My i7 5820k overclocking results

[Teafac3]

So I just picked up an i7 5820k coupled days ago and decided to overclock it last night. I was able to boot into windows at 4.6ghz 1.3volts but at 14 minutes of running realbench it failed so i decided to lower to 4.5ghz. At 1.25volts and 4.5ghz i was able to run realbench for 4 hours no problems gonna link a screenshot of my results and temperatures. My questions are
1. Are my temps good based on the cooling and voltages i am using compared to others?
2. I havent touched the uncore ratio or my ram speed. Which should I overclock first and how do I go about it?
3. Is 4 hours of realbench enough to determine stability, should I go for the 8 hours? I was thinking of also running aida64 overnight tonight too. Are these programs sufficient or do you guys recommend others?
4. Now that I have established what seems like a stable overclock should I change the voltage to adaptive? And if so what should the offset mode sign be, plus or minus, and what should the cpu core voltage offset be set too?

Here is a description of my build and a pic of my temps in hwinfo64 look at maximum for numbers reached suring the test as screenshot was taken slightly after the test stopping.



CPU: Intel Core i7-5820K 3.3GHz 6-Core Processor
CPU Cooler: Noctua NH-D15 82.5 CFM CPU Cooler
Motherboard: Asus SABERTOOTH X99 ATX LGA2011-3 Motherboard
Memory: Corsair Vengeance LPX 16GB (4 x 4GB) DDR4-2666 Memory
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive
Video Card: Gigabyte GeForce GTX 980 Ti 6GB Video Card
Case: Fractal Design Define S w/Window ATX Mid Tower Case
Power Supply: EVGA 750W 80+ Gold Certified Fully-Modular ATX Power Supply
Operating System: Microsoft Windows 10 Pro OEM (64-bit)

 

[10tacle]

Looks like you got a good chip compared to some websites out there who tried overclocking a 5820K. Always remember everyone gets a different chip. Some get better overclockers than others, some get worse than others (better meaning lower voltage needed at the same overclock speed, higher voltage at the same speed for a worse chip).

This site was only able to get 4.4GHz stable and took 1.3v to get there on an H105 water cooler: http://www.overclock3d.net/gfx/articles/2014/10/23121733861l.jpg

This site (KitGuru) got a little better chip than the above website with 4.5GHz at 1.27v. on an H100i water cooler:
http://valid.canardpc.com/wxaq5u
http://www.kitguru.net/components/cpu/luke-hill/intel-core-i7-5820k-haswell-e-6-core-cpu-review/2/

I never mess with memory overclocking as it generally increases instablility in the CPU/BCLK overclocking. What I will do however is play around with the mutliplier and BCLK settings. For example, i might try my i5 4690K at a 45x multiplier and a 102MHz BLCK for an effective 4.6GHz instead of a 46x/100MHz setting and see which is more stable at the same voltage.

And regarding time on stress test, you really need to run it at a minimum of 8hrs, preferably overnight. Also keep in mind that in the summer when indoor ambient temps go up, you may have to make speed adjustments accordingly to keep temps in check. I would not push it anymore than you have now. Once you get to a certain decent overclock, each 1GHz uptick takes a lot more voltage exponentially and heat is the limiting factor.

 

[Teafac3]

Looks like you got a good chip compared to some websites out there who tried overclocking a 5820K. Always remember everyone gets a different chip. Some get better overclockers than others, some get worse than others (better meaning lower voltage needed at the same overclock speed, higher voltage at the same speed for a worse chip).

This site was only able to get 4.4GHz stable and took 1.3v to get there on an H105 water cooler: http://www.overclock3d.net/gfx/articles/2014/10/23121733861l.jpg

This site (KitGuru) got a little better chip than the above website with 4.5GHz at 1.27v. on an H100i water cooler:
http://valid.canardpc.com/wxaq5u
http://www.kitguru.net/components/cpu/luke-hill/intel-core-i7-5820k-haswell-e-6-core-cpu-review/2/

I never mess with memory overclocking as it generally increases instablility in the CPU/BCLK overclocking. What I will do however is play around with the mutliplier and BCLK settings. For example, i might try my i5 4690K at a 45x multiplier and a 102MHz BLCK for an effective 4.6GHz instead of a 46x/100MHz setting and see which is more stable at the same voltage.

And regarding time on stress test, you really need to run it at a minimum of 8hrs, preferably overnight. Also keep in mind that in the summer when indoor ambient temps go up, you may have to make speed adjustments accordingly to keep temps in check. I would not push it anymore than you have now. Once you get to a certain decent overclock, each 1GHz uptick takes a lot more voltage exponentially and heat is the limiting factor.

Wow Good to know that I may have gotten a decent chip. Do you know if I should change the voltage in bios from manual mode to adaptive, or offset mode? I heard after stress testing to setting it to adaptive keeps you from always running at the set voltage and it helps with the life of the chip. Should i set it to adaptive? and if so my mobo in adaptive mode asks for an offset mode sign and voltage offset how do i configure those?

 

[10tacle]

Do you know if I should change the voltage in bios from manual mode to adaptive, or offset mode? I heard after stress testing to setting it to adaptive keeps you from always running at the set voltage and it helps with the life of the chip...and if so my mobo in adaptive mode asks for an offset mode sign and voltage offset how do i configure those?

Sorry I guess I missed that question previously. I used to keep my overclocked 2500K/P67 chipset at adaptive with a +, but with my newer 4690K/Z97 chipset, I have custom boot settings (stock, overclock) depending on need, so I don't play around with that much anymore. The + just adds voltage and the - subtracts it under load depending on need. You can manually enter this +/- voltage setting if you want to fine tune the voltage. Use + for an overclock setting and - for underclock setting.

But I would recommend using adaptive for a new overclocker...EXCEPT when you run a stress test. Adaptive sometimes overvolts the CPU in stress test programs, so don't use adaptive for stress testing...keep it manual for stress testing at your best Vcore setting. Adaptive is fine for regular load using though (gaming, video editing, etc.). And leave the core voltage offset right below it on auto when you are running adaptive unless you get really serious about fine tuning your overclock to voltage use.

Hope this helps!