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Skylake Overclocking Guide [With Statistics] - Page 333

post #3321 of 11372
Quote:
Originally Posted by Jpmboy View Post

Stable at 4.7 with 1.34V but not stable at 4.8 with 120mV higher vcore? Lower cache to 4.0 and lower vcore to like 1.4V and try again. Until you find the max the core can handle. It's likely the RB overnight fail - if you had the full ram allocation - is ram/cache. RB is a good system-wide stressor, for the cpu ""only" try x265 HWBOT bench with 4K 2x or 4x and p-mode... if the correction factor is less than 0,95 the OC needs tuning. It's fairly quick and at 4x is using a good amount of ram. thumb.gif
Once past that, try your usual stress test list. FM benchmarks really do not stress the system much, tho 3DMK11 Physics is pretty tough.

Tnx for your answer, will re-test the 4.7 1,34v settings as your per your input to make sure that is correct. ? is how long do I run HWBOT, I have never used it before to be stable? I was thinking to lower my Ram to 2133mhz as well since they are not the greatest. Yes I was testing at 16G full ram setting at realbench. once I pass the 4.7ghz and make 100% sure im stable then I will try what u told me as well at 4.8.
Quote:
Originally Posted by Balu0 View Post

Try the PPL bandwidth lvl6 to 8 setting, but careful, it will up your temp by minimum 5 C (maybe start lvl5 ?), it helped me stabilize 4.7.

Will set as requested once I get home from work tonight..

thank you both for you inputs.
post #3322 of 11372
Hi,

I am only able to get 4.4GHz Prime95 Blend stable @ 1.38v, 84C. I feel that 4.4GHz @ 1.38v is not that great. Is there anything else I can do to reach a higher overclock?

ASRock Z170 Gaming-ITX/ac
G.Skill RipJaws V DDR4-2400 15-15-15-35
Antec 620M High Current Gamer Modular
Noctua NH-D9L
Thermaltake Core V1 Mini
Windows 10 Pro

I did 4,4GHz @ 1.35v 10 minutes of Prime95 Blend before a core failed.

Would getting an ASUS board help? When I bought the ASRock the ASUS was not available.

I will add two 80mm extractor case fans and reapply thermal paste in an effort to reduce temps.

I did 4.5GHz @ 1.45v (Max I want to try) 10 minute Prime95 Blend stable. Temps rose to 95C!

Is my chip just not that good or could I reach 4.6GHz with better cooling?

Any other settings to change in BIOS?

I have delided before but don't know if it's worth it with this chip.

Thanks
Edited by SamLeach - 10/29/15 at 10:32am
post #3323 of 11372
Quote:
Originally Posted by SamLeach View Post

Hi,

I am only able to get 4.4GHz Prime95 Blend stable @ 1.38v, 84C. I feel that 4.4GHz @ 1.38v is not that great. Is there anything else I can do to reach a higher overclock?

ASRock Z170 Gaming-ITX/ac
G.Skill RipJaws V DDR4-2400 15-15-15-35
Antec 620M High Current Gamer Modular
Noctua NH-D9L
Thermaltake Core V1 Mini

I did 4,4GHz @ 1.35v 10 minutes of Prime95 Blend before a core failed.

Would getting an ASUS board help? When I bought the ASRock the ASUS was not available.

I will add two 80mm extractor case fans and reapply thermal paste in an effort to reduce temps.

I did 4.5GHz @ 1.45v (Max I want to try) 10 minute Prime95 Blend stable. Temps rose to 95C!

Is my chip just not that good or could I reach 4.6GHz with better cooling?

Any other settings to change in BIOS?

I have delided before but don't know if it's worth it with this chip.

Thanks

I know it isn't really recommended here...but why not use a program that isn't so stressful? I use Intel XTU (test for 8-10 hours). I am stable at 4.6GHz and 1.29V, 4.7GHz and 1.345V, and I am going to be doing testing for 4.8GHz as well. I have yet to have any issues at all (I don't do heavy video encoding, photo editing, etc though).
    
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post #3324 of 11372
Quote:
Originally Posted by JohnnyVader View Post

Tnx for your answer, will re-test the 4.7 1,34v settings as your per your input to make sure that is correct. ? is how long do I run HWBOT, I have never used it before to be stable? I was thinking to lower my Ram to 2133mhz as well since they are not the greatest. Yes I was testing at 16G full ram setting at realbench. once I pass the 4.7ghz and make 100% sure im stable then I will try what u told me as well at 4.8.
Will set as requested once I get home from work tonight..

thank you both for you inputs.
you're welcome. thumb.gif
I'm saying... if it actually is stable at 4.7core and 4.7 cache with 1,34V vcore, lower cache to 4.0, raise core to 4.8 and set vcore to 1.4V (i'd try 1.38V first) and try a benchmark again. Generally, each 100MHz costs 10mV per core. 12-15mV or so with HT on the cores. So a 6600K is roughly 40mV per 100MHz. When you start to see 75+mV per 100MHz the cpu is off the linear part of the VID line... and headed off the reservation for 24/7 use, IMO. Benchmark runs are a different thing and this does not apply since it is not a 24/7/365 OC.
The HWBOT x265 benchmark takes 10-30min depending on settings and processor speed. You can DL it HERE
in order for it to run you need to enable the high precision timer (HPET), open an elevated cmnd prompt and type "bcdedit /set useplatformclock yes" . you can disable it if you want with the same cmnd, change yes to "no"
The x265 benchmark is a quick(er) stability test, especially if you run 4x or 8x: a failed "part" as it's called is def fail. As your OC tunes up the correction factor becomes the value to watch. (ignore the FPS score for this purpose).
run it as i posted in the earlier post (expand the picture)
Edited by Jpmboy - 10/29/15 at 11:09am
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post #3325 of 11372
Quote:
Originally Posted by CC268 View Post

I know it isn't really recommended here...but why not use a program that isn't so stressful? I use Intel XTU (test for 8-10 hours). I am stable at 4.6GHz and 1.29V, 4.7GHz and 1.345V, and I am going to be doing testing for 4.8GHz as well. I have yet to have any issues at all (I don't do heavy video encoding, photo editing, etc though).

I can run 4.6GHz with XTU (tested only 5 minutes) but Prime95 errors in 1 second @ 4.6GHz. I don't want my CPU to error.
post #3326 of 11372
Quote:
Originally Posted by SamLeach View Post

I can run 4.6GHz with XTU (tested only 5 minutes) but Prime95 errors in 1 second @ 4.6GHz. I don't want my CPU to error.

Yea I understand that - I fail x264 within minutes with my settings, but pass both AIDA64 and XTU for 10+ hours. I don't know what you use your computer for, but I would evaluate the types of tests you use based on that. I know of a lot of people (on other sites) who just use XTU as their ONLY test and have been fine for years (for other Intel chips including Skylake - although Skylake hasn't been out for years). There is another great guide I follow in addition to this one that recommends XTU as its only test.

The point is...why run more voltage than needed just to pass a certain benchmark if your CPU will never see anywhere near what that certain benchmark is putting your CPU through.

Again, I pass XTU and AIDA64 at 4.6GHz and 1.29V for 10+hours, but will fail RB or x264 within minutes. My voltage has to be at like 1.34-1.35V (from what I recall) to pass RB or x264 - which in my opinion is WAY overkill for my needs.

Now if you are wanting to post up on the Overclock Spreadsheet here, then yea you will need to pass at least x264.
    
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post #3327 of 11372
Quote:
Originally Posted by Balu0 View Post

Try the PPL bandwidth lvl6 to 8 setting, but careful, it will up your temp by minimum 5 C (maybe start lvl5 ?), it helped me stabilize 4.7.

Scary option. Tried it here just now and it raised temps by 9 degrees on hottest core. The stock (auto) voltage for CPU PLLs OC is 0.6v, raising this to level 6 increased that voltage to 1.416v which sounds like an awful amount...
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post #3328 of 11372
Quote:
Originally Posted by error-id10t View Post

Scary option. Tried it here just now and it raised temps by 9 degrees on hottest core. The stock (auto) voltage for CPU PLLs OC is 0.6v, raising this to level 6 increased that voltage to 1.416v which sounds like an awful amount...

Ye level 6 was Asus's idea, I would go lower, much lower biggrin.gif
post #3329 of 11372
Quote:
Originally Posted by Balu0 View Post

Ye level 6 was Asus's idea, I would go lower, much lower biggrin.gif
doh.gif
that value is from the extreme OC guide... and relevant with bclk over 300.

this: SkylakeOverclockingGuideAutosaved2.docx 862k .docx file

vs

This

from: http://www.overclock.net/t/1568154/asus-north-america-asus-z170-motherboards-q-a-thread/0_20

Edited by Jpmboy - 10/29/15 at 3:44pm
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