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i7 8700k overclock results and settings - Page 46

post #451 of 674
Quote:
Originally Posted by Zyrou View Post

if my batch helps my cpu good or not. my batch:L729C415

I am not chinese I am from Turkey but live in Hungary.

how many minutes enough for occt? In my opinion i am stable smile.gif cuz i am only gaming on this computer biggrin.gif


only difference for AC/DC 0 vid 1.40ish under load 1.325ish
AC/DC 1 vid 1.240 underload 1.265

ps: I have no clue about AC/DC just someone told me I have to put it 1
OCCT minimum 1 hour, if you think you are stable thats up to you, pretty clear to me it is not even close to stable if you crash in OCCT in 5 minutes. Anyway your P.C and your choice smile.gif
post #452 of 674
Quote:
Originally Posted by value144 View Post

Hello,

I'm in dire need of help.

I preordered an 8700k and my dealer came trough with a L729C231.

Now I can't get this chip to run over 4800 mhz all core on an Asrock K6 with a Scythe Mugen 5 Air cooler 2x140mm push/pull. The system was meant to be ultra silent but now I rather take the performance I could possibly get from this CPU.

Vcore offset -60 gives a max of 1.365Vcore, even with that offset. The VID peaks to 1.465.

My temps are everything but good, even a single cinebench run can show up to 87°, prime small Ftts is thermal throttling (allthough not crashing) after 3 minutes already.

I can get 4800 all core AVX-1 (dunno how to do 0 AVX offset in this asrock bios, when u enter "0" it turns to default wich is -4) with 4400 ring with a fixed Vcore of 1.28 but not any lower. I feel like I could get 5gHz working with above 1.4V but my cooling doesn't allow it.

VccIO: 1.15
VccSA: 1.15

LLC Level 2 on Asrock, so ~75%

2x8gb DDR4000 running in XMP standard settings at 1.35V (stock)

The CPU is asking for really heavy voltages. My suspicion is that my bad temps (Also Vram gets over 90° in any benchmark) come from a not ideal IHS and that maybe just those high base temps make the cpu so voltage hungry, and therefore bad performing.

Is it worth to delidd the chip, upgrade to 360 radiator and possibly even get a better motherboard? Or did I just pick that one trash chip out of that badge?
Or is the board just too bad?

Sounds like you are having exactly the same issues that I am experiencing. I have the asrock k6 gaming also, with bios 1.20. I can get it to run at 4.8 but it needs 1.365v, which is temp prohibitive (push pull h115).

My VID is insane also, hitting 1.465 as well. Getting the AVX issues during games also, with a clock of 4.7 going back to 4.3 in games, however in stress tests sits at 4.7.

Looking at this thread, there are others with the gaming k6 also having issues. Hard to say 100% that it is the mobo with out testing a known chip, but even the massive VID figures are fishy. I couldn't seem to find an equivalent to the asus 'IA AC/DC load line' in the bios either.
post #453 of 674
So is there any definitive answer as to whether there is a benefit to setting IA AC/DC Load Line to 1 on the Gaming 7? I see people suggesting it but im still unclear about this.
Edited by akumouu - 11/10/17 at 10:17pm
post #454 of 674
Quote:
Originally Posted by jmone View Post

I have a stock Batch # L729C249 and it is stable at 5ghz (12 hours stress test) @ 1.344 peaking at mid 80c temps with a 110i cooler. Quick tests (5min stress) was OK on 5.1 and crashed at 5.2

Had to also change my ram from G.Skill to Coarsair for stable XMP3200 however on my Hero X board with the 0505 bios.

Very happy with this chip.

Nope - was not stable even though it passed 12 hours of stress test (only used IXT stress test for this).... I found this out when double ripping/decrypting UHD BD and then bitsum checking the contents and found that frequently they were different. Dialed it back to 4.8ghz core / 4.5ghz cache ratio on the same voltage. Now it is working well.
post #455 of 674
Quote:
Originally Posted by jmone View Post

Nope - was not stable even though it passed 12 hours of stress test (only used IXT stress test for this).... I found this out when double ripping/decrypting UHD BD and then bitsum checking the contents and found that frequently they were different. Dialed it back to 4.8ghz core / 4.5ghz cache ratio on the same voltage. Now it is working well.
XTU and AIDA64 are not good stress tests regardless of how long you run them, Realbench or OCCT are a much better way to go smile.gif Unstable overclock can result in corrupting your Windows installation for those that dont realise this.
post #456 of 674
Thanks - Downloaded RealBench from the ASUS site (I have an ASUS MB). 2 Questions on the Stress Test:
- What Duration
- What Memory (eg if I have 32GB do I select 32GB?)

Thanks
Nathan
post #457 of 674
Quote:
Originally Posted by jmone View Post

Thanks - Downloaded RealBench from the ASUS site (I have an ASUS MB). 2 Questions on the Stress Test:
- What Duration
- What Memory (eg if I have 32GB do I select 32GB?)

Thanks
Nathan
If you have 32GB then set to 32GB run for at least 1 hour preferably 8 hours:)
post #458 of 674
Thanks mate - will report back.....
post #459 of 674
Quote:
Originally Posted by jmone View Post

Thanks mate - will report back.....
thumb.gif
post #460 of 674
Quote:
Originally Posted by akumouu View Post

So is there any definitive answer as to whether there is a benefit to setting IA AC/DC Load Line to 1 on the Gaming 7? I see people suggesting it but im still unclear about this.

That depends on what you consider a "benefit" to be.

Setting it to 1 will result in the actual voltage delivered to the CPU at all times to be closer to your settings. There will be very little change in voltage up or down as CPU load changes.


You may consider this to be desirable, but IMO that's personal preference. It will deliver more voltage than necessary when the CPU is idle or close to idle. It will limit voltage when the CPU is under full load. It can reduce system stability if your own voltage settings are slightly too low for full load situations.

Some people want absolute total control over voltage settings. Personally I'm willing to allow for a bit more fluctuation. As long as the system is stable, the temps are good, and the voltage is at a reasonable level under full load I'm perfectly happy to let the board adjust the voltage up and down as it sees fit for the situation. But I'm not one who is trying to find the absolute limits of the CPU either. I'm looking for a rock solid 24/7 overclock that will last for several years, so I'm making settings that are a bit on the conservative side in a lot of cases. If you're wanting to push the CPU to the limits a setting of 1 can help you find those limits by giving a more precise voltage delivery at all times.

So in short: If you want absolute voltage control a setting of 1 is preferred.
If you're willing to allow the motherboard to adjust the voltage up and down a little, then don't mess with it.

Which setting is better is entirely personal opinion, and dependent on what you're wanting to achieve.
Edited by moustang - 11/11/17 at 1:46am
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