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post #1041 of 7219
i might try that but it would probably cripple the performance on apps using 1-4 cores?

I've posted my result before, up to 26*C difference between cores.

post #1042 of 7219
My OC
post #1043 of 7219
Quote:
Originally Posted by Mike211 View Post

My OC

hey.. it's Mike biggrin.gif a whole 27 posts in almost 4 years!

what are you using to test for stability?

anyway, I tried 4.4Ghz & 4.5Ghz - it won't even boot @ 4.5Ghz and insta-crashes @ 4.4Ghz. LOL..

It's quite stable at 4.3Ghz @ 1.270V which is nice! IBT 'Very High' 10 runs - RealBench Benchmark - 5x H.264 Encode - all pass without issue. Gaming for hours @ 5K with GPUs OC'd to 2100Mhz work fantastically well.

However, it's not so stable! I just tried encoding a 4K video w/ Adobe Media Encoder and it BSODs even at 1.290V! mad.gif

Is there something else I need to change like Cache Voltage? If so, what should I set the Cache voltage to?

@Jpmboy @SilentScone

PLEASE HELP!
     
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post #1044 of 7219
Quote:
Originally Posted by Baasha View Post

hey.. it's Mike biggrin.gif a whole 27 posts in almost 4 years!

what are you using to test for stability?

anyway, I tried 4.4Ghz & 4.5Ghz - it won't even boot @ 4.5Ghz and insta-crashes @ 4.4Ghz. LOL..

It's quite stable at 4.3Ghz @ 1.270V which is nice! IBT 'Very High' 10 runs - RealBench Benchmark - 5x H.264 Encode - all pass without issue. Gaming for hours @ 5K with GPUs OC'd to 2100Mhz work fantastically well.

However, it's not so stable! I just tried encoding a 4K video w/ Adobe Media Encoder and it BSODs even at 1.290V! mad.gif

Is there something else I need to change like Cache Voltage? If so, what should I set the Cache voltage to?

@Jpmboy @SilentScone

PLEASE HELP!

Basha, i think you will need around 1.31, 1.32 for fully stabe. what code of ur bsod?
HWe: bsod 101 increase vrin, bsod 127 increase vcore
BWe: bsod 101 increase vcore, bsod 127 increase vrin.
other bsod might be ram or cache
I test with RB 50 round, 20 round x264 v2 high and final is 1 or 2 hours OCCT high.
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post #1045 of 7219
Quote:
Originally Posted by ocvn View Post

biggrin.gif we have a same 6950x batch. I will get it next Tuesday. Do you try with ur cpu yet?
My rig is not fully complete but I did try out the CPU. I was able to validate with 4.5GHz @ 1.401v but got some cold chills and decided to drop it down to 4.4GHz @ 1.352v. Have not done anything with uncore yet, it's 1:40AM and should be sleeping because I get up at 4:30AM to go to work and shouldn't be messing with overclocking stuff smile.gif No full stability tests yet just XTU. Have you had a chance to test out your CPU yet?

Edit: Adding links.

http://valid.x86.fr/yy3q2i

http://valid.x86.fr/er96vx

Another Edit. I see you've been testing your CPU lol. Have not been reading here much, my rig conversion killed me and was rushing to get to test the CPU.
Edited by Artah - 7/5/16 at 1:45am
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post #1046 of 7219
Quote:
Originally Posted by Artah View Post

My rig is not fully complete but I did try out the CPU. I was able to validate with 4.5GHz @ 1.401v but got some cold chills and decided to drop it down to 4.4GHz @ 1.352v. Have not done anything with uncore yet, it's 1:40AM and should be sleeping because I get up at 4:30AM to go to work and shouldn't be messing with overclocking stuff smile.gif No full stability tests yet just XTU. Have you had a chance to test out your CPU yet?

Edit: Adding links.

http://valid.x86.fr/yy3q2i

http://valid.x86.fr/er96vx

1 week play with this cpu. however the x99e-ws bios has some problems so i cant verify clearly how much this cpu can oc with ram ( boot and bench aida 64, xtu mem and pi fine with 3200cas 14 cr1 but somehow after few reboot the bios freeze...)
stable so far 4.3@1.325V, 3.6 cache@1.25V and ram 3000c14 64GB cr2. pass occt 1h, x264 40 loops and realbench 2 hours H264.
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post #1047 of 7219
The voltage soak for the 6950X starts around 4.25GHz.

I ve lapped mine this night(couldnt sleep anyway biggrin.gif ).
Will post some results later
post #1048 of 7219
Quote:
Originally Posted by Baasha View Post

hey.. it's Mike biggrin.gif a whole 27 posts in almost 4 years!

what are you using to test for stability?

anyway, I tried 4.4Ghz & 4.5Ghz - it won't even boot @ 4.5Ghz and insta-crashes @ 4.4Ghz. LOL..

It's quite stable at 4.3Ghz @ 1.270V which is nice! IBT 'Very High' 10 runs - RealBench Benchmark - 5x H.264 Encode - all pass without issue. Gaming for hours @ 5K with GPUs OC'd to 2100Mhz work fantastically well.

However, it's not so stable! I just tried encoding a 4K video w/ Adobe Media Encoder and it BSODs even at 1.290V! mad.gif

Is there something else I need to change like Cache Voltage? If so, what should I set the Cache voltage to?

@Jpmboy @SilentScone

PLEASE HELP!


You're saying that its crashing at 4.3ghz at 1.29v correct? What specific error message are you getting? Watchdog? Whea_uncorrectable_error? etc..

Your cache is only at 3.1ghz so there's zero need to change that, and honestly the cache voltage does a good enough job of regulating itself for the most part. If you were running cache at 3.7-3.8ghz and 3200mhz RAM or something, i might say to manually change cache voltage and system agent perhaps. But with 2800mhz RAM and 3.1 cache you're fine.

It seems like core voltage is what you need, what kind of cooling do you have? If your cooling is adequate you can go to 1.4v without issue fairly safely. My 6800K won't get 4.4ghz till i set it at 1.35v, and won't be stable at 4.5ghz even at a massive 1.5v!!!! (which is infuriating to the extreme since my 5960X could hit 4.5ghz at 1.3v, and i could squeeze the extra 100mhz to 4.6ghz by pushing it a bit over 1.4v. No such luck on broadwell, 4.5ghz is just impossible no matter the voltage even on custom water cooling with 1,280mm of radiator space)

For 4.3ghz i would try going to ~1.32v and see how it responds. I don't think you should have to go much over 1.35v even worse case scenario considering your 4.2ghz voltages being fairly low; but it's possible depending on your cooling.
 
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post #1049 of 7219
Is there a difference between the 6850K and the E5-1650 V4? The E5-1650 V4 is a few dollars cheaper than the consumer variant. Both have 40 PCI-E lanes and such? Is the Xeon unlocked too?


http://ark.intel.com/products/92994/Intel-Xeon-Processor-E5-1650-v4-15M-Cache-3_60-GHz

http://ark.intel.com/products/94188/Intel-Core-i7-6850K-Processor-15M-Cache-up-to-3_80-GHz?q=6850k
post #1050 of 7219
My 6900K needs around 1.24~1.26V for 4.2 GHz and 1.35 V for 4.3 GHz. 4.4 GHz around 1.39 V...not fully tested yet, might need around 1.42 or so. 4200 MHz is plenty for me.

The trickiest things seems to be VCCSA voltage yet again. I am getting some weird things going on when VCCSA is not where it should be...too low or too high and USB devices dropping off sometimes or some keys if not the whole keyboard stops working when gaming. The bad thing is that never happens under stress testing. Also I think the RB crash when pressing the stop button is closely related to instability; Vcore or VCCSA.
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