Yes thats right im 47 and just over clocked my i7 8700k to 5.1 ghz for the first time ever, and ran it for 6 hours stable.  temp reached 83c  while running folding.  i didnt noticed it was still over clocked, untill i looked at the LCD on my evga Z390 motherboard and seen 83, im like what the crap, so i opened up intels sfotware for over clocking and seen it was still at 5.1ghz..  how many other have done that over clocked and forgot.  and what was your over clock speed and what was your set up
 
so is it a overclock with a i7 8700k at 5.1ghz  on distilled water with nothing added to it and hitting 83c any good  ?

83C isn't bad..The TjMax temp is 100C, that's when the cores start throttling down frequency/voltage to keep their temps in check providing that Thermal Control hasn't been disabled (enabled is default) in the BIOS.
 
You might get the temp down by lowering the Vcore, or changing the Load-Line Calibration (LLC) so that the Vcore doesn't increase so much under load..What is the Vcore under load/stress, that's what's most important?..Mine needs 1.390/1.392 for 5.2GHz and cores temps are less than 70C, but it's delidded and with Thermal Grizzly Conductonaut (liquid metal TIM).
 
You can use (I do) Intel Burn Test or the Intel Processor Diagnostic Tool for quick load/stress testing.
 
 

Oh first time overclocker! Overclocking is very fun once you get into it :)
If you are running those settings stable so far for several hours then I wouldn't expect any further issue from it but
of course keep an eye out and adjust if you need to.
Have fun!

Basically, Load-Line Calibration, aka Vdroop, or CPU Vdroop as it's called in your BIOS -> OC section as seen here keeps the CPU core voltage lower, or lowers it, under load so that the core voltage doesn't spike over Intel specs when it transitions from load to no load..Exactly what you don't really want when overclocking.

You want to have a low Vcore (as possible) and use LLC to keep it the same or increase it under load..This is best.

I think that on your board, a 75% Vdroop is default when it's on Auto..You need to see how your board reacts to a lower or higher Vdroop % or number..My board uses Levels 1 - 7 and the higher the Level the more Vcore is applied under load..Your board might be opposite and the lower the Vdroop % the higher the Vcore will be under load, I'm not sure but I think so, you'll have to find out.

Vcore under load is what's most important.

Now, what you can do to kind of rough it in is to use the latest EVGA E-LEET software and set the Vcore to Override and apply a fixed Vcore to find out how much voltage your CPU needs to maintain a given frequency..After that, go into the BIOS and apply it..That way, using the sofware, you don't have to keep going into the BIOS time and time again and changing it all the time..The software will make dynamic changes by default, meaning temporary, until the next boot/start/restart, but there is an option to make them apply at startup..Making changes in the BIOS are static changes and will always remain.
 
In your mobo manual, in the Using the E-LEET X Software Suite section, it says:
 
Generally speaking, Adaptive will allow you to tailor your CPU Vcore voltage profile to keep voltage usage and heat to a minimum, while Override is more of a brute-force method of setting your CPU Vcore voltage.
 
Adaptive gives you both Target Voltage and Offset Voltage as an option.  When adjusting Adaptive, you start by setting your target voltage, which you will discover through stress-testing your CPU.  The Offset voltage is then used to fine-tune additional voltage that may be required in load or stress situations.
 
Override just provides a static voltage; outside of extreme benching, this setting is typically not needed or ideal for the longevity of the CPU, since the VCore is meant to fluctuate based on load.  Alternatively, this can be used in the early stages of overclocking to find your Target voltage, before switching back to Adaptive.
 
You can make/save different overclocking profiles in E-LEET and you can change profiles 'on-the-fly' without having to go into the BIOS and do it as also stated below..But you can also make/save overclocking profiles in the BIOS.

The Options tab is for managing your ELEET profiles.  You can save overclock profiles made in the previous section, as well as selecting an option to load a profile at boot.  Use care, however, when setting a profile to load on startup; if the overclock is unstable, it may prevent your system from booting to the OS.
 
Before you do anything though, you should make sure to update to the latest BIOS if needed found in the EVGA Download Center..There have been BIOS updates for improved overclockin/compatibilty/security reasons.
 
So, with all that said, it might be a good idea to clear CMOS, which returns the BIOS to all default settings, and begin again.

based off the information given and the information i have at hand.  the information i have came from Silicon Lottery.com`s web site  https://siliconlottery.com/pages/statistics..
but with the new information from Bob, ill have to make changes to adjust .. 
and the software i am using to get my over clock is one from intel 
https://downloadcenter.intel.com/download/24075/Intel-Extreme-Tuning-Utility-Intel-XTU .. 
and now with the NEW information, ya i got some work to do..
when i get time and the wife and youngest child is gone and i can focus more on over clocking.. 

Welcome to the club :)

thank you and blesings ..
 
I dont do much over clocking, due to i dont have a extra rig to it full time on .  but its nice to kick around a over clock on the main rig once in a awhile .. 
Im not like Kingpin, who i think does it 24/7 and is known for kicking out some nice clocks ..
Me im just a loner from indiana ..

aw sweet, do i get gifts too ...  

Temps seem high for the cooling solution you have..Run IntelBurnTest quick like and see what the CPU Core Voltage in CPU-Z gets up to under load, that's what matters most.

it failed ..... so had to drop back down to 4.9ghz.  volts was in the 1.68 on gpu-z .  when i drop the voltage down to that it kept crashing .. temps was in the mid 80s. last i seen ...   I know for sure i need a 360mm rad, this 240mm is just not cutting the grade  i think .. or i need another 240mm rad to help keep the water cooler .. but with the case i have, putting another rad in the top is a no go .  so a bigger rad is what i need.   sucks, this case is like that, damn good case .. 

It's also down to silicon lottery .
I actually set the voltage to 1.435 and 5.6 plus 4.7 cache which gave the fastest speed.
I can't get it to 5.7 no matter how hard I try .

spit051261
It's also down to silicon lottery .
I actually set the voltage to 1.435 and 5.6 plus 4.7 cache which gave the fastest speed.
I can't get it to 5.7 no matter how hard I try .

That's an impressive nb frequency, mines at 2520

The only way to raise mine higher is to start raising the bclk in the bios, I wonder if that's a difference in hedt cpu's. I don't know if using memory in dual or quad channel even makes a difference. Never really tried or noticed.