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Struggle with overclocking the 6950X

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post #21 of 40 (permalink) Old 04-22-2020, 03:01 PM
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Broadwell is a pretty poor overclocker with high prices so if you intend to keep the chip I'd not go too crazy.

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post #22 of 40 (permalink) Old 04-22-2020, 11:44 PM - Thread Starter
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So over the past 8 hours of testings there was one instances when I push my memory back to XMP speed with CPU to 4Ghz and ring 32x
and having SA voltage at 0.9V would instantly give me error in OCCT

but then I put SA to stock at 0.88V, and errors would be gone.

I don't have too much experience and knowledge with 128GB ram and SA voltage but does that 0.02V of SA do that much of a difference?

From what I've read about X99 most would recommend 1V or above when popluating this platform with all 8 sticks of 16GB DDR4 and running beyond 3000Mhz
This seems very contradicting to what ASUS EdgeUp suggested and what I know about Haswell-E/Broadwell-E

didn't have too much time left after the OCCT and Prime95 runs but this seems to pass HCI 200%, although all of my previous crashes and freezes also came after various stress tests free of errors so.... :S

--

UPDATE : yea....no it still froze roughly 12 hours of uptime...

Last edited by danny9428; 04-23-2020 at 02:44 AM.
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post #23 of 40 (permalink) Old 04-23-2020, 04:15 AM
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Quote: Originally Posted by danny9428 View Post
So over the past 8 hours of testings there was one instances when I push my memory back to XMP speed with CPU to 4Ghz and ring 32x
and having SA voltage at 0.9V would instantly give me error in OCCT

but then I put SA to stock at 0.88V, and errors would be gone.

I don't have too much experience and knowledge with 128GB ram and SA voltage but does that 0.02V of SA do that much of a difference?

From what I've read about X99 most would recommend 1V or above when popluating this platform with all 8 sticks of 16GB DDR4 and running beyond 3000Mhz
This seems very contradicting to what ASUS EdgeUp suggested and what I know about Haswell-E/Broadwell-E

didn't have too much time left after the OCCT and Prime95 runs but this seems to pass HCI 200%, although all of my previous crashes and freezes also came after various stress tests free of errors so.... :S

--

UPDATE : yea....no it still froze roughly 12 hours of uptime...
Hi,
You leave system agent on auto it will likely go to 1.2v same as vccio cpu that's toast land.

Haswell-e I stay on last bios for it, broadwell-e bios just over zaps voltage too much to deal with.
But system agent on it I use offset mode 0.170 for max 1.03v usually
Vccio cpu around 1.1v
Vccin around 1.9v llc-4

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post #24 of 40 (permalink) Old 04-23-2020, 08:35 AM - Thread Starter
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welp....now it's literally going downhill

now even at stock + 2133 ddr4 it'll randomly freeze and crash

I'm completely defeated about this chip and board.
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post #25 of 40 (permalink) Old 04-25-2020, 12:21 AM
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Quote: Originally Posted by danny9428 View Post
welp....now it's literally going downhill

now even at stock + 2133 ddr4 it'll randomly freeze and crash

I'm completely defeated about this chip and board.
It could be memory incomptability. That memory was never intended to be run on X99, nor it is supported by your motherboard.

From my findings these are absolute max settings you can go on Broadwell-E as long as your temps within acceptable limit (80c or below) :-
VCORE : 1.40v
VCACHE : 1.15v
VCCIN : 1.95v @ Load-line calibration level 7
VCCIO : 1.10v
VCCSA : 1.15v (higher voltage doesn't mean more stable BTW. System agent unfortuantely is very picky)

Also most of the overclocks you are seeing online are not OCCT or Prime95 stable. These things are very hard to stabilize on Haswell-E/Broadwell-E architectures, so most people used to use Aida64, Realbench and older versions of OCCT like 4.4.1 for stability. I also have the same motherboard as you do and I find BIOS 3801 to be much more stable than 4101.

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Last edited by HeadlessKnight; 04-25-2020 at 12:24 AM.
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post #26 of 40 (permalink) Old 04-25-2020, 08:41 AM - Thread Starter
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Quote: Originally Posted by HeadlessKnight View Post
It could be memory incomptability. That memory was never intended to be run on X99, nor it is supported by your motherboard.

From my findings these are absolute max settings you can go on Broadwell-E as long as your temps within acceptable limit (80c or below) :-
VCORE : 1.40v
VCACHE : 1.15v
VCCIN : 1.95v @ Load-line calibration level 7
VCCIO : 1.10v
VCCSA : 1.15v (higher voltage doesn't mean more stable BTW. System agent unfortuantely is very picky)

Also most of the overclocks you are seeing online are not OCCT or Prime95 stable. These things are very hard to stabilize on Haswell-E/Broadwell-E architectures, so most people used to use Aida64, Realbench and older versions of OCCT like 4.4.1 for stability. I also have the same motherboard as you do and I find BIOS 3801 to be much more stable than 4101.
Thanks for your info

I do realize many have suggested one should not use OccT and P95 for stress test due to excessive power current and heat drawn when used on Haswell-E/Broadwell-E, I did relied on Aida64 back when I tried on my 5820k and generally I would test until Aida64 won't straight out give hardware error and stop and then bump Vcore by 3 notches up from there.

It's just that now that strategy I used before wasn't rewarding me at all over the course of half year on this 6950X :/


Now I've cracked open my case and reseated everything (once again), remounted the motherboard and see if that helps any...
Current uptime is 39 hours but we'll see...


Last edited by danny9428; 04-25-2020 at 08:48 AM.
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post #27 of 40 (permalink) Old 04-27-2020, 01:04 AM
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This thread kinda makes me glad I didn't upgrade my x99 with a broadwell-e CPU
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post #28 of 40 (permalink) Old 04-27-2020, 04:40 AM
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Hi,
Yeah I returned a 6950x too
Turned out it was used instead of new as advertised didn't want someone else's cull reject.
5930k is doing just fine.

Really was time to look forward and maybe 10900k for a real gaming platform

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post #29 of 40 (permalink) Old 04-27-2020, 01:32 PM
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The Broadwell-C seemed to be a great CPU, but the Broadwell-E's were just a letdown.
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post #30 of 40 (permalink) Old 04-27-2020, 10:05 PM
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Quote: Originally Posted by 8051 View Post
The Broadwell-C seemed to be a great CPU, but the Broadwell-E's were just a letdown.
I've had a lot of trouble with sporadically freezes. After a few month and finding my final OC the issues we're gone and since then the system never had an problem again.

Use compatibel RAM and use a few good Strees tests like RBA, Blender, AIDA(Cache-test), Streestestapp(RAM), HCI-Memtest(RAM).

Have a look at SA, CACHE and CPU IO Voltages and have fun with your rig for a long time.

Mine runs:
CPU: [email protected]
Cache: [email protected]
SA: 0.93V
CPU IO: 1.056V
VRIN: 1.92V LLC5 i think
RAM: [email protected] CL15/1T 100 Strap.

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