Loudoun County, Virginia (Source: Genealogy Trails History Group) Loudoun County, Virginia (Source: Wayback Machine) Loudoun County, Virginia Genealogy (Source: USGenWeb)
The Intel Core i7 Processor is a top of the line quad-core processor. The games you're referring to are probably referring to dual-core processors. A 1.73 ghz i7 is significantly faster than a 2.4 ghz i3. Don't worry, you're good to go.
With that wisdom in mind, a notebook or desktop powered by an Intel Core i5 or Core i7 is likely to be the best investment, unless the buyer is financially solvent enough to shell out thousands of dollars for a powerhouse with Xeon inside.