional, though… and a full-sized keyboard might not be a bad idea while you’re at it.
The integrated keyboard is functional but noticeably narrower than a standard keyboard. I’m not generally sensitive to variations in keyboard layout due to a long career involving Other People’s Computers in large numbers, but I was plagued with constant mistyping problems the entire time I tested the Pi 400.
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It’s also worth noting that, while the Pi 400 supports dual displays, it does so with micro-HDMI ports, not full-sized ones—and it ships with a single cable. You’ll need an extra cable if you want to use your Pi 400 with dual displays—and since it ships with a micro-HDMI to HDMI cable, not an adapter, things will get complicated if you want to use it with, e.g., portable LED displays that have off-sized ports themselves.
Finally, there’s no 3.5mm audio jack on the Pi—if you’ve got it hooked to a television or a monitor with speakers, it can deliver audio over HDMI; otherwise you’ll need a supported USB audio device. I tested with an inexpensive USB gaming headset, which worked fine.
Impressions—Raspberry Pi OS

Raspberry Pi OS suspects you might be using it on a television, not a proper monitor—so it starts out with significant overscan boundaries by default.

Jim Salter

The overscan goes away after a reboot, if you tell the setup dialog, “Yes, I see big black borders.”

Jim Salter

We tried playing a 4K 60fps YouTube video on the Pi 400. Even at 1080p, not 4k, it dropped a lot of frames.

Jim Salter

Checking CPU utilization, we see that the system’s pretty much pegged while trying to play this 60fps video, even at 720p.

Jim Salter

I began testing the Pi 400 using its native Raspberry Pi OS Linux distribution—which is basically Debian with LXDE and a lot of middleware optimizing it for the Pi. Unfortunately, there’s almost nothing in the way of standard benchmarking utilities that run on ARM Linux—all I could find was the Phoronix Test Suite, which would have required more time to run than I had to test the device in total. So for the most part, I’m going to talk about my subjective experience, rather than hard numbers.
Further ReadingPinebook Pro review—a $200 FOSS-to-the-hilt magnesium-chassis laptopThe good news about the Pi 400 is that it does make a credible desktop PC, in the sense that, yes, you can totally use it without things breaking. With that said, you’re unlikely to forget that you’re using a very inexpensive ARM device. Much like the Pinebook Pro, the Pi 400 exhibits heavy latency while opening applications that’s perhaps possible to live with but impossible not to notice.
Also like the Pinebook Pro, once the applications are actually open, they generally run smoothly enough—although we did find the Pinebook Pro’s hex-core 2.0GHz big/1.5GHz little CPU noticeably punchier than the Pi 400’s straight 1.8GHz quad-core. The biggest problem I had was with high-resolution, high-frames-per-second YouTube videos.
I only tested the Pi 400 with a 1080p monitor, so I can’t speak to its chops with 4K videos—but it’s absolutely not capable of handling the Costa Rica in 4K 60fps HDR video without visible frame drop, even at 720p. The major issue here appears to be the 60fps rate, not the 720p resolution. I also tested the “Forests” episode of Netflix’s docu-series Our Planet on YouTube at 1080p, and that video played back flawlessly.
Examining CPU utilization during playback of the 60fps Costa Rica video, we can see the little 1.8GHz Broadcom quad-core CPU struggling—it’s at its limits, with CPU utilization for all cores at more than 90 percent. Although the BCM2711 supports hardware offload of video decoding—without which, this video would be playing in seconds per frame, rather than just dropping frames a bit—the hardware offload can only do so much, and the CPU is being asked to take on more than it can handle in software.
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This effect is even more visible when entering or leaving full-screen playback. On a standard desktop PC, that operation takes perhaps 100-150ms. On the Pi 400, it frequently takes as much as three or four full seconds, during which the video itself tends to keep playing, but the surrounding controls and framework only partially render/stop rendering while the shift finishes taking place.
Further ReadingBattle of the $350

特約記者洪聖壹／綜合報導

今年初開放讓相機成為電腦視訊鏡頭的 全新相機收購canon，現在更進一步成為首間可以把相機拍攝的內容備份到雲端相簿的廠商，只要在手機端下載應用程式，就可以透過以往 Wifi 連線的方式，把相機的內容直接透過手機傳到雲端相簿，亞洲方面共開放 27 款新款相機支援該項功能。

在以往，全新相機收購canon 用戶如果要存取相機拍攝的照片，通常有三種方式，一種是直接將相機透過數據傳輸線連接到電腦，另外一種方式就是從相機取下記憶卡，然後透過記憶卡的轉接器存入電腦、手機。

第三種方式，就是讓手機下載或者更新最新版本的 image.全新相機收購canon 應用程式（支援 iOS、Android），然後讓相機跟手機透過 Wifi 的形式連線，就可以把照片傳到 image.全新相機收購canon 當中，不過這個形式最麻煩的地方就是不能一次傳輸與存取多張照片，甚至還可能出現照片遺失的問題。

如今 Google Photos 的合作，將可以稍微緩解相關問題，全新相機收購canon 用戶只要按照原來照片傳輸的形式，就可以直接把照片備份到自己的 Google One 雲端帳戶，一來除了可以直接讓遠端的客戶透過 Google Photo 連結查看照片，一般家庭用戶也可以直接用相同的方式更新自己家裡的數位相框。

當然啦！這個作法有一個大前提，就是要成為 Google One 的用戶。全新相機收購canon 與 Google 雙方將開放用戶免費使用一個月 100GB 的 Google One 雲端空間。

Google 官方指出，自兩年前啟動 Google Photos 合作夥伴計劃至今，已經跟上百家廠商達成合作，藉此讓用戶可以用更簡單的方式，在其他產品直接觀看照片和影片。相關合作成果也在這兩年的大型展覽，好比說在 MWC 2018 期間，Google Photos 專區就展示了透過帶有螢幕的智慧喇叭，直接用類似數位相框的形式，顯示家庭相簿。

目前這項合作正式拓展到 DSLR 或數位相機領域，讓用戶不用插線、不用拔出記憶卡，就可以存取找片，某方面來說，也算是相機領域的一個新里程碑。記者稍微數了一下，在亞洲，這項合作將優先支援 27 款 全新相機收購canon 新款相機，包括最近才剛推出的 R5、R6。

＊資料來源：Google Photos

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