I have an Intel Core i7 4770 (not the "K" model) Haswell CPU. I do not overclock and I use the stock heatsink/fan (which came pre-applied with thermal paste). When idle the temperatures are around 20-30 which I believe is pretty good for Haswell. But when gaming on max settings it averages around 60-70 degrees C. At various stages throughout the game it's reached 75 and it's peaked at 80 degrees C. It doesn't stay at 70-80 for very long...just during big explosions and fighting scenes, for example. The average operating temperature while gaming is 60-70 degrees. Now, my understanding is that Tj. Max on haswell is 100 degrees C. But TCase Max is 72.72 Degrees C. Based on the above info my CPU temperatures are breaching TCase Max while gaming...sometimes. I know Haswell runs hot but is this normal? I appear to have good case airflow (idle temps are normal and GPU temps on my GTX 760 are between 50-60 degrees C...my GPU can go as hot as 130 degrees C so that's perfectly acceptable). Also, just to clarify, I don't have any issues while gaming. My PC hasn't powered off or given me any BSODs. I did also stress test both my GPU and my CPU using furmark. My GPU passed furmark and the temperatures were around 65-75 degrees C during the test which is way within the Max 130 degrees C. My CPU load during the CPU burner test reached 100% on all cores. The temperatures went as high as 100 degrees C while doing the stress test but were usually in the 90s. Again, had no issues and the CPU survived the stress test. As soon as I ended the stress test it didn't take long for the CPU temps to drop back down to the normal 20-30 degrees C idle temperatures. So it appears that my stock heatsink/fan is working like it should be working in terms of cooling. As I'm not overclocking I don't really need a special fan or special thermal paste so I was wondering whether my temperature are normal or high...even for haswell? I have five case fans in my case, which is a Zalman Z11 Plus.