fi3er wrote: ↑
Mon Feb 12, 2018 7:23 pm
question 2: on the above i9 system, overclocked to 4.0Ghz, rampage VI motherboard, with h110i cooler, the temperatures are reaching 99 deg Celsius. I expect thats too high to have going on for 12hrs overnight renders right? What do you reckon the safe max temps are?
99 deg Celsius is 1 deg from water boiling. It's absolutely too high. On the ark.intel.com
there is a paramemter Tjunction = 94-99°C for latest CPUs. "Junction Temperature is the maximum temperature allowed at the processor die." But on previous CPU line, which is discontinued, there was Tcase parameter which was much much lower. I'd say that for long term work you should have temperatures not higher that 80°C.
Please, check the ventilation of your chassis, if there are not air bubbles in thermal interface between h110i water block and your CPU lid, if water block is mounted properly and reliably, as well it can simply occur that this CPU is too much to be overclocked for this cooler. As well there can be the reason not that much in the cooler, which has too weak cooling capability for this monster, but the reason can be Intel, which beginning from Ivy Bridge CPU architecture puts not solder, but regular thermal grease snot under the lid of it's consumer grade CPUs. Only server grade CPUs from Intel have solder between lid and silicon, unlike AMD's CPUs which all still have solder under the hood for better thermoconductivity. Indeed, you can be infuriated by these issues with thermoconductivity of the interface under the lid in consumer Intel CPUs, especially regarding the money for such CPU, but it is the fact widely known in computer world especially among overclockers. That's why they often do delid of the CPU and loose warranty instantly. So they put water block directly on die of the CPU (replacing old thermal grease by new one, of course). And sometimes CPU occurs dead after delid procedure.
2x Xeon E5-2698 V4 ES, ASUS Z10PE-D8 WS, 128GB RAM, Geforce GTX960 4GB, Dell U2711.