BSoD from CPU Deadlock @4.5GHz 5820K

CmdrJeffSinclair · Mar 24, 2017

So my thermals are amazing but I BSoD at 4.5GHz within 1 minute of stress tests

Currently Stable at-
4.375GHz
CPU Vcore 1.270v // LLC Lv5
Thermals- idles 24-31C Stress 66C avg. but hit maxes of 74C. Playing games like Just Cause 3 and GTA5 I rarely pass 59C after hours of gaming.

I should have enough room to hit 4.5GHz but every time I do I BSoD with CPU Watchdog_Deadlock error from Win10 x64

Steps I took trying to Achieve 4.5GHz:

1. I increased the Vcore gradually 0.5v from 1.270v and stopped at 1.29v (unwilling to hit 1.3v for such petty gains)
2. After BSoDing each time, I decided to disable LLC (set from Lv5 to Lv3 then to Lv1 which is disable) but still had the same BSoD

All my BIOS info looks fine. I dunno why it's doing this. I am stress testing and writing this at the same time.

Used AIDA64, RealBench and Memtest86+ for hours with no issue but as soon as I OC to 4.5 nothing but problems.

Any possible advice for something I may have missed?

Full Specs in signature

Jwpanz · Mar 24, 2017

Have you tried 1.3 volts just to see if that works? A jump from 1.29 to 1.3 isn't that bad but I do understand your point.

You could also just have a chip that doesn't overclock well. The silicon lottery sucks.

maxwellmelon · Mar 24, 2017

what freq and multiplier are your trying to get 4.5ghz?

also remember voltage increase is not linear. so to go 100mhz faster may use an extra .001 volt but to go 200hmz faster may be .003 and 300mhz may require .004

at this point you are far away from the base freq by almost 1ghz so .02 volts your trying might not be enough to gain 125mhz. you also could be at the end where no more voltage will gain more speed depending on the cpu lottery you got.

just also make to check your cpu input voltages/load lines some times a small bump up there can help. theres no clear cut answer because every oc is diffrent

CmdrJeffSinclair · Mar 24, 2017

Jwpanz :

Yeah I can try that. I hear on the internet that 1.3v is considered MAX safe for long-term use of a 5820K. So far I'm extremely impressed with my thermals given the OC so far and the mid-range water cooler I have. I will try 1.3v and if it BSoDs I'm not going to try more. Deadlocks I read I very bad for the CPU.

I'll get back with you in a few minutes.

CmdrJeffSinclair · Mar 24, 2017

maxwellmelon :

1.270 to 1.3v vcore for only 125 MHz is a massive jump for what, 1-2FPS in a game lol
I'll get back with you guys in a few. The main reason I do this is for better 4K screen recording performance. At 4GHz I could not get smooth recording, jumping to 4.25GHz became pretty smooth with some frame jumps. 4.375GHz became even better so I wanted to see if 4.5 would be the ticket.

CmdrJeffSinclair · Mar 24, 2017

maxwellmelon :

It just won't hit 4.5
I upped to 1.3v and it lasted 3m in stress vs 1m but BSoD

Then I dropped to 1.297v vcore but upped the CPU cache from 1.15 to 1.25v and lasted 3m til BSoD

I don't understand, my thermals are not the issue so what is?

BCLK mode set to high
LLC off (lv1)
Vcore tried 1.297 and 1.3
SA offset 0.409 (default)
CPU Cache voltage upped from 1.15 to 1.25
RAM slightly upped from default 1.35v to 1.38v

Only thing I can think of is dropping RAM from 3000 to 2400MHz which is not helpful for what I need

Anything else I can do? It really looks like undervoltage is the BSoD but isn't going past 1.3v crazy?

What do I even gain from a 125MHz increase? I saw noticeable improvement in screen recording from 4GHz to 4.375GHz + dropping RAM timings from 15-17-17-35 to 14-16-16-34 but is 125MHz worth it by itself? I'm wondering if the RAM is my weakest link since writing 4K raw data is bandwidtrh intensive but dropping to CL13 just can't happen, I've tried and failed Memtest utterly with 0 errors after hours at CL14 to 1000s of errors within seconds at CL13

CmdrJeffSinclair · Mar 24, 2017

Jwpanz :

I posted again in case you had advice

tsnor · Mar 24, 2017

what are you doing with cache/ring ? leaving stock x30?

maxwellmelon · Mar 24, 2017

what is your BCLK are your using? are you using higher then 100? sometimes different BCLK/ CPU multipliers can effect overclock stability

CmdrJeffSinclair · Mar 24, 2017

maxwellmelon :

My BCLK is 125. It is impossible to change to 100 because RAM drops to 2400MHz. My options are XMP 2.0 which forces 125BCLK or Auto which still forces 125. Manually putting in 100 forces RAM 2400MHz but for my video purposes the higher RAM speed is better than lower RAM speed + Higher clock so I leave 3000MHz with 125 BCLK

Multiplier is 35 =4.5 at 3000MHz RAM speed 125 BCLK
I have tried everything shy of messing with voltages other than ram/vcore voltages

I'm pretty good at overclocking but this one has me stumped. Temps are superb and the combinations of chagnes I've tried from 4.375 to 4.5ghz are definitely in the realms of advanced OC'ing so I'm timid to play with more voltages.

I nuse HWMonitor 1.31 and temps are stable. I have 7 fans total with the liquid cooling so I'd expect as much. I'm certain this is undervoltage but going to 1.3v is not great and past it seems crazy. I've read that even stable overclocks at 1.3v vcore can still kill a CPU even when everything checks out. I want this to last 4+ years

CmdrJeffSinclair · Mar 24, 2017

tsnor :

Set to auto
I can achieve 4.5GHz OC (45/All Core) with 3000MHz RAM still if I set the BCLK to 150 and ratio to 20. It just won't let me do this crap manually!!!! So STUPID!!!!!!!!!!

tsnor · Mar 25, 2017

CmdrJeffSinclair :

As an experiment, set to X30. The AUTO settings may be giving you high (X40+) ring setting when you OC to X45, and that becomes the OC limit.

I've seen many experiments (but none with 5820K) that show that a bit higher multiplier for cpu and much lower ring/cache multiplier is faster.

CmdrJeffSinclair · Mar 25, 2017

tsnor :

I actually tried all of that already. I even left the Cache at stock 3000MHz where the multipler for CPU was 35 and the multiplier for Cache was 24 and I could not even post. That's when I started messing with voltages which was even more confusing when nothing ever worked

However when set to auto the ring is already at stock so based on what you said I'm probably already at optimal settings for CPU/CPU Cache. I am under the belief that my unwillingness to change my RAM from 3000MHz 14-15-15-34 to 2444MHz is the deciding factor because I've read that Haswell-E with the 5820k in particular has issues with heavy OC while RAM is past 2444/2666. That's probably why my BIOS does not let me manually change my BCLK without automatically dropping the RAM speeds to 2444/2666.

Since I started all of this to prevent the large gap of speed between the CPU/CPU Ratio (4375/3000) I guess based on what you said I'm still doing fine. Most people say to get the ring within 300-500MHz of the CPU Ratio however I'm utterly incapable of it. I still see benefits. My memory speeds have not suffered as I've benchmarked with AIDA64 so maybe the loss to gain is not the deciding factor for my system as I still see gains in CPU and Memory Benchmarks.

What do you think?

tsnor · Mar 25, 2017

".. Most people say to get the ring within 300-500MHz of the CPU Ratio..."

Look to see benchmark results that go with the advice. This is typical of what I read for performance of OC'ing ring/cache, they say not to bother OC'ing ring untim you get a max stable CP clock, and even then ring is not really noticeable :

http://www.overclock.net/t/1411077/haswell-overclocking-guide-with-statistics

https://linustechtips.com/main/topic/28465-haswell-cpu-ring-ratio-tests-and-results/

CmdrJeffSinclair · Mar 25, 2017

tsnor :

So did I do things out of order and get lucky with an OK overclock?

1. OC CPU
2. then OC CPU Cache
3. then do RAM MHz/Timings

Correct?

I posted my performance scores below in AIDA64. Are they Stock/OK/Good/Great?

CmdrJeffSinclair · Mar 25, 2017

AIDA64

5820K @4375MHz
Dual DDR4-3000 16GB 14-16-16-34 CR2

MEMORY READ 42566 MB/s
MEMORY WRITE 23962 MB/s
MEMORY COPY 35463 MB/s
MEMORY LATENCY 62.4ns
CPU QUEEN 76916
CPU AES 29792 MB/s
CPU HASH 6712 MB/s
CPU ZLIB 561.8 MB/s
CPU PHOTOWORXX 18807 MPixel/s

CmdrJeffSinclair · Mar 25, 2017

I finally figured a couple things out.

I managed to get my CPU Cache to 3500MHz and pass stress
I learned that my RAM @3000MHz with a 5820K CANNOT change BCLK to anything other than 125. It is simply a limitation and affects all makes/models of RAM and MOBOS. Everyone I've seen with a 5820K + 3000MHz RAM had to lower RAM to either 2666/2444MHz to be able to change BCLK to manually fine-tune for a higher CPU OC

So that's that. I am stable at
CPU 4375GHz @1.270v vcore 35x multiplier 125BCLK
CPU Cache 3500MHz voltages left on auto
LLC set to lv3 but I can probably be ok at lv5 and lv1
RAM 3000MHz 14-15-15-34 2T @1.35v

I only wish my memory read/write/copy was more consistent with other overclockers
AIDA64 puts me at READ 44GB/s WRITE 24GB/s COPY 36GB/s LATENCY 61.2ns

This is the best I can achieve. I have lowered timings to 13-14-14-33 but fail Memtest86+ and don't care to play with those timings a little more for what 2MB/s performance increase for all the work.

Let me know if this is all OK. I tried looking up other 5820K overclock benchmark results that people post but they are hard to find. I am going to run 3DMark today and see what score I get.

BSoD from CPU Deadlock @4.5GHz 5820K

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Splendid

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Splendid

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Reputable

Splendid

Reputable

Splendid

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