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

HaKN ! · Aug 25, 2015

Hey TPU forums , my first thread here

First off all , ive been trying to find any information about a "safe" limit for volt overclocking , but it seems that people around the OC community have diffrent opinion about it.

Right now my i7-5820k is overclocked to 4.5 with 1.295 volt stable 24/7. BUT is it dangerous for me to go higher? is there any point that for me to go higher? i will like to hear youre opinion about it

Thx.

Its good to be a member of a respectfull site/forum/community

Schmuckley · Aug 25, 2015

I million Jiggawatts! :rockout:

I'm keeding.
brb and I'll tell you somewhat what it is..
Basically whatever you can get out of it without going over 85C.
I'm @ 4.45 with 1.245v
There's a profile with 1.41 @ 4.77Ghz..that could be kind of dirty, though.
I'm going to say about 1.35v on air/water.
Although it depends on how cool your chip runs.
You may can get more Mhz with the same Vcore by increasing input/ring/uncore.

vega22 · Aug 25, 2015

my little haswell core has had 1.4v all its life without issue.

EarthDog · Aug 25, 2015

Big haswell, lol... haswell-e.

I wouldn't go much over 1.4v with ambient cooling 24/7.

No point to go higher unless you like to benchmark.

GhostRyder · Aug 25, 2015

HaKN ! said:
Hey TPU forums , my first thread here

First off all , ive been trying to find any information about a "safe" limit for volt overclocking , but it seems that people around the OC community have diffrent opinion about it.

Right now my i7-5820k is overclocked to 4.5 with 1.295 volt stable 24/7. BUT is it dangerous for me to go higher? is there any point that for me to go higher? i will like to hear youre opinion about it Thx.

Its good to be a member of a respectfull site/forum/community

I have heard many different things and read quite a lot of different answers on this subject. I have heard keeping it below 1.4 is a must on this platform from most with others saying beyond 1.35 is starting to get toasty.

So my advice is to keep it below 1.35, 1.3 and below is what I run at.

ZenZimZaliben · Aug 25, 2015

Safe voltage limit is the voltage Intel specs the chip at. Anything beyond that is not as safe and that is the gamble with OC'ing. It will really depend on how your chip reacts to the voltage increase. If you are seeing nominal gains beyond 1.35v then it might be better to let the extra 200mhz go and be happy with 4.5Ghz.

HaKN ! · Aug 25, 2015

EarthDog said:
Big haswell, lol... haswell-e.

I wouldn't go much over 1.4v with ambient cooling 24/7.

No point to go higher unless you like to benchmark.

Just thought that "big haswell" sounded better

So at a 1.4 or under is harmless or?

EarthDog · Aug 25, 2015

You will want to upgrade before it dies.

vega22 · Aug 25, 2015

from what i have seen on my mates 5820 it runs out of cooling before voltage.

cadaveca · Aug 25, 2015

HaKN ! said:
Just thought that "big haswell" sounded better

So at a 1.4 or under is harmless or?

1.4V, not 1.401V. Also, vInput no higher than 1.95V.

marsey99 said:
from what i have seen on my mates 5820 it runs out of cooling before voltage.

Chips are crazily varied. I have a couple of 5930K, one does 5 GHz, the other tops out @ 4.5 GHz @ 1.3v, and won't go to 4600, even with 1.4V. Can't rate general OC performance by leakage of a single CPU alone

vega22 · Aug 25, 2015

for sure, even less from chips from another bin

Schmuckley · Aug 25, 2015

cadaveca said:
1.4V, not 1.401V. Also, vInput no higher than 1.95V.

Chips are crazily varied. I have a couple of 5930K, one does 5 GHz, the other tops out @ 4.5 GHz @ 1.3v, and won't go to 4600, even with 1.4V. Can't rate general OC performance by leakage of a single CPU alone

Eh..I disagree with that input..I'd go up to 2.1-2.
It most likely is not necessary,though.
On regular Haswell 2.3 is not a problem.

cadaveca · Aug 25, 2015

Schmuckley said:
Eh..I disagree with that input..I'd go up to 2.1-2.
It most likely is not necessary,though.
On regular Haswell 2.3 is not a problem.

regular haswell isn't Haswell-E. Shoving 2.3V @ 125W, sure, no big deal, but Haswell-E is 300+ watts on OC = lowered safe vInput. never found an increase in vInput to really matter beyond 1.9V myself.

HaKN ! · Aug 25, 2015

marsey99 said:
from what i have seen on my mates 5820 it runs out of cooling before voltage.

Well my 5820 dosent go above 70 with WC at 1.295 - 4.5@

So i think i got a little more headroom

Schmuckley · Aug 25, 2015

HaKN ! said:
Well my 5820 dosent go above 70 with WC at 1.295 - 4.5@

So i think i got a little more headroom

If that's under a Cinebench load or something;I'd say you have a decent amount of headroom there!.
I know mine would run a little higher safely if the water system was cleaner :oops:

.
Eh,clean blocks or reduce OC for a couple days..hehe.

HaKN ! · Aug 25, 2015

Schmuckley said:
If that's under a Cinebench load or something;I'd say you have a decent amount of headroom there!.
I know mine would run a little higher safely if the water system was cleaner .
Eh,clean blocks or reduce OC for a couple days..hehe.

Thats under ASUS Real Bench. in games or apps , never goes above 50-60C

cadaveca · Aug 26, 2015

HaKN ! said:
Thats under ASUS Real Bench. in games or apps , never goes above 50-60C

RealBench has proven itself as a decent testing tool for me when it comes to CPU OCs and temps.

Schmuckley · Aug 26, 2015

Do eet!

HaKN ! · Aug 26, 2015

Schmuckley said:
Do eet!

Do what?

Freezer · Aug 27, 2015

HaKN ! said:
Do what?

2.59V @ 9Jhz

R-T-B · Aug 27, 2015

Freezer said:
2.59V @ 9Jhz

You aren't sounding very "Freezer" like today.

Schmuckley · Aug 27, 2015

HaKN ! said:
Do what?

OC your CPU more!
http://valid.x86.fr/rhmgjf

vega22 · Aug 31, 2015

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:

HaKN ! · Sep 1, 2015

That is the best so far that i got

4.5 at 1.298v.

Maybe that will do for me i guess

cadaveca · Sep 1, 2015

HaKN ! said:
That is the best so far that i got

4.5 at 1.298v.

Maybe that will do for me i guess

That's actually fairly good in my books.

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

HaKN !

Schmuckley

vega22

EarthDog

GhostRyder

ZenZimZaliben

HaKN !

EarthDog

vega22

cadaveca

My name is Dave

vega22

Schmuckley

cadaveca

My name is Dave

HaKN !

Schmuckley

HaKN !

cadaveca

My name is Dave

Schmuckley

HaKN !

Freezer

R-T-B

Schmuckley

vega22

HaKN !

Attachments

cadaveca

My name is Dave

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