The base Iolo System Mechanic (version 21, reviewed here) has a list price of $49.95 per year, and is compatible with all PCs running Windows 10/8/7 (Windows Vista and XP PCs work with System Mechanic versions up to 16.0.0.10). So why the tepid recommendation? You don't necessarily need Iolo System Mechanic to get most of these benefits-if you're the intrepid type who doesn't mind diving deep into Windows 10 to find similarly effective tools. Plus, the latest version improves several longtime features, while adding a revamped, attractive interface. But is the app worth its $49.95-per-year subscription price? Maybe. Iolo System Mechanic improves your PC's performance by defragging the hard drive, deleting junk files, tweaking CPU and RAM usage in real time, and executing other computer-enhancing tasks. A tune-up utility, such as Iolo System Mechanic, can whip your machine back into shape with just a few clicks. It's frustrating when your PC's performance slows to a crawl, but that doesn't mean it's time to purchase a new computer.

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