i3-8350k: Whats considered unsafe voltage?

[Double Deez Nuts]

Due to my CPU being quite unstable im gonna have to push at least 1.320v or higher, when should i call it quits?

[𝔇ave]

much over 1.35v is getting a little excessive..

what clocks are you trying to achieve that makes your current voltage unstable?

you should be able to hit 4.7-4.8ghz in avx workloads with 1.32v

[Double Deez Nuts]

Originally posted by Dave:

4.7ghz in 1.32v

using this right now, not sure if its stable though. was running 4.6 at 1.3

[𝔇ave]

Originally posted by Double Deez Nuts:

Originally posted by Dave:

4.7ghz in 1.32v

using this right now, not sure if its stable though. was running 4.6 at 1.3

stress the cpu using prime95 with avx. you will soon find out if it is stable

[_I_]

find its wall, every cpu is different
where it needs more voltage/cooling for each cpu multi step

and it depends on cooling, aim for under 80c to give some overhead on a 24/7 oc

oc is steps, write down everything
cpu multi, voltage, temp (after 15+min ibt/prime95)
chart it out

[Double Deez Nuts]

4.7 at 1.330v running CPU-Z stress test for 15mins, anything lower and it crashes

Originally posted by Dave:

stress the cpu using prime95 with avx. you will soon find out if it is stable

prime95 error'd and wont start the stress test, not sure why but i cant use it

[_I_]

how are the temps while stress testing?

[Double Deez Nuts]

Originally posted by _I_:

how are the temps while stress testing?

67c with a 360mm rad. lots of thermal headroom, shame the chip cant go any higher without possibly damaging it

[Autumn_]

Well, you can go up to 1.52v according to Intel, but you'll most likely run into thermal limits way before then.

[tacoshy]

Originally posted by Autumn:

Well, you can go up to 1.52v according to Intel, but you'll most likely run into thermal limits way before then.

Exactly and if you not 100% know what you do and have a good board stay 0.1V below maximum rating.

Originally posted by Double Deez Nuts:

Originally posted by _I_:

how are the temps while stress testing?

67c with a 360mm rad. lots of thermal headroom, shame the chip cant go any higher without possibly damaging it

No it's not going to damage it unless you disable security features.

Originally posted by Double Deez Nuts:

4.7 at 1.330v running CPU-Z stress test for 15mins, anything lower and it crashes

Originally posted by Dave:

stress the cpu using prime95 with avx. you will soon find out if it is stable

prime95 error'd and wont start the stress test, not sure why but i cant use it

It's because CPU-Z is not a stress test and does a poor job in finding unstable OC settings.
Prime 95 v26.6 FTT's 1344 are the way to go to find unstable clocks. If it pass it is not guaranteed to be stable but you best chance.

[Double Deez Nuts]

Originally posted by tacoshy:

Originally posted by Double Deez Nuts:

67c with a 360mm rad. lots of thermal headroom, shame the chip cant go any higher without possibly damaging it

No it's not going to damage it unless you disable security features.

i always hear people saying to never use anything close to 1.4 for daily usage
how true is this?

[_I_]

depends on the cpu

with better cooling you can raise the voltage

basic steps
low temps, stable = raise cpu multi
low temps, unstable = raise core voltage
high temps, stable = lower core voltage
high temps, unstable = go back to last good and stop

change core voltage by the smallest step available in bios
along with cpu multi

also disable c states and turbo when testing, you can turn them back on when done

[Kaihekoa]

I would delid it if you can cheaply do so. Why do you have an i3 on a 360mm radiator?

[tacoshy]

Originally posted by Double Deez Nuts:

Originally posted by tacoshy:

No it's not going to damage it unless you disable security features.

i always hear people saying to never use anything close to 1.4 for daily usage
how true is this?

Not true at all. The chip is rated for 1.52V.
Problem with high voltage is the heatoutput and that your VRM must be decent.