When you do a search for best registry cleaner and cleaning software, there are hundreds of products.

All of them boast around 100% performance gain and tempt you to shell money on them.

But are they really necessary?

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There is not even a maintenance software for this purpose in Windows 7 and 8.1.

How to Believe my Words?

These 3 cleaning tools are one of the leading products for system/registry cleaning in the industry.

Case Study Cleaning Software 2015

One of these tools even claimed to improve thespeed of your PC by 47%.

Another product is highly popular in this category andpromoted well in the Internet industry.

But after-all, what the results say?

Case Study Cleaning Software 2015

A Deeper Insight into the Case-Study?

As each system is different from another with its own unique hardware, software, uninstalls and installs.

One should not come to conclusion, by just believing this case-study.

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you oughta study your own system if you want to come to a conclusion.

My personal experience of 15 years of Windows experience goes with the author of the case-study.

First-of-all, my words are to be taken for Windows 7 and 8.1 systems only.

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But in 2015, that is not the case.

If you observe the Microsofts page of for the use of cleaning software, you might see it here.

(https://support.microsoft.com/en-us/kb/2563254).

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More Details on Windows Secrets Case-Study?

The author makes it clear that all review of PC-cleaning software share a major obstacle.

The results of the performance tests only apply to the test machine.

Case Study Cleaning Software 2015

Hence, published test results only used as a general guide.

Note: Before running a third-party cleaner on any PC, just backup your work and registry).

One runs Win7 SP1 and the other runs Win8.1, upgraded from Win8.0.

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Both are real-life Windows setups Ive used routinely for work for years.

For a full configuration you’ve got the option to look at the original article.

To select which apps to install, I used the then-current user-popularity ratings reported by Download.com.

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Then the above 3 tools are used one by one and compared with the above results.

For example,

The first word only changes for Win 8.1 system-setup.

Are you to Dump all the Cleaning Software/Registry Cleaners/System Cleaners?

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If you are still using the old legacy systems, they might still be useful.

But on Win 7 and 8.1, they are not of much significance.