overclocking was never healthy anyway...
and if you do it properly your computer sounds like a jet plane or has liquid cooling..
and might i remind you that games have started to utilize multicore. So have video cards.
(thats probably why GTA IV is running smoothly with 1500 of 500mb resources used, maxed out, native res, right?)
graphics are outdated perhaps yes, but they are upgradable although theyre only used in windows... i cant think of a thing why would i use a GTX280 in OS X. really. To play cider ported games? no thanks, i rather run bootcamp...
so, counting that you have 8 cores you still have more than any gaming rig on the planet.
and to be honest i dont remember reading that anyone could run GTA IV decently with a dated quadcore. especially with 0,5gigs of vram.
but yeah,its a bad idea to get a mini anyway.. especially if its not updated soon.
but as i said, its not a gaming rig, i wouldnt get one for games solely, but i definitely play (and am able to play) them on it.
oh, and im running xp64 which isnt (or at least wasnt at the time) supported by bootcamp. but it runs mighty fine!! and at least i get all 4gigs of ram in it. and will read another 4 when i get them too.