From my experience, every new series of computer hardware is worse in quality than previous one. For instance, my previous workstation was Pentium 4 based, bought it in 2001. It's hard drive is even a year or year-and-a-half older. I replaced it with core quad in early 2008. That P4 tolerated seven years of heavy abusement, component changes, pull this out put this in, it always worked. When i got core quad, i placed that P4 as an internet gateway/VPN server for my home network. It currently works for over a year on the balcony with opened case. On the other hand, my core quad mainboard just fried out several days ago. I bought myself a terabyte drive, plugged it in, and in that moment, complete south bridge fried out, and that means SATA controller, USBs, everything. Ok, i've got warranty, but i will be without my main computer for a week or more, and i don't tolerate that kind of stuff easily.
Considering that i'm always willing to give 500 euros just for the CPU, mainboard and memory, i want it to last for years. They don't make them like they used to. So, don't bug yourself if it's an old and crappy computer. If it works, and it does your work, stick to it, regardless of the fact that it may be slow sometimes.
