Why do you say your dell studio is on its last legs? Is it currently running really bad while previously it ran very well?
Generally, if your system is running it should then have the capacity to operate exactly as the day you took it out of the box. I say generally one for one reason, which is if you are having hard drive issues or maybe issues with capacitors on the motherboard. Both quite uncommon to have problems with. More common is simply to have problems with viruses, adware, etc.
Have you considered reinstalling the system? A fresh install might get it back into good condition again. That might save you from having to spend whatever you will spend on a new computer.
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