The Broadwell-E has a safe voltage limit.
The Broadwell-E has a safe voltage limit.
You're wondering about the safe voltage levels for your 6800k when running at around 1.35 volts on the core during a 4.4ghz overclock. You're concerned about maintaining good performance and longevity, especially with temperatures ranging from 25 to 70 degrees. It's wise to consider lowering the overclock slightly or keeping the voltage stable to ensure reliability.
What motherboard are you using? It should be checking the VRM temperatures. As long as the CPU temperatures remain stable, I wouldn't be too concerned about the CPU's lifespan, especially if you're planning to upgrade soon. The VRM components on the board are another point to watch out for. In the recent 6800k review I came across, it was noted that reaching 4.4GHz took around 1.4V with that chipset, so 1.35V is quite reasonable.
You're using the Asus x99 Strix and suspect the VRM is being monitored, but you're unsure how to check it in HWMonitor.