No you are just a clueless n00b that wouldn't know his machine were having any sort of difficulty unless it completely failed to boot.
Macs are just PCs. Typically, they are trailing edge PCs with no good means for upgrade or maintenance. They use the same random spare parts as any other PC. Some models of Dell and whatnot are actually very good for Hackintoshes because of this.
That's funny because the first generation of Mac I purchased had insufficient memory to deal well with the version of MacOS that shipped with it and graphics apps threw up warnings about Quartz clearly indicating that the video chip was not up to snuff.
The missus ditched the Mac I gave her because of how Apple likes to do things that seem gratuitiously different. That and lack of support for legacy Win32 software. Fancies her iPad though.