RAM有各种类型、容量、速度和品牌。如果您想要升级您的RAM或需要验证您的系统是否满足某些最低要求，您必须检查PC中的RAM类型。(RAM)虽然术语和数字起初可能看起来令人生畏，但实际上确定系统配备的RAM相当容易。(RAM)
RAM 速成班
在我们详细了解如何检查您的计算机配备的RAM类型之前，重要的是要确保我们都在同一页面上(page)。RAM 或随机存取存储器(Random Access Memory )是一种特殊类型的非常快速的计算机存储。
它与您的硬盘驱动器不同，后者相对较慢且非易失性。(non-volatile.)也就是说，当电源关闭时，您的硬盘驱动器不会丢失其数据。另一方面，RAM是(RAM)易失(volatile)的，正如您可能已经猜到的那样，这意味着当电子停止流动时，它的数据就会消失。
RAM在计算机中至关重要，因为CPU（中央处理单元(Processing Unit)）需要快速访问它必须处理的下一组数据。因此，应用程序和相关数据被加载到RAM中，从而确保计算机可以在其峰值运行。
如果您想了解更多关于RAM的技术细节，请查看了解 RAM 内存的类型及其使用(Understanding Types Of RAM Memory & How It’s Used)方式。
检查您的主板手册(Motherboard Manual)或网站(Website)
如果您只是想知道您的计算机支持哪种类型的内存，也许是为了升级，您可以在主板手册中找到该信息。
您还可以谷歌主板的型号以找到其产品页面。这将列出它支持的确切RAM类型。(RAM)虽然这并没有告诉您当前安装在系统中的RAM的确切速度和容量，但它确实告诉您系统支持的 DDR 类型(type of DDR)以及它支持的速度。它还应该告诉您可以安装的最大RAM量是多少。(RAM)
使用 CPU-Z 查看您的 RAM 类型
获取此信息的最简单方法之一是使用名为CPU-Z的免费应用程序。多年来，我们一直在使用它来快速检查有关系统的最重要的技术细节。下载并安装CPU-Z后，运行程序并选择内存(Memory)选项卡，如下所示。
在“常规”部分下，查看“类型”。这会告诉您系统安装了哪一代DDR内存。(DDR)在“大小”下，您可以看到安装了多少RAM
接下来，切换到“SPD”选项卡。这是显示每个单独RAM模块报告的信息的位置。如果系统中的所有模块都相同，则无需在“内存插槽选择”下拉菜单中切换它们。
正如您在此处看到的，这台计算机使用的是三星(Samsung)内存，每个模块占用 8GB 的 RAM。本系统使用DDR4-2667 RAM。您可以通过在“内存插槽选择(Memory Slot Selection)”下拉菜单 中计算可用插槽的数量来检查它们。
您不必担心窗口下半部分的时序表(Table)，但如果您对这些数字的含义感到好奇，您可以在我们的RAM 超频(RAM overclocking)文章中找到更多信息。
从命令提示符(Command Prompt)或PowerShell获取RAM 信息(RAM Info)
有时您会遇到无法访问Windows图形用户界面的情况，或者您可能只是更喜欢命令提示符(Command Prompt)的冰冷、无限的黑色深度。无论哪种方式，都有一个命令提示符(Command Prompt)指令，可让您查看系统中当前安装的内容。您所要做的就是输入：
wmic MEMORYCHIP 获取 BankLabel、DeviceLocator、容量、速度(wmic MEMORYCHIP get BankLabel, DeviceLocator, Capacity, Speed)
如您在此处所见，这将向您显示每个RAM模块的详细信息。(RAM)
这会显示每个内存模块的大小和速度，但不会告诉您内存的类型。如果您想要该信息，我们需要在命令中添加一些位。
wmic MEMORYCHIP 获取 BankLabel、DeviceLocator、MemoryType、TypeDetail、容量、速度(wmic MEMORYCHIP get BankLabel, DeviceLocator, MemoryType, TypeDetail, Capacity, Speed)
在MemoryType下，您会看到一个数字代码。此代码告诉您系统具有哪种类型的DDR：
- 22 – DDR2
- 25 – DDR3
- 26 – DDR4
这只是一些最常见的RAM类型，但如果您看到上面未列出的数字，您可以在 Microsoft 的文档中找到完整的内存类型代码列表。(memory type codes)
(Command Prompt)正在逐步淘汰命令提示符以支持PowerShell，如果您更喜欢使用它，则可以，但命令有点不同：
Get-CimInstance -ClassName Win32_PhysicalMemory | Format-Table Capacity, Manufacturer, MemoryType, FormFactor, Name, Configuredclockspeed, Speed, Devicelocator, Serialnumber -AutoSize
检查 BIOS
无论您的 PC 使用什么操作系统，您通常都可以在启动系统之前获得有关系统使用哪种类型的RAM的信息。(RAM)计算机BIOS通常会有一个内存部分，它会显示有关已安装RAM的详细信息。这通常包括您正在使用的DDR的生成、每个模块的大小以及它的运行速度。
进入 BIOS(entering the BIOS)的方法因计算机而异。它通常是在计算机开机后立即按下一个简单的按键。例如，您必须反复点击Delete键或F12才能进入BIOS。特定键通常会在计算机启动时显示在屏幕上，但它也会出现在主板手册中。
查看模块的槽口(Notches)和引脚(Pins)
确定您的计算机具有哪种类型的RAM的最后一种方法是物理检查内存模块。这将涉及将它们从插槽中移除，因此只有在您对过程感到满意时才这样做。
RAM模块的详细信息可以在DIMM上的标签上读取，但您也可以通过槽口的位置来识别它们，如图所示。
笔记本电脑内存怎么样？
上面写的大部分内容都适用于笔记本电脑RAM，至少在涉及基于软件的方法来检查Windows 10上的(Windows 10)RAM类型时。当谈到物理识别方法时，这些移动RAM模块看起来与台式机不同。通常它们要么是可升级的SODIMM模块，要么是不可拆卸的并焊接到笔记本电脑的主板上。
查看您能否升级旧笔记本电脑(Can You Upgrade an Old Laptop)，了解有关笔记本电脑RAM的更多信息。
你的类型是什么？
了解您的系统具有哪种类型的RAM，您可以了解计算机的性能应该是什么，以及您可以升级它的程度。
关于RAM 速度对(RAM speed has on)实际应用程序有多大影响总是存在一些争论，但是如果您的系统支持更高级别的RAM速度并且您的应用程序尤其可以从中受益，那么值得拥有这些信息。
How to Check the Type of RAM in Your Windows PC
RAM comes in various types, capacities, speeds and brands. If you ever want to upgrade your RAM or need to verify whether your system meets certain minimum requirements, you’ll have to check the type of RAM in your PC. While the jargon and numbers might seem daunting at first, it’s actually fairly easy to determine what RAM your system is equipped with.
A Crash Course on RAM
Before we get into the details of how to check the type of RAM your computer is equipped with, it’s important to make sure we’re all on the same page. RAM or Random Access Memory is a special type of very fast computer storage.
It’s different from your hard drive, which is relatively slow and non-volatile. That is, your hard drive doesn’t lose its data when the power is turned off. RAM, on the other hand, is volatile which, as you’ve probably guessed, means that its data disappears when the electrons stop flowing.
RAM is crucial in a computer, because the CPU (Central Processing Unit) needs to have swift access to the next set of data it has to process. So applications and relevant data are loaded into RAM, which ensures the computer can perform at its peak.
If you want to know more about the technical details of RAM, check out Understanding Types Of RAM Memory & How It’s Used.
Checking Your Motherboard Manual or Website
If you just want to know what type of memory your computer supports, perhaps for the purposes of an upgrade, you can find that information in the motherboard’s manual.
You can also Google the motherboard’s model number to find its product page. That will list the exact types of RAM that it supports. While this doesn’t tell you the exact speed and capacity of the RAM that’s currently installed in the system, it does tell you what type of DDR the system supports and at which speeds it supports it. It should also tell you what the maximum amount of RAM you can install is.
Use CPU-Z to See Your RAM Type
One of the easiest ways to get this information is by using a free application called CPU-Z. We have been using it for years to quickly check the most important technical details about a system. After downloading and installing CPU-Z, run the program and select the Memory tab as shown here.
Under the “General” section, look at “Type”. This tells you what generation of DDR memory your system has installed. Under “Size” you can see how much RAM is installed
Next, switch to the “SPD” tab. This is where the information is displayed as reported by each individual RAM module. If all the modules in your system are identical then you don’t need to switch between them under the “Memory Slot Selection” dropdown.
As you can see here, this computer is using Samsung memory with each module accounting for 8GB of RAM. This system is using DDR4-2667 RAM. You can check the number of available slots by counting them in the Memory Slot Selection dropdown menu.
You don’t have to worry about the Timings Table in the lower half of the window, but if you are curious about what those numbers mean, you can find out more in our RAM overclocking article.
Getting Your RAM Info from the Command Prompt or PowerShell
Sometimes you’re stuck in a situation where you don’t have access to the graphical user interface of Windows or perhaps you simply prefer the cold, infinite black depths of the Command Prompt. Either way, there’s a Command Prompt instruction that lets you see what’s currently installed in your system. All you have to do is type:
wmic MEMORYCHIP get BankLabel, DeviceLocator, Capacity, Speed
This shows you details for each RAM module as you can see here.
This shows you the size and speed of each memory module, but doesn’t tell you the type of memory. If you want that information, we need to add a few bits to the command.
wmic MEMORYCHIP get BankLabel, DeviceLocator, MemoryType, TypeDetail, Capacity, Speed
Under MemoryType you’ll see a number code. This code tells you what type of DDR the system has:
- 22 – DDR2
- 25 – DDR3
- 26 – DDR4
That’s just a selection of the most common RAM types, but if you see a number not listed above you can find a full list of memory type codes in Microsoft’s documentation.
Command Prompt is being phased out in favor of PowerShell, if you prefer to use that you can, but the command is a little different:
Get-CimInstance -ClassName Win32_PhysicalMemory | Format-Table Capacity, Manufacturer, MemoryType, FormFactor, Name, Configuredclockspeed, Speed, Devicelocator, Serialnumber -AutoSize
Check the BIOS
Regardless of what operating system your PC uses, you can often get information on what type of RAM your system uses before you even boot into it. The computer BIOS will usually have a section for memory, which should show you details about the installed RAM. This typically includes the generation of DDR you’re using, what size each module is and the speed at which it operates.
The method for entering the BIOS differs between computers. It’s usually a simple key press right after the computer powers on. For example, you many have to repeatedly tap the Delete key or perhaps F12 to enter the BIOS. The specific key is usually shown on-screen just as the computer starts, but it will also be in the motherboard manual.
Look at the Module’s Notches and Pins
The final way to determine which type of RAM your computer has is to physically inspect the memory modules. This will involve removing them from their slots, so only do this if you are comfortable with the process.
The details of the RAM modules may be readable on a label attached to the DIMM, but you can also identify them by the location of the notch, as seen in this illustration.
What About Laptop RAM?
Most of what’s written above applies to laptop RAM, at least when it comes to the software-based methods to check RAM type on Windows 10. When it comes to the physical identification methods, these mobile RAM modules look different from desktop ones. Usually they are either upgradable SODIMM modules or are non-removable and soldered to the laptop’s mainboard.
Check out Can You Upgrade an Old Laptop for more information on laptop RAM specifically.
What’s Your Type?
Knowing what type of RAM your system has empowers you to get a picture of what your computer’s performance should be and how far you can upgrade it.
There’s always some debate on how much impact RAM speed has on real-world applications, but then again if your system supports a higher class of RAM speed and your applications in particular can benefit from it, it’s worth having this information.
