Here are a few sample configurations for some common workloads.
High End Core i7 with Windows 7
Some trading applications, such as Fidessa and VBA enabled Excel spreadsheets, are not 64 bit compatible and therefore will not fully utilise all the cores of modern processors. If these are your primary workloads then fewer faster processor cores are essential. Also if you want to run Windows 7 then the latest 7th generation, Kaby Lake, processors are not supported.
- Intel Core i7 6700K Processor