Overclocking an i7-5820k to 4.4 GHz at 1.17 Voltage

MisterNguyen · Dec 17, 2016

Hi,

I finally decided to overclock my CPU. I tried 4.4 and 4.5, but the temperature would reach 80 C +. Now I'm sitting at 4.4 GHz and 1.17 Voltage.

After 10 minutes of stability test on AIDA64, my overall CPU temp is at 71c, CPU Core #1 at 79c. CPU Core #2 at 78c, CPU Core #3 at 81c, CPU Core #4 at 78c. So far have I found my ideal OC?

I also tested Battlefield 1 at 1440p on Ultra graphics (currently running a Strix 1080), and my CPU temperature during gaming reached 81c after roughly 5 minutes, but it would fluctuate and drop to the 70's. Is that normal? Should I down-clock a bit more?

I also don't use water-cooling; I have a SilenX EFZ-120H air cooler. https://www.amazon.com/Silenx-Effizio-120mm-Intel-Heatsink/dp/B007VQO7GE

BeauSmith · Dec 17, 2016

Try 4.35ghz, just for the fun of it. On the newer CPUs, you run into voltage before temps normally.

MisterNguyen · Dec 17, 2016

BeauSmith :

I made a mistake. I'm actually at 4.4 GHz and 1.17 Voltage.

BeauSmith · Dec 17, 2016

Up the clock speed a bit.
Push it until it quits then downclock it until it is under 80c or right at 80c during an hour of full load. Also try to dust out your case and maybe pick up some more case fans

MisterNguyen · Dec 17, 2016

BeauSmith :

Okay! Cool! But are my current temps as well as the temp while gaming normal?

BeauSmith · Dec 17, 2016

Don't game when stress testing, try using heaven benchmark for equal results.

BeauSmith · Dec 17, 2016

Prime 95**** Benchmark Heaven is used for GPU performance. I forgot to think about it!

MisterNguyen · Dec 17, 2016

BeauSmith :

I used Unigine at 4.5, but it crashed lol. At 4.4, it finished completely, so that was good. The result was very minute vs base clock. I also didn't stress test while I played Battlefield 1, and the temp did reach 81c at one point. So that worried me a bit

.

MisterNguyen · Dec 17, 2016

I played Watch Dogs 2 at Ultra on 1440p for about 10 minutes and the PC crashed lol. I think I'll go back to the standard clock now.

BeauSmith · Dec 17, 2016

Sounds like a good idea. You may need a better cpu cooler. My PC is as follows;

https://pcpartpicker.com/list/cnrn9W

Multipack · Dec 17, 2016

Stress test an OC for at least a few hours, and using games is a perfectly legit way to stress it too. Also, Prime95 can be misleading and even damaging because of AVX. Check section 12.. http://www.tomshardware.co.uk/forum/id-1800828/intel-temperature-guide.html

Anything above 80c is not healthy, and you want to use that as your ceiling, but your voltages are surprisingly low for a 4.4Ghz clock so try upping voltgae without changing the clock if you encounter instability, as you may experience vdroop problems otherwise.

1LiquidPC · Dec 18, 2016

I'd look at better cooling as well. I was testing my 5820k @ 4.4Ghz using a Noctua NH-U14S and I'd hit high 80s/low 90s, which is way to hot. However, mine was going under water regardless after testing. Your voltage is very low for that speed, though on average I've seen better OC results and lower voltage required with newer stepping versions of the 5820k CPU vs older versions. I need 1.325v for mine. Been running since X99 launch back in 2014.

For stress testing, Prime95 26.6 is the newest version to use due the AVX and damage risk from VRM current draw. I use ASUS Realbench, Memtest, 3DMark, Unigine tests, Sisoft Sandra tests, several stressful games(Crysis 3, DA3, Battlefield, ect. ), along with general web browsing and PC usage to do final checks on OC.

MisterNguyen · Dec 18, 2016

1LiquidPC :

I decided to OC my 5820k to 4.2 GHz at 1.15 voltage and keep it at that until I can invest in a water cooling unit or a better cooler. So far, everything seems fine. I played both Battlefield 1 and Watch_Dogs 2 and have yet to experience any crashes. But I'll definitely keep in mind what you and everyone have said; thank you! You all have been extremely helpful!

Edit: My next big step is to OC my Strix 1080. I've read a specific guide on this, but it didn't mention anything bout increasing voltage or fan speed. I know tuning up the voltage carries a risk of damaging my video card. Should I just OC without increasing either of those two? I'm a total newbie to overclocking lol. And I also don't have a water-cooling unit for my GPU. What's a safe temperature for a GPU while gaming?

BeauSmith · Jan 9, 2017

80c is the max I would consider safe. Up the fan speed with an aggressive fan curve, it hurts nothing.

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