Can't get i5 8600k stable at anything other then AUTO voltage and LLC lvl3

[Bing Chilling]

On my secondary PC that i upgraded from
it is only stable at 4.6ghz at 1.265v with no LLC
and 4.9ghz is only stable at AUTO voltage and LLC lvl 3
(sits around 1.4v when idle and 1.365/1.395v when fully utilized)
if i manually set the voltage to 1.365v or even 1.395v it crashes almost instantly
in prime 95 and linpax. Doesn't matter the LLC i set it to it will just crash.
what other settings should i be looking at to stabilize the CPU

Temps are 35-40c idle and 75-80c while on full load with auto voltage and llc lvl 3 @4.9ghz
and temps are 30-37c idle and 60-68c while full load with 1.265v and no llc @4.6ghz

I don't think temps are an issue but nearly 1.4v while full load is very high for a cpu
that i've seen be able to hit 5.0ghz at far far lower voltages

main reason is i'm selling this PC and i'd like it to perform as best as possible before doing so

the full specs are :
i5 8600k
ROG Strix gtx 1070
16gb ddr4 3200mhz
ROG Strix Z370-E
EVGA 650 N1 650W PSU
GAMDIAS Apollo E2 Elite Case
Crucial MX500 1TB
WD 2tb HDD

Heres the manual for the MOBO [dlcdnets.asus.com]

not sure what i'm going to price it at yet
but i use CAD currency.

anyways thanks for the help in advance.

[Bing Chilling]

Publicado originalmente por r.linder:

There's also nothing special to this for a CPU overclock, you literally just tweak vCore and the multiplier, and find whichever LLC mode works best. There's no extra settings that's going to make an unstable overclock work.

If you don't know what you're doing with overclocking

the oc is stable already at AUTO voltage and LLC lvl3
(sits around 1.4v when idle and 1.365/1.395v when fully utilized)
prime 95 and linpax over 24 hours with no crashes

That's the part you are missing.
there are quite a few of other settings that you can change.
that may or may not help with stability at lower voltages.

i even linked the manual so you can see the settings,
all i wanted to know was if i can get the voltages lower while remaining stable

i've said this a few times now and it doesn't seem like you are reading the entire posts
and comment after a few lines.

i can see that you don't seem to understand my questions or just aren't reading them so i will stop asking you.

[r.linder]

Publicado originalmente por Bing Chilling:

Publicado originalmente por r.linder:

There's also nothing special to this for a CPU overclock, you literally just tweak vCore and the multiplier, and find whichever LLC mode works best. There's no extra settings that's going to make an unstable overclock work.

If you don't know what you're doing with overclocking

the oc is stable already at AUTO voltage and LLC lvl3
(sits around 1.4v when idle and 1.365/1.395v when fully utilized)
prime 95 and linpax over 24 hours with no crashes

That's the part you are missing.
there are quite a few of other settings that you can change.
that may or may not help with stability at lower voltages.

i even linked the manual so you can see the settings,
all i wanted to know was if i can get the voltages lower while remaining stable

i've said this a few times now and it doesn't seem like you are reading the entire posts
and comment after a few lines.

i can see that you don't seem to understand my questions or just aren't reading them so i will stop asking you.

Auto voltage for overclocking is unwise, period, it can be straight up dangerous for the CPU.

[Komarimaru]

It's all based off silicon lottery. Some can get 5Ghz with LLC5/LLC3 and 1.3 Volts. Some cannot. Some even can drop down to 1.25V and remain stable even without an AVX offset(Which is needed for temperatures really if things get too hot)

Kicker is trying to keep it under 80C, due to hotspot temps, and what cooling ya have will also impact how well the OC works.

I will say though, I'd personally never go above 1.35V, but that's just me. If ya have to hit 1.4V to keep things stable, just aint got the chip nor cooling that can handle it.

Nothing else you can really change but the voltage and offset though. CPU SA is for memory controller, and CPU IO for PCIE, memory etc.

[nullable]

I'm not sure overclocking is worth it. I don't think it's going to increase the value of the PC or anything. Also anyone who buys it will be responsible for administrating it. If they want to overclock it, let them do it. It just sounds like your trying some well intentioned but unneeded over-complication.

[Bing Chilling]

this thread was a huge waste of time just as a FYI

i figured out how to lower the voltage and retain the overclock eventually.

asked the same question on overclock.net forums and the first reply solved it.

steam just aint the place to ask
when the majority of users have prebuilts

[A&A]

Publicado originalmente por Bing Chilling:

this thread was a huge waste of time just as a FYI

i figured out how to lower the voltage and retain the overclock eventually.

asked the same question on overclock.net forums and the first reply solved it.

steam just aint the place to ask
when the majority of users have prebuilts:DSTportal:

I'm interested to see where the problem was. Can I see the reply?

[Bing Chilling]

Publicado originalmente por Bing Chilling:

Publicado originalmente por r.linder:

There's also nothing special to this for a CPU overclock, you literally just tweak vCore and the multiplier, and find whichever LLC mode works best. There's no extra settings that's going to make an unstable overclock work.

If you don't know what you're doing with overclocking

the oc is stable already at AUTO voltage and LLC lvl3
(sits around 1.4v when idle and 1.365/1.395v when fully utilized)
prime 95 and linpax over 24 hours with no crashes

That's the part you are missing.
there are quite a few of other settings that you can change.
that may or may not help with stability at lower voltages.

i even linked the manual so you can see the settings,
all i wanted to know was if i can get the voltages lower while remaining stable

i've said this a few times now and it doesn't seem like you are reading the entire posts
and comment after a few lines.

i can see that you don't seem to understand my questions or just aren't reading them so i will stop asking you.

the solution was 1.380v
LLC lvl4
AVX offset 0
uncore Feq 4.6ghz
tRCD 18
tRP 18
tRAS 36
tRFC 560
CR n1/T1
CL Latency 17

and a bios update. with CSM support disabled.
to get 5.0ghz stable.

[Monk]

Well you got a good chip though that is very high voltage, given most 8700k's wouldn't actually hit 5GHz, it wasn't guarentee on 9900k's either.

Still, might be time to be thinking about saving up for a new system.

[Bing Chilling]

Publicado originalmente por Monk:

Well you got a good chip though that is very high voltage, given most 8700k's wouldn't actually hit 5GHz, it wasn't guarentee on 9900k's either.

Still, might be time to be thinking about saving up for a new system.

yeah i was just looking through my post history and i seen i never replied with the answer to how i got it stable, so i put up the answer here i'm planning to go onto AM5 within the next few months as i just did a gpu upgrade like 2 weeks ago from a 1070 to a 4060 (as i got it for cheap)

[Monk]

Nice.

[smokerob79]

let me tell you a little story about a old AMD 555 DUAL CORE......these chips were really defective 955 Quad cores that AMD off loaded with disabled cores as the L cash would work even if it was a single core....

i got one for 80 dollars....by the time i bought one it was late in the run and AMD was disabling good cores and selling them as 555's as the demand was there.....got a fully functional quad core that was able to over clock to 3.5ghz all cores from a base of 3.2(a good overclock for the time when you factor in a whole 2 extra cores)....my mom still has this chip running with most of my old parts....same motherboard, memory, power supply and one of my first SSD drives.....

BUT it now only runs 3.0ghz stable as a quad core.....its degraded after all these years....

[Bing Chilling]

Publicado originalmente por smokerob79:

let me tell you a little story about a old AMD 555 DUAL CORE......these chips were really defective 955 Quad cores that AMD off loaded with disabled cores as the L cash would work even if it was a single core....

i got one for 80 dollars....by the time i bought one it was late in the run and AMD was disabling good cores and selling them as 555's as the demand was there.....got a fully functional quad core that was able to over clock to 3.5ghz all cores from a base of 3.2(a good overclock for the time when you factor in a whole 2 extra cores)....my mom still has this chip running with most of my old parts....same motherboard, memory, power supply and one of my first SSD drives.....

BUT it now only runs 3.0ghz stable as a quad core.....its degraded after all these years....

my first ever CPU was a AMD Athlon II x3 450 and i remember unlocking the fourth core to turn it into a Phenom II x4 B50. Good times .