While I understand not every core is identical and are in different locations on the die, if your temps are varying that much on a per core basis ESPECIALLY with water cooling, that's what I've heard...

That's a solid build for your purpose. Monitor your temps, though. I've recently upgraded, but my old poorly installed Hyper 212 Evo in a Cosair 750 Airflow default fan setup (two 140mm front intake,...

An R9 390 or GTX 970 might be good, I have personal experience with a NVIDIA 970, but I paid less for it three years ago than you can find it new now. Here's a video showcasing 60fps settings for...

Glad to see this issue got fixed. For easy reference, you shouldn't be getting high temps like that even with a lidded i7 8700k with air cooling - especially not an AIO water cooler. Maybe more so...