Broadwell E Overclocking.

[Qyoon]

Hi

 

It's seems braodwell E chips need a ton of voltage to gain performance... like above 1.3V...

 

What is your average Core Voltage to reach something like 4.4 - 4.5Ghz ?

 

Not sure if the higher temps and noise worth the extra performance, what do you think ?

[Davidwr80]

I think you have to decide that for yourself. For me, the extra heat and voltage needed is worth it

[cynexit]

My 6900k needs 1.29V to get to 4.4 and about 1.25V for 4.3 so I stick with 4.3 personally. Anything more than 4.4 is not achievable for me sadly

Since I have a custom loop I don't have to care much about temps and noise tough....

[Qyoon]

I may have been unlucky with my chip.

 

At 1.26-1.27V i can get 4,2Ghz but basicly , even at 1.35V i can't achieve a stable 4,4Ghz...

[DrMikeNZ]

As I run a lot of AVX2 applications, I cannot safely go above 4.0 GHz on my i7 6900K. The CPU already draws around 200W when running my heavy tasks.

The highest I have been able to push my i7 6900K 'safely' outside of my normal workload was 4.3 GHz. It also was not stable at 4.4 GHz for any extended period (cannot recall how high I tried voltage), although I was able to get brief periods which would sometimes pass benchmarks.

If you are concerned about power efficiency, I ran my i7 6900K at 3.5GHz for a while, performance difference in most real world tasks was minimal. There was a very large jump in power requirement from 3.5 to 3.6 for my chip, and at 3.5 GHz it was more than twice as power efficient than at 4.0 GHz (Drew less power than my Ryzen 1700).

[Qyoon]

I turned my cpu down to 4Ghz , with the fan as low as possible to have a constant very low noise and good temps.

 

On 100% load with the cpu fan at 800 rpm it's running at 60°C.

 

Still good performance imo , will see when i try some gaming, getting a 1080FTW tomorrow.