What does Windows SP mean? What does Service Pack mean?

SP is the abbreviation of Service Pack, meaning a patch package.

Microsoft has many vulnerabilities in its operating systems and software products. Microsoft has to release various hotfix patches frequently, but for general users, checking whether a hotfix is installed on your computer is troublesome. Downloading and installing various hotfix is also cumbersome. To solve the problem, Microsoft began to release the SP patch package, the SP patch package contains all hotfixes released before the SP release date. That is to say, hotfix is a single patch for a certain problem. SP contains all hotfix patches before the SP release date. Therefore, as long as you download and install the SP patch package, you do not need to download the hotfix before the SP release date. The SP patch packages are arranged in the order of the release date, so that SP1, SP2, SP3 ...... And so on.
For Windows operating systems, the SP patch package can be superimposed. That is to say, SP2 contains all patches in SP1, SP3 contains all patches in SP2 and SP1, and so on, for example, Windows 2000 now has the SP1, SP2, SP3, and SP4 patch packages.
However, the SP patch package of office products cannot be overlapped. For example, SP2 only contains all patches from the SP1 release date to the sp2 release date, and so on. Therefore, for Windows products, you only need to download and install the latest SP patch package. For office products, you must download and install all sp patch packages.
Tip: If you want to know which patches have been applied to the system, click Start> set> Control Panel> Add/Delete.Program", In the" Add/delete programs "window, the option such as" Windows XXXX patch package-kb 823980 "is the patch you have installed for the system. Or click Start> run "? In the displayed dialog box, enter "Regedit" to open the Registry Editor? Find the following branch? HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows NT \ CurrentVersion \ Hotfix ?, Observe the sub-keys under the hotfix to see which patches are installed on the system.

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Verify the truth about how xp sp3 improves efficiency
Without a doubt, in addition to the continued attention of Vista SP1, XP SP3 has become more attractive to users because Microsoft has not officially launched SP3, therefore, many friends who have the honor to use SP3 have published their feelings after use through various channels, and have also aroused discussion in various forums.
There is a fierce debate over how much SP3 can improve system performance. There are different opinions at a time, and there are four rumors: There are many improvements, but there is no change. However, many of these ideas are based entirely on personal feelings, and there is not much comparability and authority. In this issue, we will evaluate these rumors to see how much efficiency SP3 can improve.
Rumor 1: boot speed increases by 10%
Rumor: After you install SP3 on your own, the boot speed will be significantly faster and can be improved by 10%. However, many people doubt this and question whether the data obtained by the other party is true.
My verification method: Go to the Dual Boot menu and start timing from the Windows XP startup item until the desktop is successfully started. The unit is accurate to milliseconds.
Test results: in the "Boot speed" project, SP3 is shortened by 8 seconds and 19 seconds compared with SP2, And the increase is 23%.
Conclusion: from the test results, this rumor is true. If it is a completely new or pure system, the effect will be more obvious. We believe that some of the introduced kernel optimization mechanisms of Vista and Server 2008 play a role in improving the startup speed of Sp3. As for some reports, the reason for the slow boot speed after SP3 is installed is probably because the optimization software has been used before, and Sp3 will restore the default settings.
Rumor 2: file transmission speed increased by 30%
Rumor: When copying and moving files, the transmission speed is greatly improved. If it is on the same hard disk, the maximum speed can be increased by 30%.
The verification method is as follows: copy a single ISO file of 161 GB between different partitions of the hard disk, and copy image files with a capacity of MB. The unit is accurate to milliseconds.
Test results: When copying a single file of 3.1gb, SP3 is shortened by about 22 seconds compared with SP2, And the increase is 21%. When copying a 161 image file of 78.1mb, SP3 is shortened by 9 seconds and 42 compared with SP2, And the increase is as high as 69%.
Conclusion: from the test results, this rumor is true, and we believe that the low-end computers should have a more obvious change. From this perspective, updating to SP3.
Rumor 3: Application Software increased by 10%
Rumor: when running WinRAR, Photoshop, AutoCAD, word, and other application software, the running efficiency is improved, and the speed of opening the document can be increased by 10%.
Our verification method: Here, we use Microsoft Word 2003 and WinRAR 3.71, which are frequently used by common users, use Word 2003 to open a document containing 72 images and the size is 10.4mb. The unit is accurate to milliseconds until the document's images are fully displayed; as for WinRAR 3.71, it uses its own "performance and hardware testing.
Test results: when you open the office document, it takes nearly one second to completely display the image. It should be said that it is not obvious and the user should be completely acceptable, after all, 72 images in a Word document are rare. When running WinRAR's "Performance and hardware test", the SP3 score is KB/second lower than that of the sp2 system, the decrease is close to 10%. It seems that SP3 may have a certain impact on compression and decompression.
Conclusion: The test results show that rumors are not true. We believe that this may be due to the addition of many new security features in SP3, which leads to a slight decrease in the running efficiency of the application software, but the overall decline is not very obvious.
Summary: In general, SP3 has brought a lot of security patches to Windows XP users, and has greatly improved the boot speed and file transmission speed, we recommend that you install SP3 immediately when you are pursuing system performance and failing to promptly install system patches.
If you use various applications frequently and the security work is well performed, system patches have been installed in a timely manner. To avoid reducing the efficiency of application software, you can choose not to install SP3. Logistics Distribution Network http://wlphw.com/QQ online: 471226865