It's not really much of an upgrade, if at all. An i7-2600 is still a reasonably decent CPU, and while a Ryzen 3 1200 might offer slightly faster performance per core, it lacks the SMT/Hyperthreading that will help the i7 in applications that make use of more than four threads. If you already own the i7-2600 and are looking for an upgrade, you'd probably want to move up to at least a Ryzen 1600 or an i5-8400, both offering 6 physical cores. The i5-8400 has slightly faster per-core performance than the Ryzen 1600, but the 1600 has SMT, which can help it handle applications with more than 6 threads better. The Ryzen 2600 and 2600X will also be launching later this week, though all these processors will of course cost more than a...