Sorry I'm late to the party here, but I'll try to help.
All your talk about getting into a 'Dell' or 'core i3' tells me you might be shopping out for a new desktop PC for this? Don't! You'll spend a ton of money on something you don't really need.
Aside from the aforementioned Soul Calibur III, which we've already discussed may not be playable in anything other than a playstation, what other games are you trying to play?
Let me steer you towards something with an intel e8400 or e8500 in it. You'll get really good bang for your buck if you get into one of those Core 2 Duo's and overclock it to 4.0ghz.
If you don't want to roll your own on the overclocking thing, then fine. Spend 3x more money, and buy into a core i5 2500k or core i7 2600k. Just be sure you get the 'k' versions of the processors, because once you get a taste of a fast processor, you'll want to make it go faster....faster.....faster....
Tell us what games you want to play, and I'll build a rig for ya