Despite the frantic development of tablets and other mobile devices, the current computer is still considered the main tool for work and has not yet been replaced. There are assumptions that are believed to be true when you use the computer, but actually not so.
Need to defrag the hard drive regularly
Actually you do not need to do that. The PCs Windows built-in defragmentation tool to automatically run scheduled groundwater available. On OS X, Mac also file system (HFS + OS X) automatically defrag the files, often called process HFC (Adaptive Hot File Clustering).
In addition, many modern computers use solid state hard drive or SSD flash storage drives. With this format the hard drive, you absolutely can not fragment them because it will damage the hard drive instead of improving operational performance.
virus and spyware slowing down your computer
Whenever a computer running slow, you often think about virus or spyware (spyware). While this possibility may be true, but most of these types of malware today is created to make a profit for their owners, so they must be designed to stabilize and smooth running on the computer. Therefore, even if your computer is infected with malicious software, the machine performance is not very affected by this.
Instead, the cause for computer running slow is mainly caused by too many applications running simultaneously, plugins and add-on unnecessarily consume system resources, misappropriation of RAM, hard drive space or cause the hardware problems.
The software "cleanup" Premium will improve performance
Maybe we've seen ads like "Download X software to increase your PC's performance by 300 times". The program of this type always promising clean up registry errors, download driver updates, uninstall the software can not be deleted manually, or cleanup of PC errors.
Indeed, why? It just ads, you do not need them whether the computer is running Windows, OS X or Linux. Worse, the program of this type is often used to install malicious software plug - such as adware and spyware - on the computer and rarely bring practical benefits to the user.
You do not need antivirus software
In fact you always need antivirus software. First let's talk about the Mac line. virus appeared on the platform rather less, not because it's safe, but because hackers tend to focus more on Windows, OS is far more common.
Talking about the concept of "safe", you would never safe when using the computer. Every time you turn it on, you need the web, do something necessary network connections, download photos or files from the Internet on ... in general will have a lot of "pitfalls" wait. It does not use any antivirus software on the computer was a mistake.
Delete the contents on the hard disk will wipe them off the computer
The reality is not so. When deleting data, only the visible part of us is gone on the interface used, the remaining data remains on the hard drive and just totally lost when they are overwritten.
For simplicity, imagine your data footprint on the floor like dust. When you leave the room, footprints are still there and they only disappear when there are more people out into the room stepped on the footprints that make them fade. This rule is the same as the way of data storage operations. The deleted file is marked ready for overwriting other data. But before being overwritten, they are still there and can be recovered using appropriate tools.
To avoid that hole, use the Firefox / Safari / Chrome / IE when surfing
In fact, just the browser execution environment for them evenly JavaScript and extent exploited or hacked. You should also know that hackers often attack to the add-ons and browser plug-ins but rarely targeted in the browser itself.
Core chips, ... more RAM, the machine will run faster
Basically the same, however, when using multiple cores, more RAM, and mobile devices such as laptops which consumes more battery. When adding RAM, your computer will operate more efficiently by reducing some dependency on virtual memory. There will be more complex core bit chip. Not every multicore chip, the machine will run faster. For example, high-end quad-core chips always have higher performance than 8-core chip low.
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