"Safe" voltage limit on big haswell(5820k)

[Schmuckley]

show what your cooling can do

the heat output of hw-e has helped convince my mate he needed to upgrade his loop too. i will spam the forums somewhere once it is finished and i have had a few hours to swear at the bios :lol:

HW-E can overpower most cooling solutions.F1 included
If everything's not all clogged up I can probably run 4.6-7-ish

That is the best so far that i got

4.5 at 1.298v.

Maybe that will do for me i guess

You have temperature headroom;I'd add more voltage if I was you.
If you just want to see what it will do,go all the way up to 1.41v
4.5 is not bad for 24/7 running on those chips.

 

[Kevo05s]

Hey, sorry to be so late in the thread, but I need some advices... I got myself that big haswell chip last summer with custom liquid cooling, and recently I started overclocking it... I did overclock before but this time something weird happened
its been 3 days now that my chip has been running at 4.5GHz 1.29V stable, even after a +3h straight AIDA64 stress test ( I know 3hs isnt long but it was for me ) but today after multiple benchmarks (done over the 4 last days) I started another stress test to see what was happening (power consumption and what not) and within 3 minutes I had a crash (while pressing the stop stress test button), "insufficient voltage on the CPU" that was the definition of the error the blue screen gave me. how come the error only appeared after all those times even with previous successful stress tests and successful benchmarking?
(temps isn't an issue, in after three hours of AIDA64 my max core temp reached was 72C, I stay under the 55C in game)

To be noted: first successful stress test was at home, the failure is at college, I brought my PC here for a presentation Im doing, maybe the older power cables in there doesnt deliver clean power, but then again my powersupply is an EVGA 1000W Gold rated, it should clean it up a bit)

 

[EarthDog]

I would have started your own thread on this as it has nothing to do with this thread, but to give you a quick answer.........

Does your computer work for your needs? If so, I wouldn't worry about it failing a stress test.

 

[Schmuckley]

1.4v
temps allowing..next!

 

[cdawall]

I am kinda glad this got dug up I have been keeping under 1.35v for safety on mine.

 

[EarthDog]

1.4v
temps allowing..next!

So oblivious at times, you...

 

[monim1]

There are many opinion about safe voltage limit. I think that it's better for you to consult with a expert about voltage function.

 

[cdawall]

There are many opinion about safe voltage limit. I think that it's better for you to consult with a expert about voltage function.

An expert as in whom?

 

[EarthDog]

We have already chimed in......

 

[trog100]

An expert as in whom?

i kind of get the impression that a real safe limit is higher than folks think.. ether that or heat simply stops things.. basically the fact nobody seems to have discovered it suggests that nobody has actually reached it.. he he

trog

 

[cdawall]

i kind of get the impression that a real safe limit is higher than folks think.. ether that or heat simply stops things.. basically the fact nobody seems to have discovered it suggests that nobody has actually reached it.. he he

trog

The max safe limit is when degradation starts to out weigh performance gains. Me personally I rate that differently for each person. I ran my phenom ii's at 1.6-1.65v because I didn't give a fuck and would just get another.

 

[trog100]

a good point but not giving a f-ck aint quite the same as operating within a "safe" limit..

mind you it probably is the only way of finding out.. f-ck one up and see..

trog

 

[cdawall]

a good point but not giving a f-ck aint quite the same as operating within a "safe" limit..

mind you it probably is the only way of finding out.. f-ck one up and see..

trog

Phenom II's lasted about 6 months with 1.65v before they start to degrade heavily. I am sure these chips will last quite a while on 1.4v, 1.45-1.5v? probably not.

 

[EarthDog]

Phenom........haswell.........

Apples.............basketballs.


Keep it under 1.4-1.45V daily and temps in order.

Why are we hashing this out on this old thread again? Oh that's right, someone hijacked the old thread!!! We arent even talking about the thread title!

 

[biffzinker]

 

[cdawall]

Phenom........haswell.........

Apples.............basketballs.


Keep it under 1.4-1.45V daily and temps in order.

Why are we hashing this out on this old thread again? Oh that's right, someone hijacked the old thread!!! We arent even talking about the thread title!

To much voltage is to much voltage it all applies that same. Pump to much and the bitch will degrade.

 

[Schmuckley]

They degrade anyway

 

[trog100]

of course they do but it all comes down to how quickly..

trog

 

[TheHunter]

My small Haswell 4770k @ 4.7GHz ~1.285v still hasnt show any degredation yet, its now almost 3yrs old.


I could go for 4.8 or 4.9ghz ~ 1.38v, but the heat is killing it for me..

Imo really safe 24/7 voltage in general is up to 1.35v be it small or big haswell

 

[cdawall]

They degrade anyway

Eventually. I just snagged a good waterblock so now the game is on for my big haswell.

 

[vega22]

my mates ended up looking like that. not sure the figures for the temps, but i know it aint high any more :rofl:

 

[RejZoR]

For water cooling 1.4V is fine. For anything else, 1.35V should do the trick just fine.

My 5820K feels quite comfy at 4.5GHz using around 1.25-1.275V. Rock stable at anything, have been using this since I bought the platform last year. Have tried higher clocks on just 2 cores for turbo, but it failed. I'd have to increase voltage a bit I think.

 

[leonman44]

Guys , my chip cant do more than 4.5ghz even at 1.4V where it becomes more unstable! My settings now are 1.3V core volt 4.5ghz , 1.22v cache at 4ghz , input voltage 1.95V (increasement wont help) amd LLC level 7 . It will pass tests like aida (10 hours test), real bench (8hour test) , x265 but it will fail OCCT within secs!! My question is if my chip will be fried from overclocking will intel be able to see that and void my warranty?

 

[jaggerwild]

lol You got a Haswell-E, they can't tell. If your not going over 1.4 and have a decent cooler, I wouldn't worry about having to RMA the chip.

 

[RejZoR]

Someone once said it's better to use LLC Level 1. So far it's working fine with that. I also use spread spectrum which is suppose to increase stability. Might not clock as high, but relaistically, 4.5 GHz on 6 cores is already as fast as you'll ever need imo...