[SOLVED] old pc processor upgrade i5-3570

Unfortunately, it can be tricky to find dirt cheap. Used ones generally go for around $130 these days. The top mainstream CPUs in an Intel generation have a knack for retaining a significant amount of value; the 3570k can be found for just $40.

It was a fun CPU; I ran my 3770k until some issues with the USB controller motivated me to upgrade it in 2018. But I'd be hard-pressed to tell you it's a good idea at this price when you already have a 3570k. It being a pre-built is also a complicating factor since there will be rather poor motherboard documentation.