RamCleaner allows your computer to run faster and uses your computer's RAM more efficiently. You can free up a specific amount of RAM to the CPU at any time allowing your system to have more memory available, so making program execution faster because as free memory it is ready and waiting. It can automatically Free-UP RAM if a critical amount of Free RAM is reached preventing your system's performance from being degraded. RAM can be recovered at regular time intervals. Defragments RAM, recovers RAM from the operating system and applications, recovers memory leaks, and runs in the background keeping your system in peak condition.
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Proga like these are not good to use - They cause more probs than good .. Worst case scenario is having to restore your PC .. I would advice not using them ..