8086k 24/7 overclock

[bgould]

I'm new to pc building (this is my first build) and need some suggestions for overclocking. My system specs include: evga g3 1000w psu, asus maximus x hero mobo, intel core i7-8086k cpu, dark rock 4 air cooler with 135mm fan (MX4 thermal compound), 16gb corsair lpx 3000 MHz ddr4, samsung 860 evo 500gb ssd, wd black 1tb hdd, evga gtx 1070 sc black edition GPU, 3 corsair sp120 intake fans, 1 corsair sp120 exhaust, and one corsair ml120 pro exhaust mounted on top. The build is in a corsair obsidian 500d. This pc will be used to train neural nets using tensorflow; I will upgrade the GPU to a Titan V in a year or so. I followed der8auer's 8700k overclock guide on youtube and obtained a 5GHz overclock on all cores with a vcore of 1.32 and a cinebench muilticore score of 1615 peaking at 75c. I ran prime95 but the temps shot up past 80c running 6 threads and cancelled the test. I'm afraid that, while the dark rock 4 is quite a beefy cooler, I don't have the cooling capability to run a 5GHz overclock 24/7 and under full load when running tensorflow. I currently have a 4.8GHz overclock on all cores with an AVX of -3 and vcore of 1.27 that runs cinebench at 68c and a multithread score of 1550. Adaptive voltage is on as I am using the Windows 10 balanced power mode. At the current overclock it idles at 31-34c with the cpu fan at 50%.

 

Is there a way to safely run a 5GHz overclock at a vcore of less than 1.33 without delidding or changing my cooler. Are these values normal for the 8086k? What bios setting do you recommend? How low of a vcore would you expect for 4.8 GHz on an 8086k?

[Jurrunio]

8086k is just 8700k with the garbage overclockers filtered out, so these numbers seem about right to me.

[NelizMastr]

I'd personally just leave it at 4.8. A 1070 isn't that hard to keep up with when using current gen CPUs.

[Velcade]

How are temps during normal use?  The 5.0 OC seems stable and fine.

[wildgg]

if you bought a 8086k then why would you wanna run it at 4.8ghz? seems a bit pointless to me.

 

i would get either a better cooler or delid.

[BarackOBatman]

Personally, i think you're fine.

 

I recommend getting MSI afterburner and using the on screen display to monitor your thermals in games. (There are many guides on youtube that explain this)

Synthetic loads such as CB or Prime 95 will run your CPU much harder and hotter than what you'll actually experience while gaming.

For example, my 8700k at stock gets to 80-85c during cinebench on a 240mm AIO, but when playing Farcry 5, it doesnt go past 50c.

I assume gaming is what you intend to do with your PC. Even at 80c, I wouldn't be too worried if it were 24/7.

Besides, a dark rock 4 is about as good as it gets in terms of cooling performance, the next step up in my opinion is a custom water loop. A 280 or 360 AIO would be more of a "side grade" than anything in my opinion.

[Coaxialgamer]

I've seen 8086k's do 5.3ghz+ with reasonable voltages . with that said , why are you running at only 4.8?

 

The general rule of thumb i like to give is that if you're running on air or an AIO  , you'll run into thermal limits before you reach dangerous voltages .

Anything under 1.4-1.45V should be perfectly fine as long as you keep the chip cooled.

[DarkSmith2]

you could move to a colder country and let the window open all the time.

[O9B0666]

Should of saved money and got a 8700k then lol or you can get a good aio for cooling. 

[jones177]

I did a post this morning on that.

 

I did some tests with the i7 8086k on a ASUS Rog Maximus x Hero.

It seems if you sync all cores it sets it to the boost clock. 

 

Stock

ASUS Rog Maximus x Hero sync all cors

Der8auer 5ghz overclock

 

 

The Sync all cores max temp is a bit high because I ran the CPU-Z bench.

[StarfleetCap]

On 2018. 7. 23. at 6:32 AM, Jurrunio said:

8086k is just 8700k with the garbage overclockers filtered out, so these numbers seem about right to me.

What even is the 8086k?