[Paradigm Shifter]

I'd be really, really interested in long-term stability. For example, will it last six months, a year, two, five, ten? What about constant (but fluctuating) load for around five months (which is the longest I've had any single work processing run take).

 

[Blameless]

He must have watched that YT video that der8auer did with some Intel engineer in which he said that "100C is perfectly fine as long as you let your CPU cool off for a while" or something along those lines. Total marketing bullcrap even a 80IQ simpleton shouldn't fall for.

There is nothing wrong with the CPU running at 100C in demanding workloads...if everything is within spec.

There is also no contradiction between what that Intel engineer, whom you've misquoted, stated and your own statement, "100C on stock clocks and volts may be "fine", not overclocked and overvolted."

The problem is that 350w at over 1.4v is more than double the default long duration power limit and nearly 200mV past the normal load vcore. This is way beyond spec in current and voltage, so the specification for acceptable temp, which assumes much lower figures, doesn't mean anything in this scenario.

I'd be really, really interested in long-term stability. For example, will it last six months, a year, two, five, ten? What about constant (but fluctuating) load for around five months (which is the longest I've had any single work processing run take).

Wouldn't surprise me if it lasts as long as SilentMar plans to use it, but I'd still bet if the same reliability figures were used in Intel's own validations that they would have certified ~130C at stock clocks/volts.

Would still be interested in a postmortem a year from now.

 

[deidian]

Yes, there are people that OC that don’t buy new chip each year 😂..

I do and it's not a question of money. More like time: since I watercool the hell out of everything tearing all apart means 1 month of fiddling during free time if not more. Then the fine tuning of the system itself.

I also like to be able to use my system without having up the top of my head a checklist of things I want to do over it.

So in the end I personally need a compromise between having fun with hardware fiddling and having fun using it at the same time.

Yearly schedule of CPU upgrading is too tight for me: let alone swapping or testing several manufacturers for single digit percents.
I would consider it if I didn't liked watercooling too and every swap was a straightforward as buy this week and plug & play the hardware itself in one day and you're ready to go.

 

[s1rrah]

Hmm... would recommend investing in a custom loop. I'm not saying you're wrong here but I'm not convinced you've tested this long enough to make any definitive conclusion. At least I'm not ready to risk my $600 investment

I also think something is buggered with your volt tuning. I used this Guide and tuned my LLC ( AC_LL & DC_LL) and VF curve in accordance and my my volts are at 1.5 but my R23 watts are 290W, occasionally peaks to 300W. I'm rock steady form 6.2 light load to 5.7 heavy load. IIRC, settings were 60, 60, 60, 60, 59, 58, 58, 57 but I would generally get a 200Mhz boost at light and medium load even though TVB was disabled. Custom loop with direct die block.

View attachment 2604903

But I'm now just running stock with LLC curve optimized IAW the above guide, Asus MCE disabled and with a 100W and 10*C drop, I'm still boosting very close to the same clocks as the OC with R23 only dropping 1k points.

Dango. Good temps.

I'm going to delid/relid with new IHS this week just because.

My own CBr23 5min temps with an H115i and a near-stock (55p/43p) all-core OC:

 

[StAndrew]

Dango. Good temps.

I'm going to delid/relid with new IHS this week just because.

My own CBr23 5min temps with an H115i and a near-stock (55p/43p) all-core OC:

View attachment 2605067

I may be selling this block soon if you want it. It's a 12th gen supercool direct die block and I just got a 13th gen block which I can hopefully install this weekend.

 

[s1rrah]

I may be selling this block soon if you want it. It's a 12th gen supercool direct die block and I just got a 13th gen block which I can hopefully install this weekend.

Thanks. I'll be sticking with AIO options for now. I do frequent rendering, therefore my noticing this thread but for now, I mostly use NVENC for rendering which makes CPU thermals sort of not an issue at the moment. Otherwise, pleased with just dialing things back to keep temps sub ~80C for daily/work use.

I do envy the stellar temps provided by a good custom loop, however, have to say. Hoping to at least shave around 8C to 10C off with a proper delid/relid so fingers crossed.

~s

 

[Uncle Dubbs]

The current power limit or limit on power consumption doesn't make a difference in terms of how stable the CPU is around 220-230W, at 85C, all-core, 5.9GHz. A 105C limit with a bit of overshoot at 110C is perfectly fine.

LLC Saturation only helps to boost voltage a bit higher to 6.0GHz for undervolted LLC, such as LLC8, at 1.25V all-core, 5.4GHz. However, it requires both a very good CPU and good VRM, otherwise, it won't work. My CPU crashes straight up with LLC8, LLC7, LLC6 with 1.44V overdrive for 6GHz. The voltage curve for other frequencies is too low. When the CPU runs with borderline LLC5 + Saturation above 40A, the 350W 105C thermal throttled voltage is 1.40V, which is even higher than Adaptive voltage 1.33V.

It's still the combination of LLC, TVB, and Adaptive + Offset voltage that makes a difference. The CPU cannot be stable when the voltage is lower than 1.42V at 5.9GHz, 85C. But there are only two points of effective offset voltage: the point of 6.0GHz, 1.44V, and the point below 5.7GHz, 1.35V. Other frequencies, such as 5.9GHz, 5.8GHz, will be affected by LLC. 5.4GHz is completely ineffective, no matter what the offset value is. LLC5 gets 1.412V at 5.9GHz, which is not stable at 85C, while LLC4 gets 1.426V at 5.9GHz. This also results in 1.41V at 5.7GHz, which can be offset to a lower voltage, but I would rather use a constant high voltage instead of a constant undershoot and overshoot due to higher LLC.

There are only three points of 8-Pcore TVB as well. Anything higher than 85C, I can only set 5.7GHz TVB, or I could have set more points, such as 5.8GHz at 85C-100C, then 5.7GHz 100C-105C.

I run the same mobo. Care to share a couple screen shots of your bios settings? Did you just set 60x fixed all core , manual
Volt 1.44? I mean for light/gaming loads and temps not a prob - your right, it will be good…I was running mine similarly at first but wanted to learn a little about turbo and llc, ac/dc ll so I mixed it up - but, Honestly I dislike there has to be so many settings with these Things we pay a fortune for…they should be able
To adapt on their own …I don’t render or use
High loads…just game, bench and mem test.

 

[Nono31]

350w on this cpu is dangerous. what kill cpu is voltage and power. 1.42-1.44v in long term is imo to high like 350w. You risk in the future to kill it.

 

[Travis Scott]

your power is so much higher cuz the thermals are bad resulting in massive leakage, i have seen shocking reductions in power draw from going down 30C in load temps

 

[Efilnikufesin]

your power is so much higher cuz the thermals are bad resulting in massive leakage, i have seen shocking reductions in power draw from going down 30C in load temps

I had a 6700k that I ran at 4.9 at 1.45v, but under two 360 rads and a delid with liquid metal. I could prime 95 for 3 days and eventually get to 73C so I wasn't as worried. It can still do 4.9, at the same voltage, hasn't degraded.
You can pump voltage more if your temps are low, but voltage and temps out of control are a whole nother ballgame. I mean degradation takes time, but is this really contributing to an overclocking forum if you are just going to do a burn test on a CPU then just buy another next year?

 

[SilenMar]

your power is so much higher cuz the thermals are bad resulting in massive leakage, i have seen shocking reductions in power draw from going down 30C in load temps

People like to jump on when I just use an old Corsair H115i 280mm. My setup can outperform most 360mm out there. You put a 1.42V and see how the 350W temps go on a 360mm on prime95. It's still the similar temperature. The point is the CPU runs just fine. You put a 330W power limit in motherboard then it runs 99C. Suddenly CPU doesn't boil like water anymore.

 

[Travis Scott]

Run a set load during winter months, observe the change in power required for X calculations as the temp goes down as you open the window, its absolutely huge difference like 30% sometimes going from 100c to 50-60c

 

[SilenMar]

Run a set load during winter months, observe the change in power required for X calculations as the temp goes down as you open the window, its absolutely huge difference like 30% sometimes going from 100c to 50-60c

What's the deal with winter? The CPU sill goes 100C regardless if you run a 360mm in Antarctica with 1.42v 350W.

 

[Uncle Dubbs]

What's the deal with winter? The CPU sill goes 100C regardless if you run a 360mm in Antarctica with 1.42v 350W.

Well it’s the room air temp is what he’s saying and it’s true…even opening the side of case will help a ton. The air all around affects it…still didn’t see those bios shots. I keep my air in the house always around 71-72 but in some spring/fall I can keep the ac or heat off if the temps don’t change much in the house 😂

 

[Redwoodz]

OP must live in Alaska. 90% of homes in California where I live have no A/C. Try running that load 24/7 with no A/C for a year and tell me how your cpu holds up.

At the end of the day it should be said silicon varies. There is not a perfect voltage setting because they will all differ.

 

[Betroz]

Just because you can do something, doesn't mean you should. But hey, if you just need this CPU to last until 14900K comes out, go for it.

Good. Show me a game that uses 8 cores.

Battlefield 2042 uses MORE than 8.

 

[feldy]

OP must live in Alaska. 90% of homes in California where I live have no A/C. Try running that load 24/7 with no A/C for a year and tell me how your cpu holds up.

At the end of the day it should be said silicon varies. There is not a perfect voltage setting because they will all differ.

Thats the truth. No AC here in the bay area for the most part... I did end up buying a portable ac unit last year when it got bad and I couldn't take it anymore. Screw my 13900ks...Try taming the I9-7900x etc wtih out a delid and what not with no AC hah I only wish I had done a liquid metal application on that chip sooner then I did. Also im in the same boat now with my 13900ks its going to be rendering most of the time.

 

[StAndrew]

Just because you can do something, doesn't mean you should. But hey, if you just need this CPU to last until 14900K comes out, go for it Battlefield 2042 uses MORE than 8.

Well my games don't so I'm still not gaming at 5.7 and stable up to 6.1...

 

[SilenMar]

Just because you can do something, doesn't mean you should. But hey, if you just need this CPU to last until 14900K comes out, go for it.

I have 6.0GHz all core in games not like somebody with a delided CPU cooled by a 360mm but cannot even reach full 6.0GHz under a slightly little load.

 

[Betroz]

I have 6.0GHz all core in games not like somebody with a delided CPU cooled by a 360mm but cannot even reach full 6.0GHz under a slightly little load.

I'm curious to know if you are stable in multiplayer games like BF2042. Singel player games that put a very light load doesn't really count.