树莓派 3 还是 4：你应该买哪一个？
树莓派
![](/data/attachment/album/202111/18/171924sg0bk3iu43bwi3x4.jpg)


树莓派是一种物美价廉的单板计算机，在很多场景都很有用。不过，在树莓派 4 之前，它作为快速的桌面替代品并不是一个特别合适的选择。


所以，树莓派 4 以其新的功能改变了游戏规则。但是，它与树莓派 3 相比如何？


树莓派 3 仍然值得考虑吗？或者，你应该去买最新和更强大的树莓派 4？


在这篇文章中，我们试图通过强调两者之间的一些关键差异来为你提供一些答案。


首先，让我们看一下两者提供的规格：


### 树莓派 3 的规格


![](/data/attachment/album/202111/18/171951z7pqdplqq0k9kpqg.jpg)


树莓派 3 满足了一个基本入门 DIY 项目的所有要求。如果 [树莓派 Zero 或 树莓派 Zero W](https://itsfoss.com/raspberry-pi-zero-vs-zero-w/) 不符合你的要求，那么树莓派 3 是一个物美价廉的选择：


* 四核 1.2GHz 博通 BCM2837 64 位 CPU
* 1GB 内存
* 无线局域网和低功耗蓝牙（BLE）
* 以太网
* 40 针扩展 GPIO
* 4 个 USB 2 端口
* 4 极立体声输出和复合视频端口
* 全尺寸的 HDMI
* CSI 摄像机端口
* DSI 显示端口
* 用于操作系统和存储数据的微型 SD 端口
* 升级后的开关式微型 USB 电源，最高可达 2.5A 电流


### 树莓派 4 的规格


![](/data/attachment/album/202111/18/171952dkeq6eq9yvzrvllm.jpg)


* 博通 BCM2711，四核 Cortex-A72（ARM v8）64 位 SoC @ 1.5GHz
* 2GB、4GB 或 8GB LPDDR4-3200
* 2.4 GHz 和 5.0 GHz IEEE 802.11ac 无线，蓝牙 5.0，BLE
* 千兆位以太网
* 2 个 USB 3.0 端口
* 2 个 USB 2.0 端口
* 40 针 GPIO 接头（向后兼容）
* 2 个微型 HDMI 端口（最多可支持 4kp60）
* 2 线 MIPI DSI 显示端口
* 2 线 MIPI CSI 摄像头端口
* 4 极立体声音频和复合视频端口
* H.265（4kp60 解码），H264（1080p60 解码，1080p30 编码）
* OpenGL ES 3.1，Vulkan 1.0
* 用于操作系统和存储数据的 MicroSD 卡插槽
* 通过 USB-C 接口的 5V 直流电
* 通过 GPIO 接头的 5V 直流电
* 通过以太网供电


### 内存（RAM）选项


对于树莓派机型，通常情况下，你会得到一个包括 1 或 2GB 内存的单一产品阵容。


树莓派 3B+ 就是这种情况。如果你不需要更多的内存，树莓派 3 可以就是一个不错的解决方案，可以满足所有常规 DIY 项目的需求。


然而，对于树莓派 4，你可以选择 2GB、4GB 和 8GB 的版本。所以，如果你想完成更多的事情，或者在你的树莓派板上实现多个任务，树莓派 4 应该是一个不错的选择。


### 性能差异


尽管这两块板子都采用了博通公司的芯片，但树莓派 4 的性能明显更快。


如果你想把它作为你的迷你桌面的替代品，或者想为你的任务获得更好的计算能力，树莓派 4 将是明显的选择。


说到树莓派 3，它配备了一个四核 1.2GHz 的博通 BCM2837 64 位 CPU。它是一个能够完成各种任务的芯片。


#### 连接能力


两块树莓派板都提供了一个 40 针的扩展 GPIO 接头。


然而，说到 USB 连接时，树莓派 4 提供了两个 USB 3.0 端口以及另外两个 USB 2 端口。而树莓派 3 只限于两个 USB 2 端口。


因此，如果你需要更快的数据传输速度，USB 3.0 端口应该会有帮助。例如，如果你要使用任何 [媒体服务器软件](https://itsfoss.com/best-linux-media-server/)，这可以派上用场。


除此之外，树莓派 4 上还有 USB-C 的存在，如果 USB 配件需要，它可以用来给电路板供电（5V DC）。


#### 双显示器与相机支持


虽然树莓派 3 提供了一个全尺寸的 HDMI 端口、DSI 端口和 CS 端口，但它并不具有双显示器支持。


有了树莓派 4，你可以得到两个微型 HDMI 端口，一个双通道 DSI 端口和一个双通道 CSI 摄像头端口。


### 你应该买哪一个？




| 规格 | 树莓派 3 | 树莓派 4 |
| --- | --- | --- |
| **处理器** | 四核 1.2GHz 博通 BCM2837 | 四核 1.5GHz 博通BCM2711 |
| **RAM** | 1 GB | 高达 8 GB |
| **蓝牙** | BLE | 蓝牙 5.0 |
| **USB端口** | 4 x USB 2.0 | 2 x USB 3.0，2 x USB 2.0 |
| **无线连接** | 是 | 是，2.4 GHz & 5 GHz 频段支持 |
| **显示端口** | 1 x HDMI，1 x DSI | 2 x micro-HDMI，1 个 DSI |
| **电源** | microUSB 和 GPIO，高达 2.5 A | 5V DC，通过 USB-C 和GPIO（3 A） |
| **MicroSD 插槽** | 是 | 是 |
| **价格** | 35 美元 | 35 美元（1 GB 内存）、45 美元（2 GB 内存）、55 美元（4 GB 内存）、75 美元（8 GB 内存） |


如果你想要更快的数据传输，支持双显示器，以及更好的性能，树莓派 4 是一个很好的选择。


考虑到 2GB 内存的树莓派 4 基本型号的价格约为 35 美元。以几乎相同的价格选择 1GB 的树莓派 3 型号，实在是毫无意义。


当然，除非你能得到一个更便宜的价格，并且有特定的要求。树莓派 4 总体上是一个明确的选择。


然而，有一些事情，如板子发热和其他潜在的问题，你可能想在决定之前探讨一下。树莓派 3 已被证明能在许多项目中发挥作用，而树莓派 4 是相当新的，可能还没有经过各种项目的测试。


一旦你确定了这一点，你就可以继续得到它们中的任何一个。


你喜欢用什么？你都试过了吗？请在下面的评论中告诉我们。




---


via: <https://itsfoss.com/raspberry-pi-3-vs-4/>


作者：[Ankush Das](https://itsfoss.com/author/ankush/) 选题：[lujun9972](https://github.com/lujun9972) 译者：[wxy](https://github.com/wxy) 校对：[wxy](https://github.com/wxy)


本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出


OK
Raspberry Pi is an inexpensive single-board computer useful for many things. And, until Raspberry Pi 4, it was not an impressive option as a quick desktop replacement.

So, yes, Raspberry Pi 4 changed the game with its new capabilities. But, how does it compare to Raspberry Pi 3?

Is Raspberry Pi 3 still worth considering? Or, should you go for the latest and greatest Raspberry Pi 4?

In this article, we try to get you some answers to that by highlighting some key differences between the two.

First, let us look at the specifications both offer.

## Raspberry Pi 3 specifications

![raspberry pi 3](https://itsfoss.com/content/images/wordpress/2021/11/raspberry-pi-3.jpg)

Raspberry Pi 3 checks all the boxes for a basic starter DIY project. If [Raspberry Pi Zero or Raspberry Pi Zero W](https://itsfoss.com/raspberry-pi-zero-vs-zero-w/) does not suit your requirements, Raspberry Pi 3 is a sweet spot without spending a lot.

- Quad Core 1.2GHz Broadcom BCM2837 64bit CPU
- 1GB RAM
- Wireless LAN and Bluetooth Low Energy (BLE)
- Ethernet
- 40-pin extended GPIO
- 4 x USB 2 ports
- 4 Pole stereo output and composite video port
- Full size HDMI
- CSI camera port
- DSI display port
- Micro SD port for operating system and storing data
- Upgraded switched Micro USB power source up to 2.5A

## Raspberry Pi 4 Specifications

![raspberry pi 4](https://itsfoss.com/content/images/wordpress/2021/09/raspberry-pi-4.jpg)

- Broadcom BCM2711, Quad core Cortex-A72 (ARM v8) 64-bit SoC @ 1.5GHz
- 2 GB, 4 GB or 8 GB LPDDR4-3200
- 2.4 GHz and 5.0 GHz IEEE 802.11ac wireless, Bluetooth 5.0, BLE
- Gigabit Ethernet
- 2 x USB 3.0 ports
- 2 x USB 2.0 ports.
- 40 pin GPIO header (backwards compatible)
- 2 × micro-HDMI ports (up to 4kp60 supported)
- 2-lane MIPI DSI display port
- 2-lane MIPI CSI camera port
- 4-pole stereo audio and composite video port
- H.265 (4kp60 decode), H264 (1080p60 decode, 1080p30 encode)
- OpenGL ES 3.1, Vulkan 1.0
- Micro-SD card slot for operating system and storing data
- 5V DC via USB-C connector
- 5V DC via GPIO header
- Power over Ethernet

## Memory (RAM) options

With Raspberry Pi models, usually, you get a single product lineup including 1 or 2 GB of RAM.

And, that is the case with Raspberry Pi 3 B+. If you do not need more memory, Raspberry Pi 3 can prove to be a decent solution for all the usual DIY projects you used it with.

However, with Raspberry Pi 4, you get the choices of a 2 GB, 4 GB, and 8 GB variant. So, if you want to get more things done, or achieve multiple tasks on your Raspberry Pi board, the Raspberry Pi 4 should be a great option.

## Performance differences

Even though both the boards feature chips from Broadcom, Raspberry Pi 4 offers significantly faster performance.

If you want to use it as your mini-desktop replacement or want better computing power for your tasks, Raspberry Pi 4 will be the obvious pick.

When it comes to Raspberry Pi 3, it packs in a Quad-Core 1.2GHz Broadcom BCM2837 64-bit CPU. It is a capable chip for a variety of tasks.

### Connectivity capabilities

Both the Raspberry Pi boards provide a 40-pin extended GPIO header.

However, when it comes to USB connectivity, Raspberry Pi 4 provides two USB 3.0 ports along with two more USB 2 ports. And, the Raspberry Pi 3 limits to two USB 2 ports.

So, if you require faster data transfer speeds, USB 3.0 ports should be of help. For instance, if you are going to use any [media server software](https://itsfoss.com/best-linux-media-server/), this could come in handy.

In addition to this, there’s also the presence of USB-C on Raspberry Pi 4 which can be used to power up (5V DC) the board if the USB accessories need it.

### Dual-Monitor & camera support

While the Raspberry Pi 3 offers a full-size HDMI port, DSI port, and CSI port, it does not feature dual-monitor support.

With Raspberry Pi 4, you get two micro-HDMI ports, a two-lane DSI port, and a two-lane CSI camera port.

### Awesome Raspberry Pi Projects to Check Out

25 Raspberry Pi projects anyone can follow!

## Which one should you get?

Specifications | Raspberry Pi 3 | Raspberry Pi 4 |

Processor | Quad-Core 1.2GHz Broadcom BCM2837 | Quad-Core 1.5 GHz Broadcom BCM2711 |

RAM | 1 GB | Up to 8 GB |

Bluetooth | BLE | Bluetooth 5.0 |

USB Ports | 4 x USB 2.0 | 2 x USB 3.0 2 x USB 2.0 |

Wireless Connectivity | Yes | Yes, 2.4 GHz & 5 GHz band support |

Display Ports | 1 x HDMI 1 x DSI | 2 x micro-HDMI 1 x DSI |

Power Supply | microUSB & GPIO up to 2.5 A | 5V DC via USB-C and GPIO (3 A) |

MicroSD Slot | Yes | Yes |

Price | $35 | $35 (1 GB RAM), $45 (2 GB RAM), $55 (4 GB RAM), $75 (8 GB RAM) |


Raspberry Pi 4 is an excellent choice if you want faster data transfer, dual-monitor support, and better performance.

Considering the price for a Raspberry Pi 4 base variant with 2 GB RAM costs about $35. It just does not make sense to opt for the 1 GB Raspberry Pi 3 model at nearly the same price.

Of course, unless you get a cheaper deal and have a specific requirement. Raspberry Pi 4 is a clear choice overall.

However, there are a few things like board heating and other potential issues that you may want to explore before deciding. Raspberry Pi 3 has proven to work with many projects and Raspberry Pi 4 is fairly new that may not have been tested with various projects.

Once you’re sure about this, you can proceed to get any of them.

What do you prefer to use? Have you tried both? Let us know in the comments below.