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Article ID: 936613 - Last Review: May 16, 2008 - Revision: 3.1

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SYMPTOMS

You run the Windows Experience Index (WEI) to measure the capability of the hardware and software configuration on a Windows Vista-based computer. After you do this, the score for 3D business and gaming graphics performance may not accurately represent the actual performance of the gaming graphics. For example, the actual performance of the gaming graphics may be less than you expect, based on the WEI score.

CAUSE

This problem occurs because the algorithm that is used by WEI mistakenly attaches too much importance to memory bandwidth. This behavior causes misaligned scores, especially for low-end graphics products.

RESOLUTION

Service pack information

To resolve this problem, obtain the latest service pack for Windows Vista. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
935791  (http://support.microsoft.com/kb/935791/ ) How to obtain the latest Windows Vista service pack

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support (http://support.microsoft.com/contactus/?ws=support)
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

No prerequisites are required.

Restart requirement

You must restart your computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
Windows Vista, 32-bit versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Shadercache.ps_2_0Not applicable7,401,89607-Jan-200705:53Not applicable
Shadercache.vs_1_1Not applicable11,276,83207-Jan-200705:53Not applicable
Update.mumNot applicable2,46819-Jun-200713:35Not applicable
Winsat.exe6.0.6000.206223,217,40819-Jun-200700:55x86
Winsat.prxNot applicable3,92207-Jan-200705:53Not applicable
X86_0f3e10ded5608294c741ff0fe9c5bc0d_31bf3856ad364e35_6.0.6000.20622_none_5504cd7978f34153.manifestNot applicable71819-Jun-200713:35Not applicable
X86_8dd0cb3b59c76a01b5fc507ff6f3b50f_31bf3856ad364e35_6.0.6000.20622_none_d6bf9e22559a798d.manifestNot applicable71519-Jun-200713:35Not applicable
X86_microsoft-windows-w..emassessmenttoolapi_31bf3856ad364e35_6.0.6000.20622_none_e22e1f15139fe008.manifestNot applicable17,35119-Jun-200713:38Not applicable
X86_microsoft-windows-w..ystemassessmenttool_31bf3856ad364e35_6.0.6000.20622_none_7a24b4d3d35f753c.manifestNot applicable14,16019-Jun-200713:38Not applicable
Winsat.mofNot applicable1,54507-Jan-200705:52Not applicable
Winsatapi.dll6.0.6000.20622386,56019-Jun-200702:06x86
Winsatuninstall.mofNot applicable48707-Jan-200705:52Not applicable
Windows Vista, 64-bit versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Amd64_545edf3ad8c0d480e678747841f97de8_31bf3856ad364e35_6.0.6000.20622_none_9815a22958722277.manifestNot applicable71919-Jun-200713:35Not applicable
Amd64_cc76cba241eb8da09f77a08591eedf49_31bf3856ad364e35_6.0.6000.20622_none_50faa2dd0eab51eb.manifestNot applicable1,08419-Jun-200713:35Not applicable
Amd64_microsoft-windows-w..emassessmenttoolapi_31bf3856ad364e35_6.0.6000.20622_none_3e4cba98cbfd513e.manifestNot applicable17,38119-Jun-200713:42Not applicable
Amd64_microsoft-windows-w..ystemassessmenttool_31bf3856ad364e35_6.0.6000.20622_none_d64350578bbce672.manifestNot applicable14,47019-Jun-200713:42Not applicable
Shadercache.ps_2_0Not applicable7,401,89607-Jan-200705:53Not applicable
Shadercache.vs_1_1Not applicable11,276,83207-Jan-200705:53Not applicable
Update.mumNot applicable2,46819-Jun-200713:35Not applicable
Winsat.exe6.0.6000.206223,891,20019-Jun-200701:19x64
Winsat.prxNot applicable3,92207-Jan-200705:53Not applicable
Winsat.mofNot applicable1,54507-Jan-200705:52Not applicable
Winsatapi.dll6.0.6000.20622450,04819-Jun-200703:15x64
Winsatuninstall.mofNot applicable48707-Jan-200705:52Not applicable

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows Vista Service Pack 1.

MORE INFORMATION

For more information, click the following article number to view the article in the Microsoft Knowledge Base:
824684  (http://support.microsoft.com/kb/824684/ ) Description of the standard terminology that is used to describe Microsoft software updates

APPLIES TO
  • Windows Vista Home Basic 64-bit Edition
  • Windows Vista Home Premium 64-bit Edition
  • Windows Vista Business 64-bit Edition
  • Windows Vista Enterprise 64-bit Edition
  • Windows Vista Ultimate 64-bit Edition
  • Windows Vista Starter
  • Windows Vista Home Basic
  • Windows Vista Home Premium
  • Windows Vista Business
  • Windows Vista Enterprise
  • Windows Vista Ultimate
Keywords: 
kbautohotfix kbvistasp1fix kbbug kbfix kbprb kbexpertisebeginner kbwinvistapostrtmfix kbqfe kbhotfixserver KB936613
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