Thank you all for your input. This will help me a bunch.
So I confirmed with the guy that it is indeed 2.5ghz
per core (thanks Capo) and asked him a new price with 32 gigs of ram instead.
500 gigs hard drives might not sound like much for you guys but like I said I'm going to have two of them (because of dual boot) and I'm used to my 82 gigs HD on this computer... And still have something like 15 gigs to spare even though I have plenty of games installed. This won't be a problem for me.
About this current computer... The motherboard is slowly dying. I don't think it would be worth the trouble to try to "repair" it... It is simply starting to fail only because it is too old. 10 years is probably about 8 years too much in regard to the normal life expectancy of a computer nowaday...
