i have comcast, ethernet connection , buying a new desktop: what makes faster internet speed : ram, cache, or 4-core vs 6-core and cpu speed ? i play games and like to have craigslist, gmail, etc. running while playing a game; i think this is multi-tasking ? just bought an alienware aurora r4 for $500, 4-core i7 2.37 , not sure what cache, 8gb ram; might be somewhat faster than my last 4-core with 4gb ram; i could use a 2nd desktop, but want it to be faster than my refurbished alienware, although the alienware is not slow compared to what i'm used to; don't want to spend more than $2000; i don't want to build my own desktop, not technical enough; thanks