Last Thursday before going to bed, I played a game of Crysis 3. Without any particular reason, I ran Realtemp on the background. When I exited the game, I took a look at the maximum temps that were recorded by it.
It was worrying. This was at an ambient below 25C. And this is just gaming.
I was running the Scythe Gentle Typhoon 3000RPM fan which is cooling the radiator of the Antec Kuhler 620 (first edition) at around 1800RPM. The fan speed was lowered from the fan controlling software built into the UEFI of the Asus Z97i Plus motherboard.
I let the fan run at its rated speed and that made the temps drop by 10C while playing Crysis 3. It was OK, but still too high for gaming.
However, the next morning, I wanted to transcode a video in Handbrake and this sent the CPU temps to a whopping 98C. This was with the fan at full speed!!!