[SOLVED] Overclocking Intel I7-8700k with Asus ROG Maximus X Code motherboard ?

[Mariox]

Hi! Recently bought a new computer on 2nd hand marked.

Specs:
Cabinet: Be Quiet! Dark Base Pro 900 (Orange)
Mobo: ASUS MAXIMUS X CODE
CPU: Intel Core i7-8700K
GPU: ASUS GeForce GTX 1080Ti ROG Strix Gaming
RAM: 16GB HyperX Fury DDR4 2666MHz
Liquid cooling: NZXT Kraken X42 with Be Quiet!
Fans: 2x SilentWings 3 PWM 140mm fan, one in "push-pull" and one at the back
PSU: Corsair RM750x 750W 80 PLUS Gold
Storage: 256GB Kingston KC600 SSD

Seller bought it new in 2018 and told me he had never overclocked his CPU. He also told me he had reapplied liquid metallic thermal paste a few years back. Yesterday i decided to overclock my cpu and managed to hit 4.9ghz at 1.3 voltage, however with clinebench r20 test the temp was pushing as high as 86 degrees on some cores. Im pretty new to overclocking and wouldn't want to break my CPU. Is 86 degrees max on clinebench r20 okay? Should i reapply the radiator somewhere else? (did not check were it was seated, currently at work). Any help would be much appriciated
Best regards, OP

 

[Eximo]

Well, probably lying about overclocking if they went to the effort of applying liquid metal. Can't conceive of a scenario where that level of modification would be desirable and not overclocking. I should add applying liquid metal means removing the metal cover of the CPU and applying it directly to the silicon and metal cover. Then using normal thermal compound between the heatsink and chip.

Liquid Metal is not thermal paste/compound. It is literally what it says, a metal that melts at slightly above room temperature (gallium based usually). If you are not familiar with it, best to leave it alone. Or assume that was also a lie, and a metal bearing thermal compound was used in the normal fashion.

Wasn't quite able to decipher your fan layout from your description.

86C on an overclocked chip isn't terrible, but it could be better. Keep in mind that was during a benchmark and not an everyday use case, so it should be lower during games or application use that doesn't use up all the cores.

 

[geofelt]

I think you are reasonable and would do nothing more, just enjoy your new purchase.
Likely, you did very well snagging a GTX1080ti.

How well you can do is a matter of getting a good bin.

Core i7-8700K overclockability silicon lottery stats

Silicon Lottery has published new statistics regarding the overclockability of Intel's hexa-core Core i7-8700K desktop processor.

fuse.wikichip.org

86c. is a good temperature for a stress test.
The processor will monitor it's own temperature and will throttle or shut down to protect itself if it detects a dangerous temperature.
That is about 100c.
I would be happier to keep things under 1.4v.
And, I do not know what one should do with liquid metal if you should ever need to change a cooler.
AIO coolers eventually accumulate air and need to be replaced.