Overclock or no?

[rezo]

I had my i5 4690k overclocked to 4.5 GHz at 1.25 volts and it was fine. One day I decided to try 4.6GHz and by using the auto overclocking feature of my ROG Maximus VII Hero motherboard it did it and works! Only problem is that its at 1.35v which means temps reach 91 degrees at heavy loads from synthetic benchmarks (Only after 5-10 minutes)

So should I keep the 4.6 GHz overclock which has dramatically increased performance, or do I wait to replace my Hyper 212 EVO with a Watercooling solution which Im planning to do over the Easter Holidays. I have all the bits for it I just need to test it on another PC to see if they still work.


XTU went from 651 marks to 900 marks after overclocking from stock to 4.6 GHz.
Cinebench went from 509cb to 635cb
Firestrike (CPU only) went from 7544 to 8892

Although temps went from 56.5 degrees at 100% load all the way to 91 degrees.

Full specs on profile if needed :)

[Der Hexer]

i doubt that overclocking from 4.5 GHz to 4.6 GHz

引用自 ReZo：

...
dramatically increased performance
...

it's not worth it to raise the voltage from 1.25V to 1.35V for +100MHz.
stick with 4.5 GHz @ 1.25V - less cooling, less noise, less power consumption

[MancSoulja]

Just because your mobo set your volts so high, what's stopping you setting them back to 1.25v? The worst that will happen is your PC wont boot until you drop the clockspeed or you'll get a BSOD.

[Big Boom Boom]

Do not use auto overclocking features, it will set very high voltage to ensure stability. Just manually increasing your voltage and run Prime95 to check stability. You may end up 4.6Ghz stable at like 1.3V or something.

[rezo]

Power consumption isn't a problem for me nor is loudness of the fans. I just don't want my cpu overheating. I'll try 1.3V or 1.25 when I get home (currently out for Mother's Day)

[[☥] - CJ -]

Okay..
Those temps are for benchmarks that NATURALLY are going to have an effect on temps

But what are the temps while Gaming?

And yeah, higher voltage means higher temps, but thats quite a hike.

[rezo]

Played an hour or two of CSGO and 10-20 min of Crysis 3 at ultra settings and temps are 75-82 degrees. So I think I'll have a go at lowering voltage to a safer number like 1.3 and see if I can possibly push it to 4.7 GHz but I doubt it.

[Revelene]

Overclock manually with the BIOS, don't use anything automatic. Don't use software for overclocking the CPU, either.

[rezo]

Oh crap I just glimpsed at Coretemp and the voltage shot up to nearly 1.4v at some points which isnt good. I just remembered I have the voltage set to adaptive or automatic... Going to change it to 1.25 and see what happens

[Sandman]

You need to adjust the voltage offset, not set the vcore to manual. With the voltage offset your chip will lower the voltage when it's not needed and raise it up to the limit you specify. 81 degrees under load is fine. Intel goes to 100c before throttling and 130c before shutdown.

You need a better cooling solution though. You're using a $30 cooler and trying to get max performance out of your chip.

[rezo]

I found a software called YCrusher (You've probably heard of it) and tried doing 1 Billion digits of Pi, After a couple seconds the temp went to 98 degrees and turned it off before any damage could be done.

In a week I should be making a custom watercooling loop in my PC so that should hopefully help.

[Der Hexer]

still don't get it:
why all this effort when your CPU is running stable and cool @4.5GHz and 1.25V?
4.6GHz is just 2% higher clockspeed and you won't notice the difference in games - it's measurable if at all.

[Big Boom Boom]

引用自 Der Hexer：

still don't get it:
why all this effort when your CPU is running stable and cool @4.5GHz and 1.25V?
4.6GHz is just 2% higher clockspeed and you won't notice the difference in games - it's measurable if at all.

Why not? Some people overclocking to play games. Some people playing games to overclock. Different goals.

[Der Hexer]

引用自 Big Boom Boom：

引用自 Der Hexer：

still don't get it:
why all this effort when your CPU is running stable and cool @4.5GHz and 1.25V?
4.6GHz is just 2% higher clockspeed and you won't notice the difference in games - it's measurable if at all.

Why not? Some people overclocking to play games. Some people playing games to overclock. Different goals.

base clock for i5-4690k is 3.5GHz
4.5GHz is already +1000MHz or 28% overclock

there's always a "sweet spot" when overclocking (unless you're aiming for overclocking or benchmark records) and raising the clock further will diminishing the results.

[rezo]

I overclock for fun. I know there isnt a difference for gaming between 4.5GHz and 4.6GHz but its all for fun and Im trying to get the most out of my CPU. The XTU Benchmark went from 782 to 900 by increasing the speed by 0.1 (4.5 to 4.6) and Ive managed to get it to 4.7GHz but it then crashed after 2 min in a stability test.

[MancSoulja]

引用自 ReZo：

I overclock for fun. I know there isnt a difference for gaming between 4.5GHz and 4.6GHz but its all for fun and Im trying to get the most out of my CPU. The XTU Benchmark went from 782 to 900 by increasing the speed by 0.1 (4.5 to 4.6) and Ive managed to get it to 4.7GHz but it then crashed after 2 min in a stability test.

That means the voltage is too low.