QUOTE(filage @ Oct 31 2014, 09:35 PM)
At moment, think I'll just opt for the RAM option if I come across some offers (there's one of you offering it free, thanks but I'm not Selangor), scared AGP is hard to find or expensive. I don't intend to spend too much to upgrade the existing hardware because I know it's outdated like changing the processor or mainboard. Would be happy if Facebook can load smoothly though.. LOL..
Currently each time open Facebook, scroll down a bit freeze half a minute and scroll up also. Also webpages with a lot of scripting like the flight radar tracker site also unstable. Other than that, open Lowyat for example is smooth. And play video also smooth with the existing spec.
Oh ya, regarding outdated browsers, I think don't want to install overly outdated browsers cos it may have security issues. Lightweight ones I have tried Opera, the best so far (except heavy script website like FB). K-Meleon seems to be buggy, always close because of some errors, don't feel like using that anymore. I tried this called Midori during my search for lightweight browser, it isn't really light in my opinion after using.
So overall, just intend to use it for web browsing (hopefully if can FB smoothly would make my day). And watch some movies, which has satisfy my target at the moment. Not a gamer so don't think will be using any games on it.

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A lot of good info thanks.
That freeze and slow downs are most likely due to the swap file, that is the operating system is using the hard drive as part of the "virtual memory" system. Having more memory help to reduce this effect (less swap file operations). Generally AGP graphic cards are easy to find, just that its hard to get those higher end ones (such the that ATi Radeon HD4670 I've mentioned earlier). Generally any AGP 4X graphic card or AGP 8X graphic card will do.
QUOTE(filage @ Oct 31 2014, 09:43 PM)
Probably 100 or 200 max.

Unless it is looks promising to become a monster production machine, but I think p.4 still can't compare to those multi core today right? Don't think it's worth to overly upgrade it. So for browsing, words and watch movie what I target at moment.
That should be enough for additional memory, an AGP graphic card and possibly a faster processor. Can also opt for the package pointed out by
TristanX as well...