Imagine an I7, on a 64 bits OS, bought this next summer and all that matter for that person is to *OVERclock* to gain a slightly higher kink in'a jink for awhile.
Specs of Hardware & recommendations on software boxes are there for reason, read - carefully.
In the meantime, wait for next year. Duals+Quads are gone done stone age drones of the past & underclocked by today's standards, and surprisingly this situation will outlast the week long usage of a brand new PC just plugged. The only way to increase capacity (worth the risk, i repeat) is to have the RIGHT devices in a pre-designed well-balanced time-guaranteed tower.
Unless of course, you have sooooo much cash to spend that changing a PC every year for you is routine & a must.
-- Boost your memory slots to the maximum suggested, it may help.
-- Monitor you heat sinks values within the 50°C+/- heat limit by Bios warnings, and check the fan speeds for dust clugs, it will overclock by itself.
-- PSU ratings can help filling every last PCIe expansions available on the Mobo. Do you really need all of it & GPU wise, sli fastening included?
It's not the ghz off the screwed or snapped in CPU (underneath the big fan), it's the entire array of components together both in quality & quantity as a whole that matters as manufactured for awhile.