Yes, depending on how much you can get one for on the used market or find a NOS unit for (New old stock), it is a worthwhile upgrade. Actually, depending on WHAT you are doing and how beneficial the additional cores on that Ryzen SKU are for that process, it might even be a better performer because it absolutely has better single core performance and only lacks a few cores and threads. Anything that is not highly optimized for multithreading, will perform better on the 4790k.