My i7-4790k(stock clocks) keeps overheating when running Prime95(100C, has to underclock itself to avoid damage), Intel Burn Test(90C-95C), and rendering video(85C-90C). Most cores idle at 30C-33C but one of them, Core 1(not Core 0) to be exact, runs 5-10 degrees hotter depending on what I am doing. I also use an aftermarket cooler because the stock cooler made my temps worse and I use Arctic Silver 5 as a thermal paste. No matter how many times I reseat the cooler and apply new thermal paste(I even clean it with ArcticCleaner; lint free everything), the temperatures always show the same patterns. My cousin has the same rig as I do(same thermal paste, CPU, cooler, case) and his temperatures never go above 80C even on full load. I'm 100% sure that I applied the right amount of thermal paste(I even tried different types of applications such as a line and a "pea size") and I even double checked to see the pins were fully inserted into the motherboard. Can anybody help me? Could it be that I got a faulty CPU? Thank you.
I am sorry you are having problems but let me help you.
Please try the steps mentioned here:
You can find more information here:
My best recommendation at this point, is to update the BIOS in your computer provided by the Computer Manufacture. We have received reports from other users saying that updating the BIOS the issue did the trick.