04-19-2018 03:27 PM
04-21-2018 07:01 AM
04-21-2018 01:03 PM
04-21-2018 02:25 PM
Thanks for the answer. I remember that Raja wrote, that LLC up to 5 level corresponds to the Intel specification. And overshoot can't be seen without an oscillograph. Here it is written that it is very bad - https://en.wikichip.org/wiki/load-line_calibration#Overshoot
As for the voltage, two of mine 3930k C2 degraded. One because of high VTT/VSA and vcore, and the last one only because of vcore 1.4V (constant voltage and frequency). The computer works 24/7/365. These CPUs were used 95% of time for office tasks. Therefore, I decided for myself, that 32 nm CPU should not receive more than 1.35 V, and 14 only 1.25. But about 14 nm I'm not sure. It is possible, that the number should be only 1.2V. I read that degradation does not occur from increased voltage, but from the currents. In that case, it's hard for me to understand, why my processors were degraded.
But I realized one thing, the temperature has little to do with degradation. All my CPUs were cooled by water. Yes, I used LinX and P95 to test my OC, but the total time was extremely short, considering how many this PC worked in 24/7 mode. Explicit consequences of degradation were noticeable after almost six months, but the system has lost stability much earlier, I just did not notice it. After the frequency and voltage were lowered, it did not happen again, but the processor, of course, could no longer operate at such frequencies and with such voltage.
I would also like to add, that AIDA64 and HWInfo64 show the same voltages (screenshot). But AIDA is more convenient, esp. for me (I have dark color scheme in Windows and HWInfo64 does not display everything correctly).
04-22-2018 07:30 AM
I have my vcore at 1.24v and LLC 6. If I am getting an overshoot in voltage for a short period then I can't see it spiking any higher than a maximum of 1.3 and only for a brief period. I guess I would be more concerned if I was pushing 1.35v+
I think these motherboards market "easy" ways to overclock and, with things like multicore enhancement enabled by default where voltages are pushed in the 1.3v. A lot of people will be buying these and leaving the settings at defaults so I wonder how their CPU will hold up in the future?
VCCIO is 1.000v and VCCSA is 1.100v. On auto these were much higher, 1.36v on VCCSA. Only required for RAM above 3600Mhz on this chip and, anything above 3200Mhz
is not noticeable in day to day apps only in benchmarks really.
04-22-2018 07:56 AM
04-22-2018 10:57 AM
I am even fine with 4.5ghz but there is not downgrading of cpu clock when not in use.
As for 4.5ghz i believe i needs to push to 1.27v
let me know what is the best setting to set at 4.4-4.7 ghz . i want to under clock when no load. There is no point to clocking alway 4.3ghz as its summer and ambient is reaching 38-41 degree celcius .
Is there any table which tell what freq what voltage is min and max . it would be easy to set and see.
I believe 1.250 is higher for 4.3ghz.