从微软Vista系统开始，微软为系统引入了一项性能信息和工具功能，用来检测系统体验评分，这项功能可以用于简单的电脑硬件性能的参考，一直延续Windows7，Windows8系统，但是到了Win8.1预览版以及Win8.1正式版后，这项功能直接默认隐藏，不再直观向用户显示。
为什么说是隐藏呢？
因为系统体验评分功能，就是WinSAT，用于Vista，Win7，Win8的性能信息和工具功能。而升级到Win8.1后，系统属性里面不再显示系统体验评分，但是WinSAT功能依旧存在于系统，支持将当前的系统评分分值直接以XML文本记录。
如何找回当前的系统体验评分信息？
方法一：适合高级用户
1、win+X，选择（以管理员身份）命令符，输入winsat -help，可查看到和Windows系统评估工具相关的命令行用法：
2、继续输入winsat formal，启动Windows系统评估工具。
3、参考C:\Windows\Performance\WinSAT\DataStore路径，直接查找XML文本记录，默认有七个评分记录，分别为CPU，Disk，DWA，Graphics3D，GraphicsMedia，Mem，Formal。其中Formal.xml是对系统体验评分的汇总。
MemoryScore5.2对应内存RAM
CpuScore5.2对应处理器
GraphicsScore4对应图形性能
Dx9SubScore4.2对应DX9性能
GamingScore4.2对应游戏图形性能
DiskScore5.9对应主磁盘性能
方法二：适合普通用户
原理：添加PerfCenterCPL.dll应用程序扩展到Win8.1系统Windows目录下，并手动加载。即可在系统中添加一项性能信息和工具功能，直观显示Win8.1的系统各项指标的性能评分。
步骤：
1、下载PerfCenterCPL.dll应用程序扩展合集：
并复制system32和sysWOW64所有文件到Win8.1系统Windows目录下，支持32位系统和64位系统。
2、复制以下内容，另存为PerfCenter.reg，导入注册表，添加性能信息和工具功能
- Windows Registry Editor Version 5.00
- [HKEY_CLASSES_ROOT\CLSID\{78F3955E-3B90-4184-BD14-5397C15F1EFC}]
- @="Performance Information and Tools"
- "System.Software.TasksFileUrl"="Internal"
- "InfoTip"=hex(2):40,00,25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,\
- 6f,00,74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,\
- 00,50,00,65,00,72,00,66,00,43,00,65,00,6e,00,74,00,65,00,72,00,43,00,50,00,\
- 4c,00,2e,00,64,00,6c,00,6c,00,2c,00,2d,00,32,00,23,00,69,00,6d,00,6d,00,75,\
- 00,74,00,61,00,62,00,6c,00,65,00,31,00,00,00
- "LocalizedString"=hex(2):40,00,25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,\
- 6f,00,6f,00,74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,\
- 00,5c,00,50,00,65,00,72,00,66,00,43,00,65,00,6e,00,74,00,65,00,72,00,43,00,\
- 50,00,4c,00,2e,00,64,00,6c,00,6c,00,2c,00,2d,00,31,00,23,00,69,00,6d,00,6d,\
- 00,75,00,74,00,61,00,62,00,6c,00,65,00,31,00,00,00
- "System.ApplicationName"="Microsoft.PerformanceInformationAndTools"
- "System.ControlPanel.Category"=dword:00000000
- [HKEY_CLASSES_ROOT\CLSID\{78F3955E-3B90-4184-BD14-5397C15F1EFC}\DefaultIcon]
- @=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,\
- 00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,50,00,65,00,\
- 72,00,66,00,43,00,65,00,6e,00,74,00,65,00,72,00,43,00,50,00,4c,00,2e,00,64,\
- 00,6c,00,6c,00,2c,00,2d,00,31,00,00,00
- [HKEY_CLASSES_ROOT\CLSID\{78F3955E-3B90-4184-BD14-5397C15F1EFC}\InProcServer32]
- @=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,\
- 00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,00,68,00,\
- 64,00,6f,00,63,00,76,00,77,00,2e,00,64,00,6c,00,6c,00,00,00
- "ThreadingModel"="Apartment"
- [HKEY_CLASSES_ROOT\CLSID\{78F3955E-3B90-4184-BD14-5397C15F1EFC}\Instance]
- "CLSID"="{328B0346-7EAF-4BBE-A479-7CB88A095F5B}"
- [HKEY_CLASSES_ROOT\CLSID\{78F3955E-3B90-4184-BD14-5397C15F1EFC}\Instance\InitPropertyBag]
- "ResourceID"=dword:00000064
- "ResourceDLL"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,\
- 00,74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,\
- 50,00,65,00,72,00,66,00,43,00,65,00,6e,00,74,00,65,00,72,00,43,00,50,00,4c,\
- 00,2e,00,64,00,6c,00,6c,00,00,00
- [HKEY_CLASSES_ROOT\CLSID\{78F3955E-3B90-4184-BD14-5397C15F1EFC}\ShellFolder]
- "Attributes"=dword:a0000000
- "WantsParseDisplayName"=""
3、复制以下内容，另存为WinSAT.Bat，批量运行，开始系统体验评分测试。
- @echo off
- regedit /s PerfCenter.reg
- regsvr32 /s "%SystemRoot%\System32\PerfCenterCPL.dll"
- regsvr32 /s "%SystemRoot%\System32\WinSATAPI.dll"
- regsvr32 /s "%SystemRoot%\System32\diagperf.dll"
- regsvr32 /s "%SystemRoot%\System32\perftrack.dll"
- regsvr32 /s "%SystemRoot%\SysWow64\PerfCenterCPL.dll"
- regsvr32 /s "%SystemRoot%\SysWow64\WinSATAPI.dll"
4、运行后，打开控制面板，选择小类别，即可找到“性能信息和工具功能”，打开即可显示系统当前的系统评分内容。
▼终于找回隐藏的系统体验指数
