This is my first on the forums and would like to add my experience with this issue.
I have been having the same problems with overheating i7 4790k with an Asus Z97 Pro motherboard. The idle temperatures are in the 30C's and ambient temps are around 22C. There are 4 120mm Corsair Performance intake fans and 2 80mm exhaust fans in the case to also help keep things cool. First, I started off using the stock cooling fan and at stock settings without ANY overclock, the CPU was hitting high 90C's and up to 100C running CPU stress tests within the first few seconds of running them before I quickly shut it off. These tests include Prime95, OCCT, EVGA OCX Scanner, and HeavyLoad. Every single one of those stress tests gave the same results. After checking to make sure cooler was on correctly and reapplying paste, I checked again and there were no changes. So, I swapped out the stock cooler with a SilverStone NT01-Pro with 4 80mm cooling fans attached and still, the temps were in the 90C's after 3-4 minutes of running said tests. I then went out and purchased a Corsair H60i liquid cooler and now the temperatures are hitting 89C-92C. I've taken out and reseated all the coolers using different types of "top-of-the-line" pastes, yet nothing changes the temperatures from reaching in the 90's.
So, last week I contacted Intel customer support. They sent me an email asking me to download and run the Intel Processor Diagnostic Tool. The test ran and passed with temps reaching mid 60C's. When I responded back to the email with results of tests along with pictures of temps hitting 89C with OCCT, the response was "[T]he processor is fine and the temperature with other tool shows that the processor is high but in this case if the Intel® Processor Diagnostic Tool passed it means that the processor is fine and the temperature is below maximum". That's the direct quote from the email.
Am I supposed to be satisfied with this response? Does anyone have any experience with similar situation? I'm not sure what the Intel PDT tests, but I highly doubt it is taking the CPU to max or even high CPU loads. Intel has publicly stated that the i7 4790k should have no problems overclocking to 5.0Ghz, yet we can't get the temperature to stay cool on STOCK, yet "the processor is fine"?? How does that make any sense? I have responded to the above email to let them know that I am not satisfied with that response. I will update on how they respond.
